Old style PCV valves would draw very little air from the crankcase while under the intense vacuum of an idle condition. However for some reason VW designed their PCV diaphragm to be both vunerable to tears and fairly strong. When you take the oil fill cap off while the car is running, cars with a tear in the diaphragm will fall flat on their face from the unmetered air. It makes sense that the intense vacuum of a bad PCV will damage seals from the inside.
I replaced low fuel pump,high fuel pump and the sensor that goes on it,fuel filter, fuel pressure sensor, pcv valve, hose that connects to the high fuel pump, fixed vacuum leaks no more smoke coming out of any hose or anything, MAF sensor, Air fuel ration o2 sensor, EVAP purge valve, gas cap, oil dip stick and my long term fuel trim is around 25 and short term fuel trim is around 0 I don’t know what to do next 07 Audi A4 2.0T FSI
I had the same problems with a 09 Vw scirocco 2.0 tsi fuel pressure sensor and fuel trim bank 1 mil on, rough idle, low power everything was ok after I changed the crack seal (141k miles)
I have a 2011 VW Tiguan misfires idle lean fuel pressure pressure all diagnostic change the spark plugs change the coils change the manifold change that round piece on top of your talkie near the crank case it’s still misfiring now when I started it does it like backfire it it almost dies every morning I hit the gas a little to check engine light flashes I hit the gas and the check engine light stays on it runs pretty good doesn’t die but it knocks and I have high octane gas I haven’t change the fuel injectors yet I bought the car at 100,000 miles I’ve only put 2000 miles on it I take it back to the mechanic who sold it he keeps telling me I’m gonna make it right and he’s been a mechanic for 40 years he said the shop in Santa Monica California he’s not making a right up and back 20×20 times thanks for your knowledge hope you can read my writing
Hello I have the same trouble codes on my 2009 Volkswagen Tiguan it was leaking oil but not from the rear main seal fixed leak and the codes keep coming back
Hey how are you man! I’m getting same code I have replaced PCV valve back in December and on Monday my car turned off when I was driving and now the car it turns on and it shakes like crazy on the left side between engine and transmission? amazing video dude very helpful to identify causes of the issue. Where are you located I’m in need of a good mechanic as yourself
2013 Cc 2.0t got codes P2187 and P119A other day EPC light turned on and rough idle I also hear a slight knocking while idling and varies while revving
Question... I got a 2010 VW CC Sport it's a 2.0 Tsi Turbo. Now iv had it 3 1/2 yrs now. Absolutely no issues very strong very quick car. Amazing lil turbo engine but.... Thanksgiving morning around 5:30ish am my wife goes to start it up n get the car warm n I hear her yell something is wrong... N I go over n hear it Missing.. which at midnight it wasn't missing when we got home from Walmart. But 5am it was.. so I went ahead ran the OBD2 scanner it said misfire in all cylinders basically it didn't say anything bout lean or rich ect just all cylinders was misfiring gave me the P0303 P0302 ect. So I went ahead n dropped the R8 coils "Red tops" in and new iridium plugs. Figured that would do the trick... N it helped massively but... It didn't wanna start for a second which is bad.. considering it's never done that before.. n it started n was missing again n stuttering n being hesitant on acceleration. So I cleared the old codes and rescanned it.. and it said cylinder 3 misfire.. that's all... So I rechecked #3 everything seemed fine n connected right but still it was missing.. n it keeps saying #3 misfire the epc came on n engine light came on flashing.. now since it's got all brand new iridium plugs and red top ignition coils what else can cause #3 to misfire ?? It just happened all at once it was running absolutely fine until Thanksgiving morning... Do you think the pcv could be the reason??? Or is their anything linked directly to #3 causing it to misfire?
I was going to look at a 2009 VW Passat 2.0T with 102k miles for 4600 would you recommend? Any suggestions besides the timing chain and PCV check? I really like this car so hopefully it’s a good deal 😊
I’m at 122k now on my mk6 and I’m stage 2. I don’t know why the engine light is on it randomly came on the other day in the afternoon after I drive home 10 min from where I meet my carpool? Haven’t noticed anything wierd
Ive got a p0171 error on mine, I was told I had a leak in my Intercooler and Radiator which I replaced (£££!) and the problem continued, I've since changed the PCV and breather hoses and still having the same problem! Have done a smoke test and cannot see anything obvious... If I press the gas the revs will go up but on the way down 'stick' at 2k for a second, drop a bit hold then drop back to normal. The car will also increase revs on its on sometimes at idle... I'm totally confused, I'm about to replace the DV but at the end of my wits! I'm only part way the video but some great insight so far.
