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2001 Jeep Grand Cherokee Laredo 4.0L Poor Idle Quality, MIL Lamp on
Posted to Chrysler Driveability on 9/26/2008 11 Replies

howdy folks, i have one i can't shake.

01 jeep cherokee 4.0 a/t. fuel pressure was at 65 psi, changed regulator and now at 50 psi as spec. engine repeatedly trips po300,301,302,303 at idle. engine runs perfect above idle, perfect fuel trim, perfect injector p...

11 Replies Received (View Replies)

  Related Documents & Media  2001 Jeep Grand Cherokee Laredo

 
Message Closed w/FIX

car Vehicle Data

2001 Jeep Grand Cherokee Laredo

VIN 1J4GX48S51
Engine4.0 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, MIL Lamp On
OccursAlways

Trouble Codes

P0300Multiple Misfire Detected
P0301Cylinder 1 Misfire Detected
P0302Cylinder 2 Misfire Detected
P0303Cylinder 3 Misfire Detected
Message Closed w/FIX

car Vehicle Data

2001 Jeep Grand Cherokee Laredo

VIN 1J4GX48S51
Engine4.0 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, MIL Lamp On
OccursAlways

Trouble Codes

P0300Multiple Misfire Detected
P0301Cylinder 1 Misfire Detected
P0302Cylinder 2 Misfire Detected
P0303Cylinder 3 Misfire Detected