2002 audi a4 1.8 t cold start problem

Hi Lisa , you can reset by disconnecting the battery cables an holding the cable ends together for 10 min. If you have a check engine light on an there is a fault code this won't work , it will go out but will come back on . Maybe right away or after two or three drive cycles ,that's from cold start . sitting over night or eight hours sitting .

Lookfor a light on the dash that says SECURITY or ANTITHEFT. If you see this light, that is a sign of a failed or failing antitheft system, which will disable your vehicle. This link explains

http://vatspasslockpasskeysecurityhelp.yolasite.com/

If the occasional fail to start increases more often with temperature, that is outside temp or inside temp if the car is sitting in the sun, the saturday morning "cartalk" guys on NPR repeatedly say that Honda has a problem with a fuel pump relay which sits up under the dash. It goes bad and this generally happens with a hot day or a hot interior. So maybe you want to give that a shot.

Could it be that your battery is too weak to turn the starter,some batteries will drain after sitting awhile,even if it's fairly new,happen to me when I use to let my truck sit about a few weeks.But my other truck never did it,both batteries were fairly new.

most likely a air bubble in your system. get it up to temp open up your reservoir use something that will fit in the opening and put coolant into it rev engine up a bit until you see bubbles coming up. when you did the engine did you replace cooling system parts like t-stat or water pump? purging the system of air will take a little while good luck hope that helps

Hi there again

Sorry to hear you are still having problems.If you are going to change the pump I would certainly not recommend you do it yourself.If it is the V4 motor I am thinking of, you would need to get to it by removing the rear seat ,remove access panel , and pretty much play around in the gas for an hour or so to get it off in the first place.

What I did find was this on the net on a recall by Audi to replace 2002/03 model fuel pumps as noted below.

RE: 2002 Audi A4 Fuel Pump Change:


I just had my fuel pump changed out by the dealer. Here is what the letter said-

"Safety Recall JL 2003 year Audi A4 quattro with 1.8L Turbo or 3.0L engine and 2003 Model year Audi A6 with 3.0L engine"
The fuel pump on some affected vehicles may contain a carbon brush set that is susceptible to premature wear.

On invoice it says-

JL12 Install fuel delivery unit and sealing washer.
1 8E0-919-133-G Washer
1 8E0-906-087-P Fuel Pump

No charge for unit or install. Just call them up and give the vin number to see if your car is affected. On the other note of your code error '1&3 misfire',try and have it re-set (it might be an old error)and see if it comes back. Hope this helps ,and I will research your problem further with pleasure if need more help.

Hi i have 02 audi a4 slimline. on motorway going 70 mph and to past a car dropped it down to fourth gear probly hit 90mph. Drove for a further hour and a half, and hear a bang under car. car started to loose power. was drivable but hissing noise come out of it when accelerating. Feels like turbo not kicking in. Would this be that the turbo has blown of maybe burst pipe or something. If anyone can share a light on this i would be very greatful. Cheers

try speeding up engine tickover a little

hi im going to change oxygen sensor and im looking for a little information on how to fit it. a8 adui 4.2 2002