Check for vacuum leaks. If you have a 06 gti or an FSI engine like I do check by where your high pressure fuel pump is. Check the vacuum lines around there. There are some that are plastic and brittle. My car only has 100,000 on it and two hoses under the high pressure fuel pump we’re cracked. Replace those and see what happens. I had the same issue you did and that fixed it for me. I am still throwing a lean code though. That will get figured out soon.
@@tylerbradley9013 Thanks for the reply, and suggestion mate. Ive done this and smoke tested, deffo no leaks. Total mystery. Finally got a decent scanner so going to check the O2 sensors as someone has said this could be a cause.
NEED SOME HELP.... cleaning the exterior firewall I came on a part just behind the ECU unit - it appears a mouse had eaten through some wires that had been attached to a sensor or relay to something. it is blocked by ECU and panel under the wiper arms. need to remove them.To get to it. BUT can't figure what it is. what it runs . - two problems I have is --- washer sprayer doesn't work and passenger side mirror won't fold in. WHAT THE HELL IS THIS THING. ANY HELP -- this is a 2002 v-6 glx passat - auto trans - 4 motion.
I was going to look at a 2009 VW Passat 2.0T with 102k miles for 4600 would you recommend? Any suggestions besides the timing chain and PCV check? I really like this car so hopefully it’s a good deal 😊
Can this leak between transmission and engine can call a problem with no fuel pressure when is hot engine and no start until is cooling down ? I replaced :fuel pressure sensor High fuel pressure pump Low fuel pressure pump and module Injectors What I didn’t fix is the oil leak between transmission and engine
On my Volkswagen Jetta 2015 with the TSI motor when I'm driving down the road the air conditioner blows cold air but when I come to a stop and start blowing hot air
@@kevinrobles7768 turn on the car and then turn on the ac pop the hood and make sure the fans are coming on if not unplug them run a couple of wires to the fan connecto from the battery to see if they turn on if the do then you have a bad fan control module i had the same issue before as soon as i replace the module problem solve
My friend has a 2009 VW GTI 2.0 TSI engine. It just threw codes P0171 and P0507. There is no vacuum at the dip stick, oil filler cap or at the small hole on the diaphragm housing. When I remove the oil cap I get air coming out. Could this still be a bad PCV?
I was going to look at a 2009 VW Passat 2.0T with 102k miles for 4600 would you recommend? Any suggestions besides the timing chain and PCV check? I really like this car so hopefully it’s a good deal 😊
what a piece of garbage vw are. 400 000 kms Toyota Yaris 2009 ONLY problem 3 batteries because of idiot me left lights on . what a great car toyota has been , at least for me
Old style PCV valves would draw very little air from the crankcase while under the intense vacuum of an idle condition. However for some reason VW designed their PCV diaphragm to be both vunerable to tears and fairly strong. When you take the oil fill cap off while the car is running, cars with a tear in the diaphragm will fall flat on their face from the unmetered air. It makes sense that the intense vacuum of a bad PCV will damage seals from the inside.
Great video. I have similar problem, all 4 cylinders misfire and short fuel trim at 25.
I replaced low fuel pump,high fuel pump and the sensor that goes on it,fuel filter, fuel pressure sensor, pcv valve, hose that connects to the high fuel pump, fixed vacuum leaks no more smoke coming out of any hose or anything, MAF sensor, Air fuel ration o2 sensor, EVAP purge valve, gas cap, oil dip stick and my long term fuel trim is around 25 and short term fuel trim is around 0 I don’t know what to do next 07 Audi A4 2.0T FSI
I had the same problems with a 09 Vw scirocco 2.0 tsi fuel pressure sensor and fuel trim bank 1 mil on, rough idle, low power everything was ok after I changed the crack seal (141k miles)
Hey what did you change I have the exact same car and same problem
I have a 2011 VW Tiguan misfires idle lean fuel pressure pressure all diagnostic change the spark plugs change the coils change the manifold change that round piece on top of your talkie near the crank case it’s still misfiring now when I started it does it like backfire it it almost dies every morning I hit the gas a little to check engine light flashes I hit the gas and the check engine light stays on it runs pretty good doesn’t die but it knocks and I have high octane gas I haven’t change the fuel injectors yet I bought the car at 100,000 miles I’ve only put 2000 miles on it I take it back to the mechanic who sold it he keeps telling me I’m gonna make it right and he’s been a mechanic for 40 years he said the shop in Santa Monica California he’s not making a right up and back 20×20 times thanks for your knowledge hope you can read my writing
Maybe a timing belt was replaced and miss-timed.
