No Spark
 

Stranded again but close to home, thankfully. One thing I can be happy about is when she dies she dies close to home.

Last week I had a short that took out my DME relay, no fuel.

I fixed that problem and today after accelerating in a turn, lost power, fuel pump working but no spark. I checked a plug held to ground, no spark.

Last week I installed a new CHT, ref, and speed sensors. I re-gapped the speed sensor to .8mm.

I guess I can pull my HE and recheck the speed sensor gap but I could have sworn the sensor housing was plenty tight.

Until today, after the replacements, she ran perfect.

Coils are new and check out fine. I'm again thinking DME but I will check the pin outs tomorrow at the DME connector.

I have a question. If the Speed and ref sensors are sensing correctly, will the fuel pump come on? It does. I hear it when I try to start. I have two pumps and tried both while troubleshooting on the road (snowing, a real drag) I also hear what appears to be the injectors clicking when I'm trying to start.

Comments please....


John

The DME turns the pump on when the key is in start position.

If the injectors are pulsing that mean the DME thinks the engine is turning.

Your sig says twin plug. How did you do that with a DME? Suspect?

Two coils triggered by the DME and a 964 distributor, been that way for 35,000 miles of working perfectly.

Don't know about your car, but mine when completely electrically dead on the spark and it turned out I had an internally shorted fuel injector that totally confused the DME. TRE said they'd never seen one before.

Thanks Hugh,

I will check each FE and see if this is a issue.

Others?