I have no check engine light on and no codes coming up. The mechanic replaced the ignition control module. It is still happening. Can it be the coil packs or random misfire without an error code? Any othe ideas? 1997 a4 1.8t

 

no... if it was misfiring it has to throw a code... its afederal standard and required by law.

has your battery gone dead since this has been happening...?

 

No dead battery.. I just went out and looked around... The tubes connected to the air filter housing are sputtering.. drivers side fan on...passengerside fan is off. My temp gauge never moved above quarter way but now gauge is at half except when I went on highway

 

hi guys my car is doing the same after just spending $2200 at a dealership....jerking under acceleration, but no codes thrown. Could this be bad plugs?, Just had one coil pack replaced and the others appear to be fine

 

what do you mean by sputtering...?

 

cause a vacuum leak will give the same symptoms as misfire

 

My mechanic said not plugs or coils without engine light and error code. His online troubleshoot program led him to ignition control module (ecu). That didnt work. He said he also checked for vac leaks?

 

>>sputtering meaning if u feel the tube coming in and the two after the split they are pulsating

 

is there a whooshing or sucking sound...? 1.8T i notorious for vacuum leaks...

post your VIN number so i know exactly what generation of 18.T i'm dealing w/...

 

Sometimes a whale like noise