• Hi Guest!
    You can help ensure that British Car Forum (BCF) continues to provide a great place to engage in the British car hobby! If you find BCF a beneficial community, please consider supporting our efforts with a subscription.

    There are some perks with a member upgrade!
    **Upgrade Now**
    (PS: Subscribers don't see this gawd-aweful banner
Tips
Tips

Runs bad after hot start

Mike H

Jedi Hopeful
Offline
'89XJ6

Car runs fine when started cold and keeps running good until I turn it off. When I restart the hot engine after it sits for 2-3 minutes, it runs like s**t. No accleration, no power, very rough.

Can anyone confirm my thinking it is the Crankshaft Position Sensor? When cold, the reading is about 1300 ohms, right where it should be. When hot, it is less than 500 ohms.

Thanks

Mike
 
Sounds like you have the culprit in hand. Try a new position sensor. A defective one can make an XJ run pretty bad. Jack
 
Back
Top