Question about 1996 Oldsmobile Bravada

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96 old bravada multiple misfires

I have already checked/tested the ignition module-ok. changed the coil pack. still runs rough. i checked the plugs, 2 are not responding. driver side rear, and passenger middle plugs. what do you think the problem is? a fuel pump, maf sensor, or something else.
when i put the new coil pack in, no difference, still ran really rough. rumbling like a built 350. i then was running the bravada last night and found out the pcv upper boot was blown out. i changed that and it ran smoother. any help would be great, i have wasted my entire vacation trying to figure out what i need to do.

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  • Aaron M Johnson May 25, 2009

    do you think the maf sensor might be bad? my buddy was trying to tell me that the fuel pump (235.00) was gonna need to be changed. he checked my fuel pressure from the rail, and it read above 50. when started it ran between 50-55 sporatically. is the fuel gonna read that way if the plugs. wires are bad? is the fuel pump ok?

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On those amung other there is a wire from the module to the crank sensor it might have melted and be shorting out. make sure its not melted between the sensor and the module. they mainly melt after awhile.

Posted on May 25, 2009

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I think the problem is more in the plug wires/plugs. Get a long piece of plug wire, long enough to fit to any plug, and check the plugs, one wire at the time. You'll rule out wires and find the bad one if there is one.

Simplest way? Go to your nearest Autozone, and ask to hook up their portable handhelt and check your engine.

Bet it is plugs and/wires. You checked two with no response? Replace those!

Posted on May 25, 2009

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