Having problems with your 1996 GMC Jimmy ?
See below After having replaced the transmission ( and prior to), RPMs are revving without touching the accelerator. Help!
There are a few different causes that would give you that symptom. A worn Throttle position sensor (tps) would cause erratic revving, and also a stuck throttle cable/body as well. Take a quick look at the throttle body and move it by hand to watch the cable action, this will quickly tell you if it is the problem. The kickdown cable may be stuck too. The tps can be check with a voltmeter to see if it is within spec and adjusted accordingly. \015\012\015\012Any of these problems would be any easy/cheap fix for a mechanic if you cannot do it yourself. If everything checks out, then you may have a bad ECU.
Repair Help & Product Troubleshooting for 1996 GMC Jimmy
Tips for a great answer:- Provide details, support with references or personal experience .
- If you need clarification, ask it in the comment box .
- It's 100% free, no registration required.