VW Passat 2.0TDI, problem, I think.

Southern Dandy

How are ye all,

So long story short my VW passat 2.0TDI sport (2008) was driving perfectly until last week. I felt what can almost be described as "Jerk" while driving was doing 100Kmh on a road with a slight incline.

I thought that I inadvertently took my foot of accelerator for a split second and put it back on and caused that jerk as it always does this, even did it in my old car. This may not be related to the issue below. \/ \/

Sooo jump forward to last night, was approaching a roundabout, not a car in sight so kept it in 3rd gear and went through it doing 55kmh and accelerating up to 65kmh (I think this is what I was doing) and then the car all of sudden begins jerking heavily for a couple of seconds, so changed to 4th gear and pushed through it and the jerking stopped .

This morning I tried replicating the exact same situation (well as close as I thought) and no problem at all. Rang my mechanic he said it could be down to how I drive it, that caused the jerking motion. So I honestly do not know, it did not happen this evening, thankfully.

The diesel I use is from a reputable Maxol garage, so I do not reckon it is dirty fuel, it was recently serviced, fuel filter was done, car has a full stamped service history. Now I know there was a factory re-call for the fuel injectors, wiring loom etc but as the car is an English import and no record on the log-book of evidence that it had been done I'm worried it is a injector issue.

So can anyone shed a bit of light on the subject, anything similar happen to ye, problems, solutions etc.....Or am I over re-acting as I only bought the car recently.

Any help greatly appreciated.

88manta

If you get the engine ECU checked with professional equipment for fault codes, it should be able to point you in the right direction.

Has your Passat got a DPF filter?

Southern Dandy

88manta wrote: »

If you get the engine ECU checked with professional equipment for fault codes, it should be able to point you in the right direction.

Has your Passat got a DPF filter?

No engine management light flashed or does that matter?, and I honestly could not tell you if a passat has one let alone mine. I'd imagine it does.

88manta

Engine management doesn't come for a lot of things these days.

Just because it didn't flash or come on doesn't mean faults aren't recorded.

I'm guessing the car is down southern side of the country

Southern Dandy

88manta wrote: »

Engine management doesn't come for a lot of things these days.

Just because it didn't flash or come on doesn't mean faults aren't recorded.

I'm guessing the car is down southern side of the country

You guessed correctly, south west to be precise.

Chimaera

Could be an iffy accelerator pedal position sensor but really you'd need a diagnostic scan to be sure.

Southern Dandy

Chimaera wrote: »

Could be an iffy accelerator pedal position sensor but really you'd need a diagnostic scan to be sure.

Cheers bud, I'll keep an eye on that, hoping it is a once off (though I have my doubts), general consensus so far is a diagnostic, but I hope someone may have an idea what the problem is or experienced something similar.

Chimaera

Having 'an idea' is rather pointless in this - the symptoms you describe could have a few causes and throwing parts at any of those until the problem goes away is an expensive waste of time. Get a proper diagnostic done and you'll be sorted in no time.

Southern Dandy

Chimaera wrote: »

Having 'an idea' is rather pointless in this - the symptoms you describe could have a few causes and throwing parts at any of those until the problem goes away is an expensive waste of time. Get a proper diagnostic done and you'll be sorted in no time.

Jesus not at all, I won't be throwing anything into it, I can be thick but not that thick , am only wondering possible causes based on people experiences. But you are right a diagnostic is the only real way for sure peace of mind.

For the time being apart from that elongated shudder the cars performance is the same as when I bought it. All I have read about injectors leads me to think that once that goes the car will either go to a limp-mode or cut out completely.

michael999999

Interesting, have the same problem intermittently I'm my 02 c5 2 litre hdi.

Southern Dandy

michael999999 wrote: »

Interesting, have the same problem intermittently I'm my 02 c5 2 litre hdi.

Hows mike, normally talking to you in the "Tralee" thread.

Just realised, vaguely remember this but didn't you say you get diesel from that maxol station not too long ago?, or was that someone else?.

michael999999

Southern Dandy wrote: »

Hows mike, normally talking to you in the "Tralee" thread.

Just realised, vaguely remember this but didn't you say you get diesel from that maxol station not too long ago?, or was that someone else?.

Ya that's where I've been getting it the last few months.

But this was an existing problem with car when I bought it privately. The seller didn't think to tell me about it.

Its not a major problem, just gives the odd jerk every now and again. I replaced the fuel filter and threw a bottle of redex in a few times aswell.

Mentioned it to my mechanic he thinks it might be the air flow meter, haven't had a chance to drop it into him.

Truckermal

Where you based I have VCDS so I can scan it for you..

Moanin

I would be calling VW UK and give them the chassis number to check and see if your car is part of the injector recall campaign.

Bejubby

possible flywheel if it does it on feathering a light throttle.

George Dalton

Moanin wrote: »

I would be calling VW UK and give them the chassis number to check and see if your car is part of the injector recall campaign.

No need to call VW UK. Just ring your local dealer.

An 08 Passat 2.0 could be the newer common rail engine in any case.

FR85

George Dalton wrote: »

No need to call VW UK. Just ring your local dealer.

An 08 Passat 2.0 could be the newer common rail engine in any case.

I think you are right George, I think they move from the PD series to the CR in 08. The PD engines had an injector recall and from reading on seatcupra . net when the injectors do go you walk home. I don't think they sit down or judder, you just lose power and come to a halt.

