1994 s10 surging in closed loop.
#1
1994 s10 surging in closed loop.
replaced O2 sensor. had spider rebuilt. new muffler and cat. runs great until it goes to closed loop. then surges when accelerating, and when in park and reving it to about 1500 rpm, you can here it change tone as the rpm is rolling. please help. I've been fighting this for a long time. thank you very much.
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