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1997 Jeep Grand Cherokee Limited 5.2L Hesitation, Poor Fuel Economy, spar k knock
Posted to Chrysler Driveability on 10/8/2008 11 Replies

After i had all new exhaust installed, along with both new o2 sensors installed, the convertor code came back,along with spark knock on accel. So i did a full tune up. Plugs,wires,cap,rotor, [...] valve and fuel filter. I also check for vac leaks,fixed a coupl...

11 Replies Received (View Replies)

  Related Documents & Media  1997 Jeep Grand Cherokee Limited

 
Message Closed w/FIX

car Vehicle Data

1997 Jeep Grand Cherokee Limited

VIN 1J4GZ78Y7V
Engine5.2 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / sefi
EmissionsOBD-II Compliant
SymptomsHesitation, Poor Fuel Economy, Spar K Knock
OccursCold, Hot, on Accel, Intermittently

Trouble Codes

P0420Catalyst Efficiency Below Threshold (Bank 1)
Message Closed w/FIX

car Vehicle Data

1997 Jeep Grand Cherokee Limited

VIN 1J4GZ78Y7V
Engine5.2 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / sefi
EmissionsOBD-II Compliant
SymptomsHesitation, Poor Fuel Economy, Spar K Knock
OccursCold, Hot, on Accel, Intermittently

Trouble Codes

P0420Catalyst Efficiency Below Threshold (Bank 1)