ANNICORVETTE said:
started researching distributor modules for the 90 (only corvette would do this)guess i will run the codes and check which module is on the 90 tomarrow.
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the top module is what is in my 90. also if it stock distributor, coil is in the cap. as joel said you have to use the pack of grease that comes with it. if not there use diselectric grease. make sure both surfaces are clean and spread a thin even coat. just another tip--make sure if you replace the coil (or even if you don't) that the secondary ground strap is installed. when i bought mine i was tuning it up and there wasn't one there. figured with the computers they figured out another method. WRONG. was having a lot of trouble and finally decided to replace the coil and in the box in bold letters was DONT FORGET TO INSTALL SECONDARY GROUND STRAP. a $2.00 part caused me a lot of headaches. without it it will burn out a module.
years back if the module went the car wouldn't run. newer modules seem to do as you are describing---act up and then don't, until they get to the point of no return. if you bring it to autozone they will check it for you but if you go thru the trouble of removing it, for roughly $25.00 you can put a new one.
hope you can figure this out and if you need anything let me know.
dave
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the dynamic duoc3vr life member #97