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Vauxhall/Opel Astra J radiator fan not working... or is working? Fault finding and repair.
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- čas přidán 29. 02. 2020
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Hi
This car came to me after had an engine replacement due to a bad head gasket...
The complaint was that the radiator fan was not kicking in when the coolant reached the 90°C...
But, what was actually wrong, was something completely different...
Follow me on this video to find out what was the problem and how to resolve it.
Hope you enjoy the video.
Any questions or comments put them below.
Like always, thank you for watching!
With coolant added and under pressure an engine coolant system can be 120 plus before it boils. It's usually radiator caps on Vauxhall's that cause bother, seen loads faulty. They leak and don't let the coolant pressurise then the temp for the fan to come on isn't reached. I've seen Vauxhall's that are set to 114 degrees. Dash's show running temp at 90 because that's how it's always been and would frighten most people to see it over 100. With the new bottle the system is under pressure it changes the temp. Always fit new cap with a head gasket fault.
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Thank you for watching and for your comment!
The coolant system should be pressurized all the time. Being pressurized, will not allow cooland to boil at 100 degrees Celsius and the engine wil run more efficient with high temperature. Grate video, like always!
Spot on!
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Great video, you are not being petty. If you have certain standards you expect the same. Show you are proud of your work and do not like cutting corners.
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Thanks!
For watching and for your comment!
thanks for the vid - the top pipe on the expansion tank burst off mine recently (Astra J) - this helped me understand more about the system in general
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@@LMAutoRepairs new clip on the pipe and 5 ltrs of coolant later, she's purring away. Hopefully no long term damage done
Ayayay! What hacks! Raising the pressure is what raises the boiling point because otherwise our vehicles would be boiling at 212F or 100C....
Excellent fix. Glad you saw it to the end! 😊
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Thanks!
The sensor on the bottle is to say the level of coolant if gets low. Does not read any temperature from that sensor. Just level. 😉
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The temperature gauges on modern cars aren't really accurate and are just there to assure the driver that the engine is within normal operating temperature they actually have a really large buffer range, on VAG cars for instance when it's bang on at 90º the actual temperature can be anywhere between 75ºC to 115ºC.
Indeed...
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Never knew that thank you
This is what I got my suspicions from I came from several older cars 80s and early 90s, then suddenly jumped into 2010s, I know modern temperature gauges don't so warm up the same and are suspiciously rock steady whether you're in on a cold day or weather in a hot day in traffic
@@jusb1066 ya a bit silly how they do it really
This is true! But this does not seem right to me.
Temp sensor on bottle is not a temp senor, its to tell you a warning when the coolant level is low.
I followed your idea basically I had a leaking you can’t even see but then I had watermark all over the engine then I found out what is the leaking radiator hose on the right hand side of the engine fixed it now the fan comes on every 10 minutes when the engine is hot thank you for your idea
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Makes me wonder if someone cut the expansion tank deliberately to either ruin the engine or use that to sell them a replacement (oh look water is coming out your head gasket is gone) 🙄 there are so many idiots out there anything is possible. I think the sensor in the bottom of the tank is probably to signal that it's run dry as opposed to temperature. Super video though, another great fix 👍🏻
I think you are correct...
Too many sensors... you get confused to what's what...lol
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I really enjoyed this video, very good commentary throughout and diagnostics. Steve.
Thanks Steve!
For watching and for your comment!
Hi, the problem with opel engine's is they will purge with a bolt in the top left of the radiator, and it warm up to 105°c to activate the fun
When a problem of cooling circuit like your case you have a cylindre had broblem, be careful.
As always got to the roots of the problem 👍
I do my best...😊
Thank you for watching and for your comment!
Great fix mate... very similar to the Meriva I had while back I had the same thing with desired temp sometimes being 90° and 105° 👍👍👍 cheers
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Vauxhall... what do you expect?😜
Thank you for watching and for your comment Igor!
Louis, the sensor in the bottle is a water LEVEL sensor not a temp sensor
Yes... I realized that today before release the video...🤦♂️
Too many sensors, you get confused with what's what...lol
Thanks!
