XJ6 & XJ12 Series I, II & III 1968-1992

Car Won't Crank When Hot

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Old Dec 16, 2018 | 12:05 PM
  #1  
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Default Car Won't Crank When Hot

Hello,
We have recently detected another issue with the XJ6 - S3

The problem with the car is when the engine gets hot and the ignition is turned off, the car never starts unless the engine cools down.

What might be the possible issue now and how do i get it fixed?

Thanks
Mike
 
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Old Dec 17, 2018 | 12:31 PM
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Two suggestions:

1. Poor connections. Battery cables and the under the car ground.

2. The starter is failing. Replace or refresh.

Carl
 
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Old Dec 18, 2018 | 06:08 AM
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Hi Mikega,

Please clarify 'won't crank'

The engine literally won't crank over, or

engine cranks over but won't ignite (start).

As JagCad say's, if it won't crank then there is most definitely an electrical issue.

If it cranks over, but doesn't start when hot, then other factors come into play, like

weeping fuel injectors
Faulty coil / amplifier
Bung Temp Sensor
A longer shot - wiring harness flaky

More specific info, more specific diagnosis.

Cheers,

Nigel
 
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Old Dec 18, 2018 | 08:11 AM
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Originally Posted by Jag-o-nomic
Hi Mikega,

Please clarify 'won't crank'

Mike has two postings on the same issue. He has a true 'no crank' problem. That is, the starter does not operate

The (what should be) common terminology to differentiate is "No crank, no start" and "Cranks but won't start"

Engine Will Not Crank Checklist

Cheers
DD
 
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Old Dec 18, 2018 | 06:25 PM
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Originally Posted by Doug
Mike has two postings on the same issue.
Well that's more confusing than a wiring diagram :-)
 
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Old Feb 28, 2025 | 10:24 AM
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DELETE
 

Last edited by yellowbandit; Feb 28, 2025 at 10:26 AM. Reason: wrong post
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