RPMs jump up randomly
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Joined: Nov 2004
Posts: 2,491
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From: Franklin Lakes, NJ
RPMs jump up randomly i originally posted this in the PCM section but i figured it would be better off in here cause i got no bites, my issue is as follows:
my dilemna begins with a cam install. i am yet to get the car dyno tuned (everyone around here is packed) so i sent my computer to TSP for a mail order tune. the car drives fine except for the car likes to randomly rev up to about 3-4k. sometimes even when i'm in gear the car will accelerate on it's own. it eventually settles down to idle but at times it takes quite a while to do that. i drove the car before the tune and it did the same thing. so i decided to check the throttle body, everything is normal. the car can be revving somehow even with the blade closed (which i don't understand how) and i also changed the throttle position sensor for good measure. i feel like the new tps helped a bit, but not much. therefore i concluded that it must be computer related. anyone have any ideas or had this happen to them after a cam install? thanks
Jacob
my dilemna begins with a cam install. i am yet to get the car dyno tuned (everyone around here is packed) so i sent my computer to TSP for a mail order tune. the car drives fine except for the car likes to randomly rev up to about 3-4k. sometimes even when i'm in gear the car will accelerate on it's own. it eventually settles down to idle but at times it takes quite a while to do that. i drove the car before the tune and it did the same thing. so i decided to check the throttle body, everything is normal. the car can be revving somehow even with the blade closed (which i don't understand how) and i also changed the throttle position sensor for good measure. i feel like the new tps helped a bit, but not much. therefore i concluded that it must be computer related. anyone have any ideas or had this happen to them after a cam install? thanks
Jacob
