Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here XJ (84-01)
All OEM related XJ specific tech. Examples, no start, general maintenance or anything that's stock.

Starting issues

Old Nov 19, 2009 | 10:34 PM
  #1  
R.DesJardin's Avatar
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Joined: Sep 2008
Posts: 18
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From: Clarkston, WA
Model: Cherokee
Default Starting issues

Well this summer my '93 XJ 4.0 AW4 didn't want to restart after it got warmed up and it was hot out. So I replaced the CPS, well it just did it again and it's not hot out. I cycled the key on and off a couple times, could hear the fuel pump running.
So is there a check valve somewhere that's letting the fuel psi bleed down? Or is there something else goin on?
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Old Nov 19, 2009 | 11:09 PM
  #2  
Abovetimberline's Avatar
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Joined: Jul 2009
Posts: 2,158
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From: Chico,ca
Year: 89
Model: Cherokee
Engine: 4.0
Default

The fuel pump has one,you can buy aftermarket check valves to prevent the fuel from draining back to the tank.
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