'98 Chev Truck: No start

1998 GMC
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GORD BATTEN
  • MEMBER
  • 2 POSTS
A few weeks ago I left a friends house and went to start my truck and it just turned over. I had the truck towed home and started diagnosing. There was lots of fuel, and compression, but no spark, I replaced a few parts that i thought could have caused the problem. Cap, Rotor, Wires, and the coil. Still nothing, there is adequate voltage going into the coil, but nothing coming out. There is a good signal from the PCM also...I'm lost.
Feb 1, 2006 at 7:51 AM

What to check next

Diagnostic guidance. Suggested checks and possible repairs are separate from the owner's reported results.

Provide the engine identification and any existing scan results or recorded findings supporting the reported coil voltage and computer signal.

Guidance references and applicability

Source: Original question and visible replies. Owner reports and other participants' experiences are distinguished. Next steps are editorial requests for clarification or existing diagnostic findings, not a verified repair procedure or an independently confirmed component diagnosis.

Read the replies · Discussion summary and reported outcome

AI-ASSISTED GUIDANCE · REVIEWED BY 2CARPROS
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CHEVY350GUY
  • ✓Experienced Mechanic
  • 109 POSTS
check crank sensor. if it is bad the ecu is not recieving its signal. this will cause a no spark
Feb 2, 2006 at 2:46 AM
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GORD BATTEN
  • MEMBER
  • 2 POSTS
Now i've replaced the crank sensor, and $175 later there's still no fire... Any other ideas?
Apr 12, 2006 at 7:04 AM
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Discussion summary

'98 Chev Truck: No start

The owner of a 1998 Chevrolet truck reported that the engine cranked but would not start, with no spark observed. Replacing the distributor cap, rotor, wires and coil did not help. A later crankshaft-sensor replacement also failed to restore spark.

Reported outcome: The owner reported that the no-spark condition persisted after all the listed replacements. No successful repair was reported.

The thread supplies no measurement values or methods for the reported voltage and signal observations. The unsuccessful replacements do not establish which component or connection caused the problem.

Read the original discussion

AI-ASSISTED SUMMARY · REVIEWED BY 2CARPROS
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