Hello I have the same trouble codes on my 2009 Volkswagen Tiguan it was leaking oil but not from the rear main seal fixed leak and the codes keep coming back
Hey how are you man! I’m getting same code I have replaced PCV valve back in December and on Monday my car turned off when I was driving and now the car it turns on and it shakes like crazy on the left side between engine and transmission? amazing video dude very helpful to identify causes of the issue. Where are you located I’m in need of a good mechanic as yourself
2013 Cc 2.0t got codes P2187 and P119A other day EPC light turned on and rough idle I also hear a slight knocking while idling and varies while revving
Tks. Very good info.
How much did all that cost...? Also, great info. Thanks for taking tha time to enlighten us
Question... I got a 2010 VW CC Sport it's a 2.0 Tsi Turbo. Now iv had it 3 1/2 yrs now. Absolutely no issues very strong very quick car. Amazing lil turbo engine but.... Thanksgiving morning around 5:30ish am my wife goes to start it up n get the car warm n I hear her yell something is wrong... N I go over n hear it Missing.. which at midnight it wasn't missing when we got home from Walmart. But 5am it was.. so I went ahead ran the OBD2 scanner it said misfire in all cylinders basically it didn't say anything bout lean or rich ect just all cylinders was misfiring gave me the P0303 P0302 ect. So I went ahead n dropped the R8 coils "Red tops" in and new iridium plugs. Figured that would do the trick... N it helped massively but... It didn't wanna start for a second which is bad.. considering it's never done that before.. n it started n was missing again n stuttering n being hesitant on acceleration. So I cleared the old codes and rescanned it.. and it said cylinder 3 misfire.. that's all... So I rechecked #3 everything seemed fine n connected right but still it was missing.. n it keeps saying #3 misfire the epc came on n engine light came on flashing.. now since it's got all brand new iridium plugs and red top ignition coils what else can cause #3 to misfire ?? It just happened all at once it was running absolutely fine until Thanksgiving morning... Do you think the pcv could be the reason??? Or is their anything linked directly to #3 causing it to misfire?
Injectors?
Decent extremely helpful
I was going to look at a 2009 VW Passat 2.0T with 102k miles for 4600 would you recommend? Any suggestions besides the timing chain and PCV check? I really like this car so hopefully it’s a good deal 😊
Anyone have any idea what may be going on when an 07 Passat 2.0T FSI has the p0171 system lean and p0299 turbo underboost codes?
I'm trying to understand how main seal failure can cause lean burn. 👀
Great video thank you so much dependable auto
I’m at 122k now on my mk6 and I’m stage 2. I don’t know why the engine light is on it randomly came on the other day in the afternoon after I drive home 10 min from where I meet my carpool? Haven’t noticed anything wierd
I have a golf 6 GTI when the car gets to operating temperature it stall and won't start until it's cooled down any suggestions please I have a p2293
Ive got a p0171 error on mine, I was told I had a leak in my Intercooler and Radiator which I replaced (£££!) and the problem continued, I've since changed the PCV and breather hoses and still having the same problem! Have done a smoke test and cannot see anything obvious... If I press the gas the revs will go up but on the way down 'stick' at 2k for a second, drop a bit hold then drop back to normal. The car will also increase revs on its on sometimes at idle... I'm totally confused, I'm about to replace the DV but at the end of my wits! I'm only part way the video but some great insight so far.
Check for vacuum leaks. If you have a 06 gti or an FSI engine like I do check by where your high pressure fuel pump is. Check the vacuum lines around there. There are some that are plastic and brittle. My car only has 100,000 on it and two hoses under the high pressure fuel pump we’re cracked. Replace those and see what happens. I had the same issue you did and that fixed it for me. I am still throwing a lean code though. That will get figured out soon.
