I have a 2008 S5 4.2 in the shop witch im having issues figuring out.
Every single time you start the car it idles like crap ... Missfires ( CEL flashing sometimes, sometimes not ) runs really rough ... The customer even said he saw the EPC light come on ( I havent ) ... Sometyimes the CEL comes on sometimes not
Heres the deal ... I dont have any significant codes in the ECU memory
The second you clear the codes ... the car runs like a charm ... The customer bought a cheap code reader off ebay and he literally has to turn the key ON .. clear the codes ... every single time he wants to drive the car or else the cars feels like its running on 4 out of 8 cylinders
The only hint i have so far is this ... If i start the car without clearing the codes .. the car is running like crap ... the maf readings are 10+g/sec as opposed to ~4g/sec when the car is running normaly
Also the cars starts up are runs relatively well with the MAF disconnected ... ESP, parking brake, etc light come on but you DO NOT have to clear the codes to get the car to run
I dont have a spare maf handy to test ... and the new maf is non returnable
Any inputs would be really appreciated
P.S: I will post autoscan in a few minutes
Every single time you start the car it idles like crap ... Missfires ( CEL flashing sometimes, sometimes not ) runs really rough ... The customer even said he saw the EPC light come on ( I havent ) ... Sometyimes the CEL comes on sometimes not
Heres the deal ... I dont have any significant codes in the ECU memory
The second you clear the codes ... the car runs like a charm ... The customer bought a cheap code reader off ebay and he literally has to turn the key ON .. clear the codes ... every single time he wants to drive the car or else the cars feels like its running on 4 out of 8 cylinders
The only hint i have so far is this ... If i start the car without clearing the codes .. the car is running like crap ... the maf readings are 10+g/sec as opposed to ~4g/sec when the car is running normaly
Also the cars starts up are runs relatively well with the MAF disconnected ... ESP, parking brake, etc light come on but you DO NOT have to clear the codes to get the car to run
I dont have a spare maf handy to test ... and the new maf is non returnable
Any inputs would be really appreciated
P.S: I will post autoscan in a few minutes