Motor idle fluctuates up and down about 100 rpms on cold start. Can't duplicate problem when engine is warm. Could this be lift pump letting go?? Currently have about 60,000 miles on it. Haven't had any problems since new till the past week or two.

 

Probably just your heating grid cycling on and off.. I think that the book says it COULD last for up to 3 minutes

 

Check your batteries.

If they are nearing the end of their usefull life, the extra juice from the grid heaters is pulling them down enough effect fuel delivery.


phox

 

I would also like to know. I know what the grid heaters act like ,mine just kind of lopes. FP is fine