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Post by 1013jess on Apr 1, 2015 6:12:25 GMT -6
My 99 is running terrible ... the check engine light has come on before but it's never flashed as its doing so now. Is this a catastrophic warning ?
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Post by oldgoat on Apr 1, 2015 7:19:12 GMT -6
Yes it is. As best I know it normally means the engine is running very rich and dumping raw fuel into the exhaust and damage to the catalytic converter will result. It'd be best to not drive the car.
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Post by sall on Apr 1, 2015 7:41:22 GMT -6
Multiple random misfire.
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plato442
Aurora Driver
Life, Liberty, and the pursuit of Oldsmobile...
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Post by plato442 on Apr 1, 2015 7:59:29 GMT -6
x2 Mine did this because fuel pressure was only at 35 pSI and causing the multiple random misfires (so i think) |
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RCA1186
Administrator 
Rob
Go Pack Go!
Posts: 4,836 
Staff Member
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Post by RCA1186 on Apr 1, 2015 11:35:46 GMT -6
Yup, multiple misfires. The light flashes to warn you not to drive because as was said the misfires could cause damage to your catalytic converter.
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Post by Toronado3800 on Apr 1, 2015 20:41:23 GMT -6
My 99 is running terrible ... the check engine light has come on before but it's never flashed as its doing so now. Is this a catastrophic warning ? If you have a decent smart phone there are amazingly cheap blue tooth code readers. The code might tell you which cylinder. Next tool to use is a multi meter. It will let you test resistance and connectivity in your plug wires and coil packs. |
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