Rough idle when warm


#1

I have an 1998 Toyota Avalon with 110,000 on it. The car runs/idles great when first started, but after a few minutes the idle becomes rough and there is a hesitation/chugging when under light acceleration. Heavy acceleration is fine. The car had a full tune-up less than 5K miles ago.


#2

Let me guess a check engine light on? If so take it to shop or hopefully auto parts store to get it read for free and post back.


#3

Yes, the check engine light just came on and I went to an automotive parts store where they used their code reader. The code indicated a problem related to the EGR valve. It was suggested that I remove and clean the EGR valve and see if it fixes the problem, if not replace the valve.


#4

That is sound advice. You should also clean out the exhaust gas passages in the manifold while you have the valve out.


#5

Will do, thanks for the advice. Luckily for me the valve is easy to get at and it should only take a few minutes to remove