Open loop rpm stumble
07-22-2009, 09:11 PM
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Open loop rpm stumble This is for a '93 vette. On start up, the car has trouble keeping an idle and doesn't have much throttle response. When it go's into closed loop, its fine. The stumble is so bad in open loop, you cant drive it. It has to warm up first.
I'm getting good fuel pressure and have replaced the tps, map, and air temp sensors. No dice. Does anybody have any suggestions? Thanks.
I'm getting good fuel pressure and have replaced the tps, map, and air temp sensors. No dice. Does anybody have any suggestions? Thanks.