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i think if you looked at the dial the temp would show about 110 right when the fan kicked in then would go back to 90 and fan would shut off. Happens on mine, same car. Currently have problem where the fan did not shut off after cooling the temp, not sure if you've come across that. Working since but haven't been stuck in traffic as I was that day. Relay? Coolant bottle looks low, no leaks around right side, but maybe water pump.
No, ver came across that...
Could indeed be a sticky relay...
Is the temp dropping as you say, is it showing on live data?
You might have more than one sensor...
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I think rhat sensor on the botle is coolant level sensor. Great video mate👍
Correct.
Thank you for watching and for your comment!
Thank you for another great video!!!
And excelent comment section!
Thank you!
For watching and for your comment!
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Hi, I have astra 1.4t.I want to update the desired etc 90.It stock desired etc 105.How I update to 90.
didn't the first engine blow its head gasket why engine was replaced ? over headed ?
Pass... I don't have that information...
Thank you for watching!
ive never seen that as a repair....maybe they did that previously for the old engine that had excesive pressure due to the headgasket failure
Possibly...
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Thank you for watching!
I had similar case - Insignia, 1.8 petrol, costumer came in to me with fan problem. Fan was running all the time, no temp readings on dash. Obviously I checked for fault codes and it was one - temp sensor open circuit. Before he came in to me, car had head gasket done and before he had done it, everything was ok with fan. When I started to look on temp sensor, I was in shock - somebody cut out a piece of wire with plug to temp sensor!!! I suggested to costumer to come back to previous guy to repair it. After few days he came back to me and said that previous "mechanic" said that he isn't car electrician and he won't do it!!! Finally I fixed it, sent costumer to scrap yard to buy piece of wire with plug, soldered it on and it was fine. I don't understand why people doing stupid things like these ones. Even if he broke plug when he was lifting head for gasket replacement, why he cut out wire?? So stupid...
BTW another great video shoving how bad some "mechanics" are "skilled"
Yes... agree, some people are just careless... having no pride for their work...
Thank you for watching and for your comment!
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I've had similar issues with an Astra J 1.6. Bought it with a cracked header tank, replaced it, then the temperature sensor played up with a broken wire. Sorted that out, then the water pump seal started leaking. Sorted that out, then the radiator hoses started leaking. Sorted them, then the thermostat heater (yes, the ECU opens the stat up with a heater) went. That's the connector in your video on the thermostat that isn't the temperature sensor. So far so good, the fans seem to be working on full speed, but I've not yet seen low or mid speed. Will have a session commanding them on using the lo/mid/hi relay connectors in the fuse box.
On top of that this car has cam timing issues. That's another of your videos. You could have made a whole series of videos with this one car.
I hate Astras now, they are too cheaply made. Too many computer modules. On a luxury car that's fine, but on a cheap car the computers and the sensors are cheap and fail all the time.
I still have to investigate why the seat heaters aren't working, why the OBD port reads 1v lower than battery voltage, sort numerous earth and wiring problems and find out where the seam in the roof is leaking and seal it. This car is so bad it should go Woof!
You have been busy...
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@@LMAutoRepairs Yes, the usual thing on cooling systems: fix one weak point and then the next weakest fails. But this car has a whole host of problems. Some caused by bad mechanics, others just by age or being sat for a while. The wiring issues are a combination of cheap thin wires breaking and water ingress from poor sealing of the roof seals.
Indeed, seen a few messed up by poor work done on them...
What a bodge,I bet that wrecked original engine.
My astra doesn't have gauge so I wouldn't have know,again great work keep it coming 😁
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I just wonder if the cut was made in the tank to make the customer think the head gasket was gone so he stumped up for a replacement engine? Maybe the mechanic makes a living swapping engines around in Vauxhalls for no reason.
Both temperature sensors work almost uniformly. This not normal. It is necessary to study the graphs of temperature growth over time. Suspicion of a bad thermostat.
Amazing case study, Thanks for sharing Bro👍
Thanks!
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A good repair video 👍
Thank you!
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good video ........... very informative
Thanks!
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Really enjoy your videos.
No one goes to the lengths you do.
Shouldn't this car have a two speed fan at the very least, instead off waiting till it hits 108C plus before starting the fan?
On a hot day stuck in traffic I'd think the car would be running hot to the point where everything under the engine would be overheated.
Unfortunately no...
It is all to do with emissions etc...
This cars run like this... at least in the UK market...
Perhaps somewhere else in the world they have slightly different strategies... not sure...
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Great video. Can someone tell me why anyone would cut their coolant reservoir bottle???
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Thank you for watching and for your comment!
Thank you for the video.👍
Thanks!
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Hi I been thincking i have an overheathing issue !!!
Tried to replace the thermostat but is same!!
Really.shocking to discover this engine are boiling up water and oressurizing the system.
I had a peugeot 308 wich never put this much pressure and boiling the water!!!
Thanks for this video!!
Really helpfully
☺️
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Wow !!! that’s shocking, cowboys, that’s the trouble with half the garages these days they call there self mechanics but they haven’t got a clue, it’s bad really how the industry is because anybody can setup a garage and call there self a mechanic without any qualifications,
Good video and top man 👍
Also true...
And I also don't have any qualifications...😬😔
But I try to do my best and understand how things work before attempt to fix them...
Thank you for watching and for your comment!
LM Auto Repairs I hope My last comment didn’t come across as a dig towards you. your work and knowledge is outstanding and put “so called professionals” to shame
@@Litesnip2022
No... not at all... 👍
I was just saying it...that's all!
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I pulled the ect sensor connector and fan kicks on high car idle. I pull the rad sensor connector and fan does nothing car idle. The car rad sensor gets to 106 and the diagnostic shows the relay 1 open but fan do not kick. Then relay 2 open at 110 ect sensor and fan runs at low speed. I test the fan relays with diagnostic and fan 1 relay do not open when activated fan nor working, but fan 2 relay do and is low speed. I swap relays and both relays are working. i am little stumped. The coolant reservoir starts pushing coolant at 110 out the overflow. relay 1 is my issue i think. i must find a wire diagram i guess
Looks like you have an issue with the control side of that relay 1...
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I bet the coolant cap came apart and the bottom part got stuck inside the coolant tank. They damaged the tank removing the stuck half of the cap. Seen it before on fords and Vauxhall's
Looked like a very precise cut... but you never know...🤷♂️
Thank you for watching!
I had a similar problem on opel corsa,but corsa have not have antifreez in the cooling system and water starts to boil at 100C and was boiling before the fan kick in,so i put mixture of 50/50 antifreeze and was fine.I think that desired temp is to high,the 90~95 is a stndard for most cars,anyway very nice video
Thanks!
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What you think is not in line with the engineering of the ecu software on opel.
liviu2004 that was only my opinion,coolant temp above boilng point is not good for engine head gasket and engine health generally
cro_ 82 most of the cars fans kick in at 105, seen mini cooper 112.5 degree kick in!!! Almost all of them above 100!!
armando nika Maybe,but not the cars Im working last 15 years
Super film i praca. Pozdrawiam
Thanks!👍👍👍
Hey Louie, look at that sexy E60 in the back 😀👍
Nice !
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Thanks!
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Do you know where can I get desired ECT, current ECT and Radiator Coolant temperature values using Vauxcom? And is there a way to program desired ECT to a lower temperature using vauxcom? Thanks
Not sure on vaxcom, where the live data is for that, just search through the options...
As for change the desired temp, very doubt that vauxcom will do it...
Thank you for watching and for your comment!
@@LMAutoRepairs Thanks for you answer. Any idea where could be the problem with the following case: I've got pretty similar engine (Z16XEP) on my Astra H with 1 fan only, but for some reason the fan is not starting even at the 115 cesium while car is not moving and the AC is off? If I switch AC on then the fan starts and keeps around 90 cesium which is fine.
