My XJ40 Left Me Stranded Again! - This Time I Think I Found the Issue
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- čas přidán 28. 06. 2024
- My Daimler (Jaguar) XJ40 left me stranded again! This is the third time this has happened to me in the two years I've had it. Luckily I was very close to home this time. I do think I have found the issue this time.
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#xj40 #jaguar #brokedown - Auta a dopravní prostředky
"Seems to be" vs "why isn't it this" is the story of my garage efforts in the restoration of a series 3.
It’s the big questions in life haha
Hi Adam. I’ve been through this. I have a 93 model and my fuel pump relay is in the trunk near to the power antenna motor. Are you sure someone didn’t install the fuel pump relay in the wrong spot? The car should have stalled within 10 seconds after pulling the relay. The pump is easy to change. I can guide you through this but run a test light on the pump circuit first to make sure the ECM is commanding it on reliability. I changed the pump, the regulator, and the injectors only to discover that the problem was actually the ECM connector. A film of oxidation breaks the fuel pump circuit. Reseating the connection solved the problem after spending almost a thousand dollars chasing the problem.
This is a early car with the battery under the bonnet. So the configuration is different.
It's remarkable how similar the AJ6 and the old V12 sound.
Adam thanks sharing this problem with us .
XJ40 is still a cool car . Hope it is solved with the fuel pump. Greetings
Excellent advice. great show . Keep it up mike from England 🇬🇧
Maybe the pump just has a weak ground connection?
That can cause voltage drop and the pump might start to draw more amps and just not perform like it should.
Make sure your battery terminals are very clean and check/clean the electric connectors going to all fuel systems.
Posibly problem arcing blinker relay it will interfeare with ground potential .
If you have external capacitor does the same effect.
Posibly to much octane booster ore your problem is with liqueds inside your engine perhaps coolant electrolisys.
That hapens often be me gm based classic car.
Those cars have teribel wire harnest try to use resistors and diodes.
NEVER let the fuel ⛽️ drop below 1/4 full. The pump will suck up all the crap from the tank and wreck the pump / block the fuel filter.
That car is gorgeous. Hope you can get it sorted.
Seems like your XJ40 will continue to provide great video material. 😀
Hahahahah. As a fellow xj40 owner (1990) this is hilarious
That would be my favorite car because it’s a Daimler that is the top of the line for Jaguar
Could be water in your fuel tank. Especially when your at almost empty. Water being heavier than fuel, it rests upon the bottom of the tank, rusting it out - from the inside. Drain the fuel tank completely, then visually check the fuel. You need to eliminate this as a possible cause of your poorly- running engine. You have got the best Think Tank right here, online.
Hi, if you are not really sure it’s the fuelpump, I have an other suggestion. I had the same issues a few years ago with an early x300… on holiday with the whole family in Switzerland… i had the famous “Christmastree dash” (lots of lights…)… turned out to be one or more dodgy COILS…. Changed them, fixed!
Thanks again for the video
Thankfully XJ Jesse has a good video on how to replace the fuel pump on the XJ40/X300.
That’s good to know
@@LivingWithAClassic There is 2 ways to do it: The insane way, by having to disconnect the 2 fuel hoses on top of the diff and praying the fittings won't break or leak and praying the tank will actually want to go out of the car. Or, the sane way, by removing the back seat and parcel shelf and cut an access door. Then, any generic Ford pickup fuel pump and a bit of 8mm fuel hose will do the job for not too much money.
@@alexandrecouture2462 Excellent ! Thank you
@@LivingWithAClassic Video title is: Is My Fuel Pump Giving Out? (Jaguar XJ6/XJ40)
Could you please show us the proces of replacing the full tank? I’m trying to get a tank out to replace the bottom hoses and and leaking fuel drain plug in my 40.
Yes if you can get a spare ECM and or clean the contacts to test under passenger side under the dash. The pump relay should be cheap to replace. Doubt it is the pump. The fuel filter can give you low pressure if clogged up, but would give fuel code.
I wonder if the fuel pump relay is sticking? Anyway glad you got home and thanks for shooting the video.
Let me give you a tip. When connecting your fuel pressure test guage and you want to depressurise your fuel system by disconnecting the fuel pump or fuel pump relay, how long does the engine run for? About 1 or 2 seconds max. So 2 possibilities. 1. Just because the relay says 'Fuel pump' doesn't mean it is. Some relays can be interchangeable. If you are positive that its the right location then Id day its been bypassed. Maybe it failed previously and someone bypassed it (the relay). Bottom line is your car simply wont run without the relay, so sitting there waiting for it is... actually rather humourous :)
I'm not familiar with this model Jag - it's too modern for me, but I do know that fuel pump relays on later cars that use them are notorious for playing up and causing various faults. If you ever pull one apart you'll find that there's more than just a relay inside, there's a little electronic circuit too with diodes etc. (well there is on the one's that I've seen). It's certainly worth replacing the fuel pump relay before going for fuel pump replacement. The only strange thing is that normally a car won't run at all with the relay unit removed, but the fact that it does may be just a quirk of that Jag model. Normally on ignition switch on the relay receives a short signal from the ECU to energise the fuel pump for a few seconds to prime the system, then, when the engine is started, pulses from the crank sensor tell the ECU to keep the relay energised for the pump to run continuously. If you're in a crash and the engine stops rotating, obviously the pulses from the crank sensor stop, thus also causing the fuel pump to shut down and stop pumping fuel - it's a safety feature. Whether your particular car operates in the same way I wouldn't know, but I'd guess it would be very similar.
"That'll be fun" almost as dangerous as "how hard can it be?".
check all your earth/ground connections
Crankshaft position sensor ? Possible Adam . They usually play up with age with this model , and give up without warning
That’s also new. Replaced it the first time this happened
I immediately thought CPS, but I had the same problem with my '94 3.2.
Dizzy cap and HT leads.
Ran like a dream afterwards.
Would the car run that long with no relay? There's maybe a bad earth causing the pump to power from another circuit?
Well, it happened to me once in my 94 Daimler, ca 2 years ago. Was very wierd, engine stalled just 500m after car was washed in WAP. I couldnt start the engine, lots of white smoke went out of air intake (so probably was different issue than yours). After i poured some anti-water liquid into the gas tank, engine started after a while as nothing has happened. Cant explain exactly what was the issue, as i cant imagine how water could get into the tank after common wap washing. And it never happened again... So, maybe a hint that water/moisture in the tank could cause engine stall? By the way, car should be towed with rear axle up, right?
It was only a short distance and he was in neutral. No issue. But yeah, if it was a long distance, that would be the right way.
It was a short distance of maybe about 1,000 meter and we were going 5 km per hour. No issue to do it the .
Have you checked your fuel filters ? Air filter ? With my XJ40 I can’t hear the fuel pump at all.
All of that is new
It must have an inline accumulator.
No it was an electrical fault causing the pump to run at a slow speed
@@LivingWithAClassic big fault if you removed the pump relay 🤣
I'm typing this before I have finished the video, my guess is the alternator. Also I am sure you are aware but you should never let the tank get below 1/4 as this will burn out the pump quicker.
ett rejält batteri ...inga lekisbatterier från blåa butiken.....
I honestly dont know why people bother with the "40" the interior is woeful, and the instrument panel looks like the last hi fi set before the other one appalling ! and why even try to rescue one of these beasts when you can easily go and get a beautiful low mileage gorgeous series 3 from Japan all with sub 20 k mileages either 6 or 12 cylinder and you get the traditional top quality Jaguar interior instead of the awfull Ikea inspired 40 .
the fuel level could be a factor;they dont like running on empty
Yes but has done the same with a full tank and with half a tank
@@LivingWithAClassic Oh well not that then;I've had a few cars which dont like low fuel levels;back to the troubleshootin'
Hope the fuel pump replacement cures it;the in tank ones are a bother compared to the previous models