95gtsdcon89

I am having problems with my 95 gts. i just bought it but it seems to have a lot of problems. I checked the check engine light but i dont know to do wht the information. I get readings of lean and rich in boath banks and primary fuel pump circuit maulfunction. I have replaced 02 sensors, cap and rotor, spark plugs, fuel pump and fuel filter. the car some times runs strong and some times has no top end power. I have looked at the maf sensor and it is clean. i have no clue what to try next.

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whats the problem

5.0 85 GT

you may need a new computer..ecm...or the cats may be clogged up if you have the stock catted h pipe..look into a offorad h or x or a catted one..a new catted one will only have 2 cats..u can still get more power out and pass emissions as well..but the rich lean thing should have been fixed by new 02 sensors...but idk..

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1994 mustang Gt, Cobra intake,Offroad H,cam,loud flowmaster cat back, BBK Cai and chip,70MM Prof. Products TB, 97 Cobra rims, Cobra Clone in process