@@dankolov916 Did you solve your problem, Sir?
@@dankolov916you solve the problem I have exactly the same.
In fact, a problem of the same sort happened with me 3 weeks ago when a 2008 Nissan Altima with 3.5L came to me with the check engine light is on and cooling fans not working even when the car gets overheated. I scanned the car & I found a code for the ECTs, I checked wires (5V ref & Ground) the circuit was intact from the ECM to the ECTs, everything was good. I decided to buy new ECTs because when I plug the connector into the ECTs the car starts stumbling and it shuts off straight away and when you restart the car with (foot on pedal) it keeps running until it reached boiling temperature while the cooling fan is shut off. even with the new ECTs nothing's changed, I left the car and the next morning I checked the Live Data I found that the ECTs was reading (-40) celsius even when the connector is unplugged!. When I keep the connector plugged the car won't start unless I unplug it then the car would start with cooling fans at high speed. That problem really freaked me out and I couldn't find a path to solve the problem. Then the customer took the car back to another workshop who found that the cooling fan Relay was not working properly they replaced the relay, the problem was solved!
A relay really?!!
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That's interesting...
Really interesting...
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Thanks for watching and sharing that!
Very strange! The relay has nothing to do with it.
@@engeneer_ru5827 I know that a relay would never do this, but that's what happened.
@@LMAutoRepairs I appreciate your efforts to share with us these valuable information. Love from Iraq!!
@@husseinolivia2548
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Great video, thank you.
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Hi. Very helpful video.
Thanks.
But actually the AC was not working.... I mean the fan doesn't start when u press the Ac button.
Did you manage to fix this problem also? Thanks
For the fan to come in when you turn on the AC, you need to have the AC system working properly... certain faults like low refrigerant pressure, will prevent the system from engaging...
In this case, I was not asked to look at the AC system... but if you look at the live data when I scroll through, you can see the issue...
😉
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@@LMAutoRepairs thanks.
I m asking because i have the same problem on a zafira tourer c 1.4T 2015.
And i m out of options.... I ve done the ac sistem check and refill but still doesn't wanna blow cold air in the cabin... And fan still doesn't wanna start when u press Ac on.
Cheers
What is you system pressure?
Any faults on the modules?
And most important : Don´t sabel your expansion Tank :) The Cooling System needs the Pressure !
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Correct!
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the radiator temperature and the ECT had to be on the desired value . And these people who so called work on cars every day , they might be but they are …… and doing it wrong . They should get some schooling in difference between water and cooling fluid and it's use and about the reason why a cooling system is being pressurised . You made a clear point why some people should never touch a car
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Thanks!
I really hate cowboy mechanics- cutting expansion tank like that!! That’s why I’ve always done my own car maintenance.
Thanks!
For watching and for your comment!
16:04 I've seen this before I've also seen people drill holes into the bottle they don't realise these cars run at a very hot temperature lots of people just put water in their cars and it boils and they think it's overheating but it's not what some even kick in at 108 and 110 degrees depending on the model of your car I personally think it's ridiculous but that's just way they set them people don't realise the system and don't know and understand what they are dealing with and they try and budget like this utter ridiculous
Thanks Leon!
For watching and for your comment!
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I noticed that radiator temp and ECT seemed to be going up at a similar rate from cold (possible thermostat issue as well)
The fans look to be running off radiator temp, modern temperature and oil gauges not much better
than a light . car manufacturers do that so gauges dial indicators dont move up and down a lot.
Thanks for the video, what do you think was the reason they made that cut (what were they trying to achieve/change)? Thanks
Probably someone trying to hide an overheating issue, maybe to sell the car on quick?
I bought a car once that was overcooling , but also losing coollant. Checked the thermostat and it wasnt there ! Put a new one in and the car was overheating. Took it to a mechanic and it turned it there was a small crack in the cylinder head. The previous owner obviously knew this and tried to bodge it and pass the problem on to me.
