1990 L98 trouble...help please

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Feb 24, 2005 | 10:34 PM

6speedshifty

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1990 L98 trouble...help please

I have a 90 L98 6-speed with about 64,000 miles. It always starts right up and runs fine when it is cold. After 15-20 minutes of driving it starts to develop what sounds like a spark knock at idle. Then, recently over the last couple days it has stalled twice at a stop light and won't restart until I let it sit for about 20 minutes. I don't think it is the fuel pump because I can hear it humming when I try to restart it. After it stalls it just cranks and cranks like it isn't getting spark until I let it cool down. The temp gauge reads approx. +/- 180 when this happens. Any suggestions? Thanks for the help.

Feb 24, 2005 | 10:42 PM

8388

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St. Jude Donor '14

Any codes ? have You checked your fuel pressure ? Have you checked for spark when it's acting up ?

If no spark is present, it could be the ignition module.

Feb 24, 2005 | 10:51 PM

6speedshifty

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It hasn't thrown any codes. I replaced the cap and rotor recently and the plugs and wires about 2 months ago. Where is the ignition module located?

Feb 24, 2005 | 10:56 PM

8388

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St. Jude Donor '14

Inside the distributor. Kinda looks like this :

Feb 24, 2005 | 11:01 PM

6speedshifty

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Thanks for the advice. I'll have to check it out and at least start eliminating some possibilities. Thanks.

Feb 24, 2005 | 11:07 PM

6spd

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From: smithtown ny

when the ignition module goes bad the car won't start. your stuck. do you have a scanner??

Feb 24, 2005 | 11:15 PM

8388

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St. Jude Donor '14

Quote:

Originally Posted by 6spd

when the ignition module goes bad the car won't start. your stuck. do you have a scanner??

I'm not saying it's the module, there are several possibilities. But I have had modules that start failing intermittently at first, but eventually quit.

Feb 24, 2005 | 11:27 PM

6speedshifty

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From: California

I don't have a scanner. It seems like the problem is somehow related to the temp of the car though. It never does it when the car is cold. Only after it has been driven, parked, and then restarted and driven. What would be causing the spark knock? Is that related to it stalling or are they two separate problems?