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Idles high after being in gear.
Hello, So I have a 1989 c3500 7.4L with a 3sp th400. It has 116k on it. It is set up as a wedge ramp single car hauler I use for personal vehicles. I am having a very unusual problem. It starts in park and idles perfect at 750rpm. If I go into gear it idles down to around 625rpm and then...- BigRedOne
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- Replies: 159
- Forum: Engine Performance + Maintenance
