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Engine Stall Advice 900 1991

Susan,

One of the things that people had been asking me was whether the tach dropped to zero as soon as the engine died or did it gradually drop down due the the fact that the engine was still turning. If it dropped immediately, it was supposedly electrical. If gradual, it was supposedly fuel realated. I was never sure which mine did because it typically happened while I was at a fairly low idle (driving slow or while sitting at a stoplight/sign). When it did cutout on the highway I "think" it dropped slowly, but in ever case of a highway cutout it would restart on its own while still coasting.
So far I've replaced only the Fuel Pump Relay and the RPM(speed)Sensor and "SO FAR" it hasn't cutout again "YET". If you're tach is moving while cranking than it doesn't sound like the RPM Sensor, but who knows. After I replaced mine, the tach needle still doesn't move so I'm holding my breath. The only other things I have in mind to change next if the problem continues are the Power Stage and the Coil.
I also hear conflicting information on which parts tend to die either intermittently or all at once. It would be nice to know for sure, if that's possible.

john






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