I have a 99 A4 avant. 1.8t AEB engine. The car starts but will not stay running. I bought a new maf on ebay and it does the same thing. Im not sure where to go from here. It is not throwing any codes with vag-com. Even if I put my foot on the gas it still will just chug for a couple seconds then die.

However if I unplug the MAF the car will idle. Is there anyway to check MAF with vagcom. Maybe i bought a bad one? Or could it be something else?

Any suggestions would be appreciated.

 

I am totally stumped on this I really need some help. I can afford to drive my truck 80miles a day back and forth to school.

 

will the car stay on if you repeatedly tap the gas pedal?

 

I can keep it running for about 10 seconds if I keep taping the gas but starts to back fiire and runs terrible. after about 10 secs it just dies.

 

sounds similar to what was happening to mine, I was able to keep it running as long as I tapped the gas and a cel came up eventually. my problem ended up being both the maf and throttle body. I don't know any details on testing/resetting the throttle body with vag com but you can do some things with it. maybe it just needs to be cleaned like mine

 

Thanks for the suggestion, I will try to clean the TB and see what happens\

 

exactly what my car is doing. Gonna change my MAF and hope that fixes it. I had a P0102 code though. From the searching i've done everyone says check for vaccum leaks and check your wiring also changing the MAF but since you did that i would try the other 2.

 

I have a maf for sale for your car. Pm me if you want it.

 

Make SURE you do a good TBA with vag com after cleaning your TB

http://www.ross-tech.com/vag-com/cars/throttlebody.html

Also check your lower measuring blocks in Vag com to make sure all of your sensors are reading accurately.