why does check engine light go off on hard acceleration and back on when u let up

why does check engine light go off on hard acceleration and back on when u let up 1 Answer

Why does check engine light come on and then truck reduces power 1 Answer

When I hit about 60 miles an hour loses power and check engine light flashes but then shuts off

Check engine light comes on when accelerating 14 Answers

In my 90 f150 when I accelerate the check engine light comes on. when I ease off the acc. the light turns off. any Ideas?

Check engine light in for months then go off for an hour then comes back on 1 Answer

My check engine light came on so I replaced the O2 sensor and the gas cap. It went off for a couple of weeks, now it's back on again. The error code says it is the O2 sensor again. I did just repl...

why carb loading and backfiring when let off throttle on my 85 f-150 300 6cyl. 1 Answer

runs good when accelerarting when letting off fuel throttle carb loads up and backfires. when idling rpm revs up and down.and starts anytime!