2001 Dodge Ram No Check Engine Light And Truck cranks but w

Tiny
BLINDPOLARBEAR
  • MEMBER
  • 2001 DODGE RAM
  • V8
  • 2WD
  • AUTOMATIC
  • 100,000 MILES
My truck just stopped working. I parked it and it wouldn't start again. I have no Check Engine Light and when I checked the diagnostics, there were no error codes.
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Sunday, December 20th, 2009 AT 2:06 PM

5 Replies

Tiny
JDL
  • EXPERT
Welcome to the forum, thanks for the donation. If it cranks good but won't start, have a helper crank it, while you check for spark at the plugs. If spark everywhere, use a gage and check fuel pressure. You might also check for primary voltage at the coil and injectors, engine cranking.
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Sunday, December 20th, 2009 AT 2:15 PM
Tiny
BLINDPOLARBEAR
  • MEMBER
I have no spark from coil and no power to coil
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Sunday, December 20th, 2009 AT 2:36 PM
Tiny
JDL
  • EXPERT
If no primary voltage at the coil or injectors, that voltage comes from the asd relay. I'm not saying the relay is faulty, if the computer doesn't see the proper cam and crank signal, it may not ground the asd relay. I'd have to check voltage circuits at asd relay, then go from there.
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Sunday, December 20th, 2009 AT 2:47 PM
Tiny
BLINDPOLARBEAR
  • MEMBER
Checked everything that I can find in the manual. I have pulled the Crankshaft position Sensor, and I get no reaction at all on my ohm meter when the sensor is activated, i.E. Turned a quarter revolution. Does this mean the sensor is no good?
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Sunday, December 20th, 2009 AT 5:49 PM
Tiny
JDL
  • EXPERT
I'm not sure about your test? I'd start at asd relay circuits. Terminals 30 and 86 are hot all the time, you can use testlite.


http://www.2carpros.com/forum/automotive_pictures/170934_asd_relay_1_1.jpg



As far as the crank sensor, check the circuits with everything hooked up. Violet wire with white tracer is ref voltage-- black wire with lite blue tracer is ground-- Gray wire with black tracer is signal. Engine cranking, the signal is a dc pulse.
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Monday, December 21st, 2009 AT 10:03 AM

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