PDA

View Full Version : Sick 01 A4 Quattro 1.8T needs help



hcrews
02-23-2009, 08:29 PM
I have a 2001 Audi A4 Quattro 1.8L L4 Turbo (AWM) 130,000 miles which suddenly began running very badly and started showing the following codes:

SAE VAG
P1128 17536 Long Term Fuel Trim mult.,Bank1 System too Lean
P0300 16684 Random/Multiple Cylinder Misfire Detected
P0303 16687 Cylinder 3 Misfire Detected
P0304 16688 Cylinder 4 Misfire Detected

I have a very tight budget and cannot afford to take it to a shop but I can replace a sensor or electrical component but don't know which one is bad. Any ideas to narrow the problem and get the right part?

boostedup
02-23-2009, 08:36 PM
probably the MAF. first thing i'd check, if not coilpacks. but i doubt 3 of your 4 coilpacks went right away, and your 01 so no ICM.

You can try and clean it, but that doesn't always work....

dakine86
02-23-2009, 08:39 PM
probably the MAF. first thing i'd check, if not coilpacks.

i had the p1128 tech related it to either MAF or 02S.. however later developments shown problems with the evap canister.. as for the tight budget man good luck.. bicycles may be on sale soon.[headbang][:(]

sorry about your car for sure man.. goodluck hope all is well soon.

Poopie
02-23-2009, 08:51 PM
i'm going with maf

hcrews
02-23-2009, 08:53 PM
Any recommendations on the best place to buy parts?

FACT
02-23-2009, 09:49 PM
I had a really similar problem with my 01 1.8TQM. First reading said 3 misfires, a random multiple misfire, and a cyl. lean fuel code. After having all these cleared. I drove for awhile, had it rescanned, and it read only a cyl. 2 misfire. After troubleshooting the possibilities (unplugging MAF, replacing cyl. 2 coil, and changing all spark plugs), the problem still persisted and I kept getting a cyl. 2 misfire. After having a shop check it out this weekend, they said it was the cyl 2 injector. You might have the same problem.

beejohn
02-23-2009, 10:23 PM
I have a 2001 Audi A4 Quattro 1.8L L4 Turbo (AWM) 130,000 miles which suddenly began running very badly and started showing the following codes:

SAE VAG
P1128 17536 Long Term Fuel Trim mult.,Bank1 System too Lean
P0300 16684 Random/Multiple Cylinder Misfire Detected
P0303 16687 Cylinder 3 Misfire Detected
P0304 16688 Cylinder 4 Misfire Detected

I have a very tight budget and cannot afford to take it to a shop but I can replace a sensor or electrical component but don't know which one is bad. Any ideas to narrow the problem and get the right part?

1. When was the last time you changed your spark plugs?
2. Look at the coil-pack harnesses, everything look ok? Coil-packs on the 01s are known issues. It is rare that you had 2 cylinders's coil-packs go, but still possible.
3. You can log your MAF with vag-com to see if those readings are within spec causing the lean condition. this will tell you if the MAF is bad.
4. It could be your primary o2?
5. when is the last time you changed your timing belt?

Seerlah
02-24-2009, 02:48 AM
This issue does not need to have a mechanic fix it. You can fix it for maybe $135 tops yourself (and that is just the price of the MAF or 02 sensor). And I also think it is your MAF. What you can first do is unplug the MAF to see if the ignition coils misfire. It is under the stock airbox. There will be a rubber groument and you simply lift that up. There will be a clip right under it that is attached to the MAF element. Unclip it. If the misfires stop, then it is def your MAF.

turbo kraut
02-24-2009, 07:44 AM
if it is a maf, get it from the vw dealer, same part, half the price


if you have someone in your area, swap in theirs and see if that fixes it.... might also swap around the coils to see if that is an issue....... like stated, might change your plugs just for sng's

hcrews
02-24-2009, 07:52 AM
- New spark plugs last year
- timing belt changed at 60,000 so approx. 70 k ago (Needs to be done asap)

hcrews
02-24-2009, 08:33 PM
Problem Solved.

I was fortunate enough to have a local shop that sells and services lots of Audis and loves them (Donahoo Auto). I went by and ask their service manager if he would give me a free opinion since I really couldn't afford to pay anyone else to fix it and I didn't want to waste what little money I had putting in the wrong parts. I showed him the codes and he told me Coil Packs. I asked about the MAF and O2 sensor and Ignition Module (all recommendations from forum guys), but he said he was pretty sure Coils would fix it and recommended replacing all 4. He told me where I could find them locally for a good price at O'Reilly's only $26.95 ea.

I got the Coil Packs and some new plugs, put them in and it runs great.

Thanks for all the helpful advice guys. I know everyone was really trying to help. I'm sure the MAF will eventually act up and it seems like that is a problem all too often with these cars as they age.

Thanks again.

pipe7284
02-25-2009, 06:03 AM
Your welcome!