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Check Engine light, bucking at low rpm's...?

334 Views 7 Replies 5 Participants Last post by  T.J.
Iys a 91 coupe, and the check engine light comes on sometimes, and now and then the car will start "bucking" on me at low rpms in first and second gears. Any ideas to what might cause this? Fuel issue? Any help is appreciated!
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You have given WAY too much info here.



Stock cam?
need to know what the code is and what were working with. bucking is usually caused by a lean condition
Car is all stock other than exhaust and cobra intake. The guy I recently bought it from told me to clean the egr and maf and see if that fixes it.
Could be anything really. A broken spark plug or burnt plug wire will cause the same thing. Could be fuel, as mentioned. Could be a dying coil. It has to do with cylinder misfire in high load situations...
Well I can drive the car around for and hour, and the problem wont even happen. It seems like when I shut it off and start it again is when the check engine light comes on. And the bucking problem doesnt even always happen, even when the check engine light is on. Just spiratically.
That is where I would start, but it will help alot if you can just pull the codes.

Car is all stock other than exhaust and cobra intake. The guy I recently bought it from told me to clean the egr and maf and see if that fixes it.
Might be a dumb question, but how do I go about pulling the codes? I've been driving a C5 vette for the last 3 years, so I'm kinda outa the mustang knowledge
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