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Old 05-21-2010, 07:44 PM   #1
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I have a 92 oldmobile 88 royale that I recently bought for 300 dollars to use as a daily driver. The car looks good and runs but there is one problem. The engine has a slight miss/hesitaion when you give the car a specific amount of throttle. If you start out slow and take it easly like grandmaw you dont notice it but like when trying to cross an intersection you'll step on it enough to notice the hesitation. I was hoping someone would have some idea on how to fix it. The car has the 3.8 with 251000 miles.
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Old 05-21-2010, 10:06 PM   #2
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Start with changing the plugs and wires. Test the coils. Do you get a SES light flashing? Clean the MAF as well.
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Old 05-23-2010, 08:24 PM   #3
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My '88 has always had what I'd call a hesitation, a bit like carb'd cars used to have. It seemed to reduce a bit after the fuel filter was replaced (was the original, rusted in so I waited till I had to replace the whole fuel line to do it).
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Old 05-24-2010, 12:36 AM   #4
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No lights. How would I go about testing the coil and cleaning the maf (mass air flow sensor right?)
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Old 05-24-2010, 12:38 AM   #5
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Check out the tech info area. You will find testing and cleaning information there.
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Old 05-24-2010, 02:04 AM   #6
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! would lean towards a bad coil or plug wires does it run worse when its wet out? and as far as cleaning the maf im not so sure it has one think it only has the map sensor
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Old 06-17-2010, 10:02 PM   #7
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cleaned the maf no difference and yes it does run worse when its wet
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Old 06-17-2010, 10:17 PM   #8
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Worse when wet indicates a bad coil or plug wire. Take a spray bottle and mist the plug wires and coils when the engine is running. then turn off all the lights so it'* dark. Watch for blue flashes. If you see any that'* a ground. What ever is flashing needs to be replaced.
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Old 06-17-2010, 11:26 PM   #9
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Tried mist now more than 4 times no blue flashes
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Old 06-21-2010, 09:27 PM   #10
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Check the coils for correct OHM reading. If its got platinum plugs, of any brand, change em out. 3.8'* do not like platinum plugs.
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