Question about 1989 Oldsmobile Cutlass Supreme

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Car lacks power

My 89 cutllass has hesitation at start and while driving at low speed. it has alot of unburned fuel. i recently had code 44and 45. i have replaced all sensors, fuel pump,fuel filter,injectors flushed,no clogged cat,used coil packs and module,new plugs and wires,new egr valve,no vacuum leaks,air filter. i don't know what to do next. car smells with alot of gas and black smoke at start up.i need help and i will do as told. i do undestand the parts i replaced might be defective. i would appreciate for help. thank you.

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Try a compersion test

Posted on Apr 28, 2013

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I realise you mentioned that you have no vacuum leaks , but have you checked the intak manifold gaskets for vacuum leak?
if so check your distributor cap for any sign of cracks
also have you had or checked your timing?
check your fuel vapor canniste to ensure it is working properly
Are the spark plugs gapped properly?
also check to se if your rotor in the distributor is good or not

Posted on Oct 11, 2008

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