When I had the DPF in the Altea it used to cause a judder while doing a re-gen, I think it's this. Does your car ever idle high in traffic?

Southern Dandy

FR85 wrote: »

I think you are right George, I think they move from the PD series to the CR in 08. The PD engines had an injector recall and from reading on seatcupra . net when the injectors do go you walk home. I don't think they sit down or judder, you just lose power and come to a halt.

When I had the DPF in the Altea it used to cause a judder while doing a re-gen, I think it's this. Does your car ever idle high in traffic?

I actually forgot about this but thanks for all the help lads, I contacted VW and thankfully my car was not part of the re-call.

It is funny you say that, in the mornings the car is fairly quiet while idle after a bit of driving, when it is idle it seems to tick over a bit more loudly, once you slip it into gear and take off, alls good.

I have had no problems similar or even remotely the same symptoms as my original post. To be honest being not really used to diesel engines and it being a newer car for me every noise I now think is a problem .

Out of interest is there an early mechanical indication of when the flywheel is on the way out?.

Moanin

One indicator is: While stationery in neutral gear, rev the car and if you hear alot of 'rattling', it's on the way out. My wifes 06 2.0tdi has over 250k kms and on it's original flywheel. It's on it's last legs though.....the rattles have started.....

FR85

Again I think it might have been a DPF regen, the Altea used to do this.....when the DPF was there!!! DPF's can make a car feel and run weird while both on a motorway and in traffic.
My flywheel when it was on the way out sounded like the release bearing was going, the car still motored perfectly.
If it is the DMF don't get a single mass flywheel, a mate fitted one to an Octavia and it's a noisy rattly pig on a motorway.

strandsman

mine did something similar recently, Still don't know what it was, no fault codes showed up, it actually stalled one day, towed to garage and no faults!! it started again after.

QUOTE=Southern Dandy;86830092]How are ye all,

So long story short my VW passat 2.0TDI sport (2008) was driving perfectly until last week. I felt what can almost be described as "Jerk" while driving was doing 100Kmh on a road with a slight incline.

I thought that I inadvertently took my foot of accelerator for a split second and put it back on and caused that jerk as it always does this, even did it in my old car. This may not be related to the issue below. \/ \/

Sooo jump forward to last night, was approaching a roundabout, not a car in sight so kept it in 3rd gear and went through it doing 55kmh and accelerating up to 65kmh (I think this is what I was doing) and then the car all of sudden begins jerking heavily for a couple of seconds, so changed to 4th gear and pushed through it and the jerking stopped .

This morning I tried replicating the exact same situation (well as close as I thought) and no problem at all. Rang my mechanic he said it could be down to how I drive it, that caused the jerking motion. So I honestly do not know, it did not happen this evening, thankfully.

The diesel I use is from a reputable Maxol garage, so I do not reckon it is dirty fuel, it was recently serviced, fuel filter was done, car has a full stamped service history. Now I know there was a factory re-call for the fuel injectors, wiring loom etc but as the car is an English import and no record on the log-book of evidence that it had been done I'm worried it is a injector issue.

So can anyone shed a bit of light on the subject, anything similar happen to ye, problems, solutions etc.....Or am I over re-acting as I only bought the car recently.

Any help greatly appreciated.[/QUOTE]

Moanin

For injector recall it depends on whether or not it's the newer common rail diesel engine or the older pd engine.

George Dalton on here maybe able to help you more with this if you provide him with your engine code......

jfox21

I’ve been having what sounds very similar with my 2007 Passat, 2.0T (gas engine) Here is what’s happening:

It’s a jerking feeling. How hard it happens or easy it is to feel varies with sometimes it’s barely noticable and sometimes it’s very obvious. When it is really bad, it feels like the engine has had power cut (like no gas at all to the cylinders) and then it goes back up to full power instantly. Engine doesn’t rev, car doesn’t accelerate and RPMs don’t vary. The car just hesitates and then power kicks back in all at once (similar to how a hard tranny shift has a jerking feeling but the car is not trying to shift).

It happens only at very specific times. Only when:
It is cold (the colder the worse it is)
There is snow or road mist, including blowing snow from a ditch or off a semi flatbed (yes, had the jerking thing two days ago on a very clear day after following a semi with a flat bed covered with snow that was blowing off the trailer all over the road, and the jerking happened severely multiple times until I got past the truck)
Salty roads with no moisture (must be a lot of salt dust, as in a LOT)
Happened once after a car wash during the winter time (about 10F out) but after car was stopped, turned off, turned back on and driven a half hour (the car wash thing was only that once)

More details:
Gear doesn’t matter, but usually happens in 6th gear while not accelerating or decelerating, although the semi / flat bed occurrence the other day did allow the car to jerk while accelerating and the car was about to shift
Issue is sporadic, it’s worse when the car is driven in dry conditions first then snowy or wet, but still happens even if starting in snowy or wet conditions
Sometimes it can be quite snowy or wet and no problems, other times barely anything and it is bad
Car has 140,000 miles / 225,000 km, problem started at about 100,000 miles / 161,000 km
And no, there are no codes showing a problem. Had a deep scan done by a private mechanic who specializes in European cars and they couldn’t find a thing. And it’s so sporadic they can’t test drive it to feel the problem.
Cleaned the mass air flow sensor with CRC Mass Air Flow Sensor Cleaner


When it doesn’t happen:
Summer time, regardless of rain or dry
Winter time when it’s dry

Anyone have any ideas?