This car idles and runs great when there is cooler weather or it is raining. When it is hot and dry it idles very bad. It ran great all winter but during 80+ degrees and dry it has very unstable idle. Why does it run good with cooler wet weather?
1990 AUDI 80
May 18, 2004
2 Replies
Bad ignition wires would be my first guess.
Jim, Sounds like the opposite - bad wires usually short out when wet. Sounds more like vapour lock in the fuel system - are all of the heat shields in place around the injector hoses? Maybe check at
formatting link
to see if Huw has a solution. Cheers! Steve Sears
1987 Audi 5kTQ
1980 Audi 5k
1962 and '64 Auto Uni> > This car idles and runs great when there is cooler weather or it is
Join the Discussion
Have something to add? Share your thoughts — no account required.
Didn't find your answer?
Ask the community — no account required