700r4 surging in overdrive HELP!!
04-08-2008, 04:47 AM
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Car: 1986 Iroc z
Engine: 350 tpi
Transmission: 700r4
Axle/Gears: 3.73
700r4 surging in overdrive HELP!!
i have a 86 iroc. with a 700r4 350 TPI vette motor. at cruising speed the car surges. but if give it a little gas to go faster it stops doing that. not sure if its an engine problem or trans problem. heck it could be a bad sensor on the motor for all i know. i need help with determining the problem. is there a vacumm line or something that controls the overdrive?? its almost like the trans is slipping. also when im sitting at a light. its seems like the car wants to take off with my foot on the brake. idle is set to where it needs to be as well. thanks
Last edited by 1986iroc350; 04-08-2008 at 04:54 AM. Reason: added more info
04-09-2008, 09:36 AM
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Car: 1987 IROC-Z
Engine: 350 TPI
Transmission: 700R Auto
Re: 700r4 surging in overdrive HELP!!
I had this happen with one of my other cars and it was the idle control sensor...
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