This cars due to running hot, the system get really pressurized... perhaps they thought it was something wrong, and did it to release the pressure...🤷♂️
If he had previous engine with blowing head gasket he cuts expansion bottle to relieve gasses that gets in coolant. They create such high pressure to burst hoses or force coolant through vent.
GM motors like them to run really hot 🥵 for emissions.
Thanks!
I have the same problem with my 2011 vauxhall inisgina can any1 help
Good job
Thank you!
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You've proven my theory about modern temperature guages, and I feel ok that my car doesn't have a temperature, just a warning light, .. those gauges just to show you a fault not the real information
Correct!
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Be as it may, I rather have a gauge that tells me progressively if the engine is starting to get too hot then a sudden light that turns on when the engine is already overheating.
@@t0nito that's just it if you looked at the gauge doesn't tell you progressively, it shows the solid 90 even when the fan came on. It only after officially shows three things cold normal and too late
@@jusb1066 yes but when it starts climbing upward of 90º you know it is *starting* to overheat when you have a warning light and it turns on I believe it means it's already overheated.
@@t0nito you've missed the point it doesn't climb, it's showed 90 when it was 108 with fan. It's not a temperature gauge anymore it's literally a malfunction status as a light bulb
hi, ihave a problem starting my astra diesel 1.7 cdti ,i changed the the rad pack all three did not touch any electrics now it will not start turn over but no start
Double check everything you touched...
Connections etc...
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@@LMAutoRepairs i have checked everything all water pipes ok intercooler times 2 a/c times 2 fan , should i put my old fan on ?
@@LMAutoRepairs
@@austinburns-ve2wc
Scan the car... see what is the ecu complaining about...
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I have my opel astra, high radiator fan when starts and still ON,when engine TURNED OFF. What could be the problem, sir?
Scan the car, check live data and go from there...
Thank you for watching!
Were did you get 5 volt reference to jump back to ecu. Thanks
By shorting the pins in the connector. That wire is just a loop.
Surely whoever changed the engine would have seen the tank was knackered when they filled the coolant up after the engine swap.
Why did the backyard scam mechanic ruin a perfectly good car how did he think it's wise to cut the tank . Do you think he did it so it would blow a gasket or short out something else in the engine bay and the customer would have to come back to him again should have went to you in the first place
Hope not...😬
Thank you for watching and for your comment!
@@LMAutoRepairs thank you
that Astra J Engine Code is Z16XER
Probably...
Thank you for watching!
Or A16XER 😁
WTF why would they saw the coolant Reservoir? I've never seen that ever O_O
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Go figure...
Thank you for watching!
what is the model of your Autel scanner please, thanks
MS908P
Thanks!
From one techician to another, what where they thinking to cut the radiator expansion tank?? Good man!! after replacing the radiator expansion tank, now know that your job was done100%
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Just one small correction...
I am not a technician... I am just a guy that likes to fix things...
😉
Thank you for watching and for your comment!
Hey, I have an Opel Insignia 2015 B20. MY radiator fan is not working, I have changed the temperature sensor and the thermostat. But it is still not working. Could you help me out? Is there a radiator relay, do you know the location for this. I googled but it shows for Insignia A and not B cars.
You will just going to carry on changing parts, if you don't stop and diagnose it correctly...
Give it a scan, and check live data...
You can try to actuate the fan, if it runs, then you issue will not be the fan system...
Hope that helps...
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@@LMAutoRepairs Hey thank you for the information. I have tried to start the fan manually and it works fine. I have cleaned the radiator too and put in a new thermostat. Does the thermostat sensor have any connection with the fan? or the temperature sensor? Do you reside in Ireland or UK? I do not have a scan to check live data. Do you know where I can get that checked? Thanks again. (The isn't any codes coming up, I tried to check with a code checker device from amazon. The engine does not over heat and the fan does not work, but I get a message on my dashboard saying to switch engine off after driving 5-10 kms)
OK... so, if actuating the fan with the tool, the fan works, clearly there is nothing wrong with it...
When you say the fan does not run/works, under which circumstances are you expecting it to do so, and it doesn't?