@@tylerbradley9013 Thanks for the reply, and suggestion mate. Ive done this and smoke tested, deffo no leaks. Total mystery. Finally got a decent scanner so going to check the O2 sensors as someone has said this could be a cause.
@@chavvyboy69 Hey man did you find what causes this problem? I have the same issue and I think it's because of fuel pressure sensor
NEED SOME HELP.... cleaning the exterior firewall I came on a part just behind the ECU unit - it appears a mouse had eaten through some wires that had been attached to a sensor or relay to something. it is blocked by ECU and panel under the wiper arms. need to remove them.To get to it. BUT can't figure what it is. what it runs . - two problems I have is --- washer sprayer doesn't work and passenger side mirror won't fold in. WHAT THE HELL IS THIS THING. ANY HELP -- this is a 2002 v-6 glx passat - auto trans - 4 motion.
Hey seriously nice video and thanks alot!!!! Highly appreciated
04 beetle. My check engine light is on. I got codes P2181, P2187, P0300, P0301, P0302, P0303.
Very good info, thanks for sharing.
Your very welcome!
that's what they told me at vw i'm getting the same codes broken crank seal no power oil leaking cc 2009 140K Km's
Good video
👍great video
I have FSI with 130k and a p0171
I’ve replaced everything beside the rear main seal..
do you think this is my problem? My trim is about 25%
I got an 06 2.5 it has fuel coming out of the valve start But A no start ,But with starting fluid yes
oh thanks
My car is leaking too but is not staying at all, only cranking, what do you think it is?
Just had a 2009 Passat roll in with same codes-looked below: oil dripping from rear seal. Only 129K miles.
Same here , did you fix your seal?
Is rough in idle?
@@desmond8234 No, customer decided to sell car. Replacement of seal and PCV assembly corrects leak and poor running of engine.
I was going to look at a 2009 VW Passat 2.0T with 102k miles for 4600 would you recommend? Any suggestions besides the timing chain and PCV check? I really like this car so hopefully it’s a good deal 😊
What about fsi?
Can this leak between transmission and engine can call a problem with no fuel pressure when is hot engine and no start until is cooling down ?
I replaced :fuel pressure sensor
High fuel pressure pump
Low fuel pressure pump and module
Injectors
What I didn’t fix is the oil leak between transmission and engine
And I got the same codes p119A and p0171
That’s the rear main seal. That will cause the problem and the reason for the video lol this is exactly what is wrong with your car
Can the rear main seal cause the monitor catalyst to fail ?
On my Volkswagen Jetta 2015 with the TSI motor when I'm driving down the road the air conditioner blows cold air but when I come to a stop and start blowing hot air
AC condenser fan is probably not coming on.
@@FlatRateMechanic how do I fix that
@@kevinrobles7768 turn on the car and then turn on the ac pop the hood and make sure the fans are coming on if not unplug them run a couple of wires to the fan connecto from the battery to see if they turn on if the do then you have a bad fan control module i had the same issue before as soon as i replace the module problem solve
Its the compressor control valve 100% sure.
JESUS, what the hell is the car doing and how do you fix it and sometime this week if you could get to it!
you really should be using mvb 32 for fuel trim
Where's the link for the smoke machine?....
My friend has a 2009 VW GTI 2.0 TSI engine. It just threw codes P0171 and P0507. There is no vacuum at the dip stick, oil filler cap or at the small hole on the diaphragm housing. When I remove the oil cap I get air coming out.
Could this still be a bad PCV?
I was going to look at a 2009 VW Passat 2.0T with 102k miles for 4600 would you recommend? Any suggestions besides the timing chain and PCV check? I really like this car so hopefully it’s a good deal 😊
Omg just get to the point and show how to do it we’ve all done what you said in beginning about code
If you own one of these. I highly recommend to throw it on the garbage
Bro u aint never lying
what a piece of garbage vw are. 400 000 kms Toyota Yaris 2009 ONLY problem 3 batteries because of idiot me left lights on . what a great car toyota has been , at least for me
Sound like you smoked it
Почему не на русском языке.
Because he is an english speaker