just picked up a 02 a4 1.8t with auto trans. i dont know what the CVT is, or is it all auto trans?

CEL is on and so is EPC, it idles high around 1200, is in limp mode and wont rev higher than 4k, and from a stop hesitates and suddenly jumps after a several seconds. sometimes rolls back on a hill(not mashing the pedal, slowly pressing keeping it below 1.5k). trans shifts fine once moving, no hesitation or anything of the sort. yes i have searched a bit but would like to get some definite answers if possible. scanned it already, got a p0322 and 3 others as misfire. ive read that a speed sensor will solve this problem and some threads i read coil packs are the cause. dont want to go around buying parts i dont need. i will be doing an oil/trans fluid change tomorrow and possibly the speed sensor too. also are all auto trans CVT?

 

well i actually got to take a good look in the light today. it definately is the fwd cvt crap. should i look into replacing the tcm?

 

First you should take care of the misfires and the P0322 DTC. That may just take care of the limp mode and poor shifting.
OBD2-OBDII Code P0322 AUDI - Ignition Engine Speed Input Circuit No Signal | Engine-Codes.com
CTV transmissions are not my favorite type of transmissions, but you need to get the engine to work properly before blaming the transmission or the TCM.

 

^^^^I second that! EPC and engine light could also be a MAF sensor. I had the same symptoms but had a code p0102 and the MAF took care of it. Good luck!

 

thanks for the input guys. i will try and get a speed sensor and MAF changed out today if i can find the parts

 

so i went to test out the MAF by unplugging it with the engine on, and it ran the same as it was earlier -_- i just cleaned it and will see if that makes any difference at all. if not monday ill put in a new one with the speed sensor too

 

i also tried to clean my maf a few months ago. it does the trick for around 6 months or so but then isnt any good and the problem kept coming back. i suggest to buy a new one there like 109 on ecs tuning i believe for the whole housing and everything its pita to change

 

also noticed after taking out the MAF that there is a valve?(white and gray) on top of the air box that has a hole melted in it. no clue what its for but sure its part of my problem. can someone help me identify it so i can replace it?

 

That is a bypass valve, mine was in worst shape(holes in it) just caused a vacuum leak, car drove fine though. Dont think thats ur problem.

 

Dealer said that was causing a code to come up for the brake booster, $150 replaced at Audi dealer for 5min job lol