1994 Dodge Ram if damp out will not start

1994 DODGE RAM
175,000 MILES • V8 • 2WD • AUTOMATIC
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HAUCH
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  • 2 POSTS
If we put a heater under the hood for about 2-5 minutes truck will start. Where do we start to look for the problem?
Feb 22, 2010 at 9:03 AM
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CARADIODOC
  • CAR REPAIR CONTRIBUTOR
  • 34,309 POSTS
Try to keep it in the bad state, then when it doesn't start, check for spark and fuel pressure. Fuel pressure at the test port can be misleading. It may seem to be there but it's not really.

Another thing to check is to measure the voltage on the two small terminals bolted to the back of the alternator. One must have full battery voltage and the other will have considerably less. You will see that voltage for less than two seconds after turning on the ignition switch, then it will go to 0 volts until you start cranking the engine. If no voltage appears during cranking, the Automatic Shutdown (ASD) relay isn't turning on.

caradiodoc
Feb 26, 2010 at 5:08 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.