× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network
1998 Jeep Grand Cherokee Laredo 4.0L Poor Idle Quality, Hesitation, Cuts out, Stall, Misfire, Poor Fuel Economy, MIL Lamp on
Posted to Chrysler Driveability on 9/14/2006 6 Replies

vehicle runs great when cold as soon as vehicle warms up starts running bad misfiring back firing and if you let it run in shop for 15 min after hot vehicle will stall and not restart until cooled off. fuel pressure never falls off. when vehicle starts acting ...

6 Replies Received (View Replies)

  Related Documents & Media  1998 Jeep Grand Cherokee Laredo

 
Message Closed w/FIX

car Vehicle Data

1998 Jeep Grand Cherokee Laredo

VIN 1J4GZ58S9W
Engine4.0 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Hesitation, Cuts Out, Stall, Misfire, Poor Fuel Economy, MIL Lamp On
OccursHot

Trouble Codes

P0320No Crank Reference Signal To PCM
P1391CKP Or CMP Sensor Signal Intermittent
Message Closed w/FIX

car Vehicle Data

1998 Jeep Grand Cherokee Laredo

VIN 1J4GZ58S9W
Engine4.0 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Hesitation, Cuts Out, Stall, Misfire, Poor Fuel Economy, MIL Lamp On
OccursHot

Trouble Codes

P0320No Crank Reference Signal To PCM
P1391CKP Or CMP Sensor Signal Intermittent