UIM failure plug fouled??? - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 11-21-2006, 07:42 AM   #11
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What brand of plug wires are on this car? Maybe we could suggest a better brand to keep them from arching.
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Old 12-03-2006, 01:05 AM   #12
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Quote:
Originally Posted by bill buttermore
I wonder if you might have mis-routed your plug wires? Depending on which wires are crossed, the car can run remarkably well most of the time, but very poorly others. It is worth a simple doublecheck.

On the UIM....how long have you been running with the loose pipe? If it is more than a couple of weeks, I would strongly suggest you remove the UIM and very carefully examine the gasket and upper around the EGR bore for damage. You may have to replace the gasket or the gasket and the UIM. Even if both are re-useable, it will be much easier to ensure that the stovepipe is properly seated with the UIM off.
Well I took my throttle body off cleaned all that black stuff out and found out the stovepipe is in snuggly and I was wondering if some1 can lemme know what spark plug wires go to what cycl. It was also a bit of oil in my uim not to much but enough to make it wet I thought it was antifreeze at 1st but its not. Any help would be great.

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Old 12-03-2006, 01:45 AM   #13
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The terminals on the coils are numbered. The front three cylinders are 1,3, and 5 from the left, and the rear cylinders are 2, 4, and 6 from the left.

Make sure to route the wires carefully and use the factory clips to hold them. A little dialectric grease inside the boots will make them easier to remove when replacement time comes again.
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Old 12-03-2006, 02:16 AM   #14
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Here'* a diagram

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Old 12-03-2006, 05:03 PM   #15
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And, oil in the the UIM sitting on top of the LIM is pretty much a normal condition for these cars. It comes from the condensation of oil vapors flushed out of the crankcase by the PCV system.
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