I believe I have found the root of my no start problem when hot , thanks to much reading and help here on the forums . wouldn't have found it without the info. Thanks for the help !
Seems my range switch looses "park" hot , no light , cools down ,light comes back , clear the engine fault , and it starts .
Then I found out how much a new one is . OMG..
has anyone figured out how to repair/rebuild this switch ?
Does anyone like ASI repair them ?
I don't think it's an adjustment problem because the park light is there when cold ,goes away hot ,then comes back as it cools.

 

And here is a classic example of why we ask all members to include Model and Year details in their forum Signatures ..........

Graham

 

Yup. 3 different Transmissions, 3 different Range Switches.

 

I've fixed my signature. car is a 97 xk8 4.0L with a zf5hp24