When the engine is cold it fires right away, but when it's hot, it cranks but won't start.
Jun 2, 2022 at 2:09 AM
Will not start when engine is hot
1995 GMC SONOMA
RAY ZAYAS SR.
- MEMBER
- 1 POST
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Hi,
What you described sounds like a faulty crankshaft position sensor. When they start to fail, they are affected by heat.
Take a look through this ink and let me know if it mirrors what you experience:
https://www.2carpros.com/articles/symptoms-of-a-bad-crankshaft-sensor
If it does, this is what I suggest. When it won't start, check to see if there is spark to the plugs. If there isn't, suspect this sensor. Here is a link that explains how to check:
https://www.2carpros.com/articles/how-to-check-for-ignition-spark
If you confirm no spark, chances are this is the issue. Here is a link that explains how in general how one is replaced:
https://www.2carpros.com/articles/crankshaft-angle-sensor-replacement
If you look below, I attached the directions specific to your vehicle.
Let me know what you find or if you have questions.
Take care,
Joe
See pic below.
What you described sounds like a faulty crankshaft position sensor. When they start to fail, they are affected by heat.
Take a look through this ink and let me know if it mirrors what you experience:
https://www.2carpros.com/articles/symptoms-of-a-bad-crankshaft-sensor
If it does, this is what I suggest. When it won't start, check to see if there is spark to the plugs. If there isn't, suspect this sensor. Here is a link that explains how to check:
https://www.2carpros.com/articles/how-to-check-for-ignition-spark
If you confirm no spark, chances are this is the issue. Here is a link that explains how in general how one is replaced:
https://www.2carpros.com/articles/crankshaft-angle-sensor-replacement
If you look below, I attached the directions specific to your vehicle.
Let me know what you find or if you have questions.
Take care,
Joe
See pic below.
Image (Click to enlarge)
Professional Diagram for 2CarPros Members
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Jun 2, 2022 at 10:21 AM
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