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1995 Jeep Grand Cherokee Question: fuel press at idle is 45psi when i accelerate it drops to 15psi till i let off

 

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hazeycrx, 4.0L 6 Cylinder, North Fort Myers, FL, January 09, 2013, 18:09
 Rookie

it jumps back to 45psi till i hit the gas again. in the morning time when it has sat all night it runs great as soon as it warms up it starts all over again. please help

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  • Answer #1

    pushrod January 09, 2013, 18:32
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     Master

    Fuel pump, fuel filter OR the fuel pressure regulator, which may or may not be part of the pump module!
    I think on this year model the regulator is fuel rail mounted.

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