Question about 1999 Oldsmobile Bravada

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Engine starts but it run rough - 1999 Oldsmobile Bravada

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  • sniffnburly Aug 15, 2008

    Mine also runs rough, it seems to missfire intermittenly,also at around 45 mph it seems to be worse, I bought a coil to swap out with the others so far nothing i'm currently checking the plug wires for any breaks and next will be the spark plugs themselves, after that i'm stuck.maybe it could be an injector. unfortunately i'm not that good with electronics. So if this comes of any help or if you have resolved the problem let me know.

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Do a pressure test on the fuel pump. if that tests ok then check your sensors. is it shooting a code (service engine light)? Oxygen sensor at back of cat. converter, crank shaft sensor or throttle position sensor. Unfortunately sensors are hard to trace. These are the suggestions I recd. for my bravada. it idles great but dies about every 1000 feet or so while driving. cut it off and re-crank and go another 1000-2000 ft. and do it again, will start running rough until you kill the ignition and restart the truck. pretty sure mine is a weak fuel pump.

Posted on Sep 27, 2008

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