CAR RUNS ROUGH THEN RIDES NORMALLY AFTER I DRIVE FOR A WHILE.

2002 Volkswagen GTI

Tiny

msmccorkle

September, 1, 2011 AT 12:56 AM

When I first start my car in the morning, I have a rough idle and a rough ride for a while and then the car lugs for a minute and then drives normal. There seems to be a rattling sound coming from near the Catalytic Converter or the exhaust tip. There is no funky sounds coming from the engine. I know that cleaning the Mass Airflow Sensor, replacing the air filter, checking the fuel pump and checking the catalytic converter are some options but doing all of them takes some time. Is there an easy diagnosis for this problem?

FOUND 4487 RELATED QUESTIONS

Running Rough

27 ANSWERS
34 IMAGES

Idles Rough/changed Ects

37 ANSWERS
3 IMAGES

3 Answers

Tiny

rasmataz

September, 1, 2011 AT 1:23 AM

Check the exhaust for excessive backpressure -catalytic converter could be clogged-up

Tiny

msmccorkle

September, 1, 2011 AT 1:32 AM

How do I test the exhaust for excessive backpressure? And if that is the cause of the problem, would that give me my power back and help stop the roughness of the ride and idle?

Tiny

rasmataz

September, 1, 2011 AT 3:34 PM

Remove the oxygen sensor and hook on a pressure gauge or have an emssion station check it with a 5 gas analyzer

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