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After up to operating temp

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Old 03-12-2016, 02:24 PM
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Default After up to operating temp

after warmed up 4.0 will not restart.been through fuel system, replaced pump ,filter,checked for vap lock.looking to electrial at this point any ideas?

Last edited by 6nut; 03-12-2016 at 02:54 PM.
Old 03-12-2016, 03:32 PM
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Does it have spark?
What's the fuel pressure in psi?
Old 03-13-2016, 09:41 AM
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Just a suggestion.
I've had Throttle Position Sensor issues after engine hot. Always a good cold start. Erratic after warm up. Check your TPS settings. Cruiser's tips give the set up values.
I chased tail and replaced couple times. Current unit (Standard brand, Napa) is working flawlessly (jinx) for about a year.
Check your settings. If settings don't jive and are suspect then change the part.
I'ts a $75 part here, perhaps less in Cali.
Old 03-13-2016, 08:36 PM
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thanks,This XJ
is a Frankenstein and some parts been in the family quite a few years don't know if TPS sensor had been changed good idea thank you
Originally Posted by peep
Just a suggestion.
I've had Throttle Position Sensor issues after engine hot. Always a good cold start. Erratic after warm up. Check your TPS settings. Cruiser's tips give the set up values.
I chased tail and replaced couple times. Current unit (Standard brand, Napa) is working flawlessly (jinx) for about a year.
Check your settings. If settings don't jive and are suspect then change the part.
I'ts a $75 part here, perhaps less in Cali.

Last edited by 6nut; 03-24-2016 at 04:37 PM.
Old 03-13-2016, 08:43 PM
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Originally Posted by Turbo X_J
Does it have spark?
What's the fuel pressure in psi?
Fuel side was gone through by a good shop, and worked well for a good year b4 doing the no restart thing,
But I don't know what the pressure is, yes there is spark👍🏽
Old 03-14-2016, 07:36 PM
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Whitebox fuel pump?
Check it with a fuel pressure gauge.
Old 03-24-2016, 04:39 PM
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Okay Thanks

Last edited by 6nut; 03-24-2016 at 04:45 PM.
Old 03-25-2016, 05:23 PM
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Default after-up-operating-temp

OK fuel test good all within spec's.. after warm up no spark out of the coil,
any thoughts, replaced stock coil 100 miles ago.. what about after market?
would it be the CPS?

Last edited by 6nut; 03-26-2016 at 11:46 AM. Reason: more ideas
Old 04-02-2016, 07:57 PM
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HEY guys:
up date it was CPS, and bad ground wire at the fuel pump
now just have to get rid of squeal in serpentine, I think crappy belt?
Old 04-02-2016, 08:43 PM
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Originally Posted by 6nut
now just have to get rid of squeal in serpentine
Adjusted incorrectly it can cause all sorts of issues, check the tension with a gauge
Old 04-03-2016, 11:05 PM
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[QUOTE][[/U][/QUOTE
Originally Posted by Turbo X_J
Adjusted incorrectly it can cause all sorts of issues, check the tension with a gauge
missing bolt in front of PS pump mount, removed serp belt cleaned pulleys and both sides of the belt, fits true and tight going to run a few days.. Hopefully can find a gauge for the belt in the mean time👍🏽
Thanks for the help....
Old 04-04-2016, 05:31 PM
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My AC compressor was forced on with the wrong bolts by the previous owner so it sits every so slightly loose, and I mean SLIGHTLY. I bought this belt because I heard it REALLY helps with squeals:

http://www.rockauto.com/en/moreinfo....180314&jsn=354

And sure enough, I don't have a slight squeak when I gas it hard anymore.
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