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1999 Jeep Grand Cherokee Limited 4.0L Excessive Emissions
This Jeep will not pass the Calif. 25 mph ASM test for HC. Have tested O2 sensors and all seem to be working to specs. Have tested all ground to PCM and all are OK. Have replaced spark plugs with no change in readings. Have changed engine oil with no change. H...
FIX posted 12/14/2007
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Message Closed w/FIX
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Related Documents & Media | VIN | 1J4G268S8X |
| Engine | 4.0 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI / SEFI |
| Emissions | OBD-II Compliant |
| Symptoms | Excessive Emissions |
| Occurs | 25 Mph Asm Test |
Message Closed w/FIX
Vehicle Data
1999 Jeep Grand Cherokee Limited
| VIN | 1J4G268S8X |
| Engine | 4.0 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI / SEFI |
| Emissions | OBD-II Compliant |
| Symptoms | