Some background, the vehicle is a 1987 325E in relatively stock format with 208k well maintained miles. I picked up the vehicle from the previous owner back in January and he said it had had some issues with idling in the past, he swapped out a few different computers into it, gave me 3 extra ones with the car in the parts box, haven't touched any, haven't needed them.
Anyways this issue is very very occasional, it's happened 5 times within 3,000 miles.
Upon starting the car it will slowly rev till around 3k once, once it hits 3.2k or so it will drop to 1k revs and hunt to 1.2k then back 1k and back to 1.2k without any throttle input at all. This issue has only happened on warm starts, after running the car on the freeway for example, doing an errand then starting it again. The first two times it was in wet/rainy weather so I thought it had to do with moisture, but the past 3 times it's been completely dry out. Leading me to post here.
To resolve the issue I would turn the car off let it sit for about five minutes and it would start and idle normally and perfectly.
Has anyone had this issue before? What could this be?
Thanks
Anyways this issue is very very occasional, it's happened 5 times within 3,000 miles.
Upon starting the car it will slowly rev till around 3k once, once it hits 3.2k or so it will drop to 1k revs and hunt to 1.2k then back 1k and back to 1.2k without any throttle input at all. This issue has only happened on warm starts, after running the car on the freeway for example, doing an errand then starting it again. The first two times it was in wet/rainy weather so I thought it had to do with moisture, but the past 3 times it's been completely dry out. Leading me to post here.
To resolve the issue I would turn the car off let it sit for about five minutes and it would start and idle normally and perfectly.
Has anyone had this issue before? What could this be?
Thanks
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