Quote:
Originally Posted by Okie Ken
Thanks all for the great input. I will put in a new coil and a new sending unit. I have new plugs on order (the CORRECT ones); I will gap them correctly and we'll see if this corrects the problem.
I appreciate all the help very much and I'm sure I will be asking for help in the future.
And you're right ... a Cadillac doesn't stretch. But I've seen 'em burn to the ground!
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If you ordered the correct Bosch plugs, they'll be pre-gapped from the factory. Make sure to use some good copper-based anti-seize compound on them, aluminum heads are unforgiving of dry plugs.
Check the cap and rotor. M103 are pretty hard on those parts. Basically, I'd start with a tuneup and progress from there.
Oil pressure sender is a common failure, and your symptoms match it exactly. Easy fix, and pretty cheap too.