So, I'm hoping there is an Audi/VW technician or someone with experience with them on here.
My mom has a 2007 VW Passat with the 2.0 Turbo and the auto trans. It's got around 80,000 miles and has had all listed services done. The CEL stays on. It's currently indicating a misfire. It has been at our local dealer many times, and to a GOOD independent mechanic as well. It's also had tons of other CEL related visits, both in warranty and out. She gets it home from the dealer with the CEL off and it's not a week before it's back on with something.
We're running out of patience with the car. Are there ANY known issues with these related to kicking a misfire code? They've moved the coil packs around and know which one it is, but there is ZERO evidence it is actually misfiring. No buildup on the plug, runs smooth etc. It's costing us a fortune to keep putting this in the shop.
I know you can't diagnose a car over the internet, BUT surely there are some ideas & advice.
Thanks!
JM
dopey question but, have they tried just replacing the coil pack that seems to have the issue?
If moving it around moves the problem to the new location than what else could it be besides that coil pack?
I hate VW with passion because it's full of electrical problems. My computer stopped working And now shows all error codes in dash. Have heard many similar stories for 2000-2002 models. I wonder if the problems still plague later models like yours?
It certainly seems to.
The coil pack is just the newest issue. I think they are going to replace it, BUT the mechanic that has it is a *real* mechanic that investigates deeper than the number on the computer. Often numerous things can trip a certain code.
ab - it certainly seems there is something going on. This car is in the shop with the CEL on several times a year.
JM
they're cheap and easy to do yourself
The early 2.0T had a ton of bad coil packs, the '06 GTI I had went thru a bunch
My guess is that is all it is.
http://www.partshaus.com/ignition-coil-pack-06h905115a.html (http://www.partshaus.com/ignition-coil-pack-06h905115a.html)
or
http://parts.vw.com/parts/2007/VOLKSWAGEN/PASSAT/2.0T/?siteid=217479&vehicleid=1433379§ion=ELECTRICAL&group=IGNITION%20SYSTEM&subgroup=IGNITION%20SYSTEM&component=IGNITION%20COIL (http://parts.vw.com/parts/2007/VOLKSWAGEN/PASSAT/2.0T/?siteid=217479&vehicleid=1433379§ion=ELECTRICAL&group=IGNITION%20SYSTEM&subgroup=IGNITION%20SYSTEM&component=IGNITION%20COIL)
I work at a VW dealer...coil packs even from the dealer are cheap...I reccomend getting them from the dealer as apposed to some other sources due to getting the latest and greatest incarnation being available there instead of potentially leftover old potentially bad stock that was switched from a different vendor for a reason...I can go on on this but it is pointless...and I can go on about some of ab's issues as well, but also pointless....
there are some common issues on the BPY engine code 2.0T's...nothing huge or catastrophic and most of it is pretty much external and easy to address...some of it may or may not be causal, but all is solvable without issue....we have seen misfires from people putting bad or different grade than normal or wrong grade of gas in....we have seen things from people having an independant shop putting in the wrong weight of oil or non-synthetic oil and running it past a reasonable time cycle for changing....we have seen numerous things...the key is...isolating the cause and addressing it and that is just a lil hard to do without deeper amounts of information to cover the total picture that an internet conversation may not be able to address...and quite frankly it is something that should be with those that are or have been servicing the vehicle or with all paperwork detailing all servicing with a 3rd party...the car itself by design and drivetrain overall are worthy of ownership longterm, and we have a few customers in excess of 150K who are just keeping on driving the ever loving piss out of the cars....
Thanks Zoom! Every oil change (on time or early) & required service has been done at the local dealer. Unless the local gas stations are fudging on grade, it's always had 93.
I am planning on going through her paperwork from the dealer. The independent mechanic has only seen the car two times for the most recent issues. We would get it back from the dealer and within two weeks (sometimes a couple days) the light was back on. Zooom, PM me anything helpful if there is more than what you've already posted. We'll get the coil pack changed. Should ALL of them be changed?
JM
In addition to what Zoom said I would like to add a couple of things. One is if the misfire code changes to a different cylinder if you swap coils you have a bad coil. Good procedure is to change all four. Easy DIY task. Save the old good coils as spares. Misfire codes can be read with a cheap aftermarket scan tool. Just like Ducatis, 93 may not be the best grade for5 your Passat if the computer has not been flashed. I ran both my 1.8s 87. No ping, slightly better fuel mileage. How do I know there was no ping? No knock sensor activity and better fuel mileage.
VW's biggest problem in the US is not the product. It is bad dealers (Zoom's not included) and a lack of support from independent repair shops. See if there is a good independent in your area.
I agree on the dealers issue. The closest dealer only reads the code and starts replacing anything affected until they find the faulty part.
The manual says 93, so should we be running a different grade?
JM
Quote from: the_Journeyman on July 14, 2012, 08:18:26 PM
I agree on the dealers issue. The closest dealer only reads the code and starts replacing anything affected until they find the faulty part.
The manual says 93, so should we be running a different grade?
JM
Like I said, both my 1.8s ran fine, no, actually better on 87, no knock sensor activity. Your 2.0, besides the increase in displacement has a different head so your results may be different. You will not hurt the engine with lower octane gas since it is knock sensor protected. Timing will be retarded with an expected reduction in performance and fuel economy. If you can find someone with a scan tool capable of fully reading your VW you can see knock sensor activity. The manuals on my VWs, if I remember correctly, stated premium or, like our Ducs, 95 RON.
Wish I lived near you, I'd read the codes for you.
A guy I work with was getting a run around from his Audi dealer about a CEL.
I plugged in, created a report of of all the times and dates his O2 sensor triggered a code. He printed it out and went back and their attitude changed and they fixed it.
I've got the Rosstech cable. For $300 I feel it's been well worth it.
I did get yelled at when I got my car inspected last year because I had it set so the fog lights could stay on with the high beams. idk, I saw it could be set like that so I tried it. Didn't know they frowned upon that. [laugh]
Here's the link to Rosstech
http://www.ross-tech.com/ (http://www.ross-tech.com/)
Great tool, you can use it while driving with a second person driving from the passenger seat, makes trouble shooting easy.
*warning* this will allow you to alter just about everything, however somethings once altered cannot be un-altered (speed limiter comes to mind). So do not change anything until you are absolutely sure that's what you want to do. Keep a note book and jot down the factory numbers so you go back to them.
Those scanners are a great idea! Not a bad price for what they are. What all can you change with them aside from reading the codes?
JM
Quote from: the_Journeyman on July 15, 2012, 10:05:28 AM
Those scanners are a great idea! Not a bad price for what they are. What all can you change with them aside from reading the codes?
JM
potentially too much.
Depending on the model, you can do nice little tricks like make the gauges sweep on startup, add oil temperature to the display etc etc.
I use it when I change the fuel filter on my TDI to run the electric pumps a few times afterward to purge air and make certain I don't run the big pump dry.
Quote from: the_Journeyman on July 15, 2012, 10:05:28 AM
Those scanners are a great idea! Not a bad price for what they are. What all can you change with them aside from reading the codes?
JM
Just about everything. Be very very careful.
The independent shop that has the car now is going to replace the coils. Hopefully that'll fix it for good.
JM