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Car starts fine idles a bit rough accelerates to about 30 then wants to cut out

(1990 Oldsmobile Cutlass Ciera)
in Amanda, OH on November 06, 2014
will hardly pull itself up a grade more than 30mph .had same problem this spring , replaced tps and mafs no help, new plugs n wires , checked fuel pres. ok replaced coil module that seem to fix it,. for a few months now doing the same thing, had new module checked . it checked good . also new oxy sensor last spring. im stuck on this one might have to take it to a real mechanic .this car shows no codes.
Displaying 3 answers & 1 comments
Popular Answer
on November 06, 2014
A 'real' sanner with live data needs to be connected and viewed by a real mechanic while vehicle is being driven...fuel pressure test guage can also be connected for this drive!!! .... OR you can just keep on guessing at it!!!!!
on November 06, 2014
Try estimator at top of page.
on November 06, 2014
I would start looning toward a fuel pump issue test the fuel pressure at the rail also possibel bad gas, i had a grand am do this got water in fuel, pressue tested fine but bad fuel flow, i replaced the pump and also the plugs ran great after that it. U might wanna check your fuel qaulity
on November 09, 2014
checked fuel pressure , checked ok ,even on a pull, pressure stayed about steady , car cut out at 30 wouldn't accelerate any faster. installed new fuel pump and strainer , waste of money still cuts out at 30 and will not go any faster. think it is coilignition module , but had it checked , they say it is ok . could the computer be bad ? about the only thing I havn't tried.
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