1998 Buick riviera engine light comes on then blinks when ascending hill/slope


Asked by May 22, 2014 at 11:39 AM

Question type: Maintenance & Repair

2 Answers


Go to your local auto parts and have the codes read. They will do this for free. Post the 4 digit codes back on here and we will be able to help you figure out the issues you are having.

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The Code I got is P0304. OEM Brand: Domestic definition: Cylinder misfire detected-cylinder #4 explanation: the powertrain control module monitors the crankshaft speed and has detected a misfire condition probable cause: ignition system fault-spark plug(s), iginition wires, coil vacuum leak injector fault high or low fuel pressure Please translate/advise

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