When pressing the accelerator down hard for passing gear the engine boggs down and often will die completely. Could it be a faulty ECMU?
SOURCE: 1992 jeep wrangler with faulty acceleration. It
It is possibly the O2 sensor. I had some issues with early 90's 4.0 liters where the O2 sensor would stick rich under heavy acceleration and would cause it to lean out and bog down. It felt like a rochester four barrel flat spot on an old chevy. I hope this helps.
SOURCE: sensor problems on transmission, and engine boggs ...
my sierra started to slip out off gear but if i turn it off and on it would work normaly till it slips again
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