90Lxstanger

My car is being very strange lately. I had the Map sensor replaced 2 weeks ago. Was runngin good, and now thisltely it has started acting up, and choking out, running rough, surging. It does this about half the time it runs, When i take off from a start it does it like every time i shift, give its a little throttle and it starts its crap, half throttle or more, and its ok-sometimes. When im stopped(like in the country) ill sit there and try to hold it ssteady while its doing this, and its being blowing black smoke(runnin rich?) out the ***. So im thining its gotta be one the the sensors, possibly the map sensor still.Im planning on pulling the upper intake and putting on new vaccum lines this weekend( 2 of them are pretty dry rotted looking-1 of them being the map sensor line)-
Any ideas? i know this is hard to understand- planngin one getting a video tomorrow hopefully, thanks

90Lxstanger

bump...

90Lxstanger

Well this might be hard to believe, but my exhaust pipe was touching the frame rail, so i tightened up the connection after the x-pipe and got it away from it and the problem is gone.
Was it grounded or undgrounding the engine or what? i assuming it was doin this to the whole electrical system......

thunderjet429

exhaust leak fooling the o2 sensor?????

90Lxstanger

Huh?
No, what fixed my problem was the tail ofthe exhaust pipe resting on the frame, and when it'd rattle the car would cut out and ****, and now thats i moved it away its comlpetely fine... weird as hell but thats what it was