@@LMAutoRepairs When I start the engine, and the car is running. The radiation fan does not turn on. After few minutes of driving, I get a message on my dashboard, to switch the car engine off. The engine overheats and basically the water is not circulating. I am expecting the radiator to turn on when I start the engine. It is a diesel car, there is no coolant leak either or head cylinder leak. Engine is running fine, no trouble with starting the car either. It is just the radiator fan that is not working. So not sure what the issue is :(
OK... I had a quick look at diagrams... the fan is controlled directly by the engine ecu, by activating a relay in the engine compartment... there is about 5 relays on that system, but again, if when you activate the fan, it runs, then I wouldn't blame that side as the issue...
To be fair, the fan shouldn't activate just by driving a few minutes... again, you need to check live data, and see what readings are reaching the ecu...
A bad water pump can also be considered... if the water is not circulating, it will or can give you similar symptoms...
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Vauxhall coolant bottles split all the time and piss coolant all over the abs module directly below it
This did not exactly split... but I know what you mean...😉
Thank you for watching and for your comment!
@@LMAutoRepairs aye they crack at the bottom, wasnt your case here just for info
@@davesterl
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Check fan relay
What?🤔
31:00 you mean expansion tank coolant level low sensor?
Yep, but I guess this is ECU version doesn't take any notice, it would have found some kind of error or had a data PID
@@jusb1066 Not necessarily. Is that going to ECU or BCM friend? Have you checked the wiring or we just post for fun?
On the astra h the sensor on the tank is for the check control system. You need to active it in the infotainment screen with op-com but you also need to washer level sensor installed otherwise it wil always show your out of washer liquid.
Zedalonus World this is not astra h.
No but it's in the same place and it was an option when new so stands to reason it's the same fuction
Another case of Bogging. Car gets bought by used car dealer he only employs cheap labour. Tells the cheap labour to just get the car running to sell on quick with little or no money to be sent, chances are neither the booger or dealer knows what they are doing. That where the bogging starts. No thoughts for the poor punter that buys the shed.
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Couldn't you have used opcom?
Yes I could have...
Thank you for watching!
@@LMAutoRepairs it's just that most people have opcom so would find the videos more useful 👍
@@inked5145
I have many using OP-com...
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@@LMAutoRepairs yes your videos using opcom and carprog are brilliant (so are your other videos).
Keep up the good work 👍
@@inked5145
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Hiw many fans are in this car? My mechanic recons 2
Have you watched the video?
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Yeah only one you show my mechanic recons thers one in frint if the radiator aswell?? I think theres only one. Mine is not coming on.
@@themod7181
Only one indeed....
Thanks mate this just proves my mechanic dient know as much as he thinks. I used to hear my fan running when i got out of the car. I havnt heard it come on once since he worked on it changed coolent etc. Im gonna have to get it on diagnosis. Thank you.
@@themod7181
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i think that someone new what he was doing when he cut the overflow bottle.there are mean guys out there
Won't surprise me...
But hope not...🤞
Thank you for watching and for your comment!
Why don't you just put in the description of what was wrong and what did you do? Video goes for 36 minutes. Still no clue what your results was.
Hi
So, you watched the whole video, without skipping, and you still don't know what was wrong in this case?
Why do I need to put it on the description if it is all in the video?
Thank you for watching!
wow i cant understand why someone thinks thats a good idea
Me neither...
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Reservoir em vez de bottle k é garrafa. Abx.
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Thanks for the correction!
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They must have been close to another new head gasket. Muppets
Very close...🤞
Thank you for watching and for your comment!
Cowboys fit an engine this happens rrrrrrrr
Thanks for watching and for your comment!
1st dedication ;)
Beating Leon... well done!
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Slaging other mechanics is not very professional as well when yourself don’t look confident at what you say.
You say everything is fine but your thermostat is naked
I might not be too confident, but I learn and do things properly... I don't bodge things pretending I know what I am doing... as most of the repairs I do, I don't know what the problem is, I investigated, learn how things work so I then understand how to fix them...
Nothing wrong with the thermostat by the way...
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