RE: Dead Dak

From: Ronald Wong (ron-wong@cox.net)
Date: Tue Nov 05 2002 - 22:40:05 EST


Sounds like a short in one of your PCM harnesses. Or maybe check the
harness under your PDU for corrosion.

Ron
00 PB SLT QC 4X2 5.9 46RE 3.92 LSD
For modifications see my DML Profile (URL follows)
http://www.twistedbits.net/WWWProfile/dakota/Kw9pV1EkFeOYY

-----Original Message-----
From: owner-dakota-truck@bent.twistedbits.net
[mailto:owner-dakota-truck@bent.twistedbits.net]On Behalf Of Jon Smith
Sent: Tuesday, November 05, 2002 7:10 PM
To: dakota-truck-moderator@bent.twistedbits.net
Subject: DML: Dead Dak

Ok, I need some tips to help jolt my mind. Truck died 3 times Sunday, after
the third time it would not restart at all.

No spark, no fuel inj. pulse, although I do have fuel pressure (doesn't make
sense since the ASD kills power to the pump).

Replaced the crank sensor tonight after determining the stocker had expired.
Truck started and ran for all of about 5 seconds, now we're back to sq. 1.
I still get 14v from the 8v signal wire going to the sensor, which is higher
than battery voltage.

PCM generates a very high pitched whine, even when the key is off and
removed from the switch. I can unhook the coil harness, or crank sensor
harness and the whine will cease. It will only re-occur after switching the
ignition to "ON".

I tried swapping PCM's, when I install the MP PCM, the ASD relay trips like
mad.. a VERY audible trip, sounds like a drunk playing spoons with a pair of
chopsticks.

OTC Scantool will not communicate with either PCM, but I cannot rule out a
problem with the scanner itself.

-Jon Smith



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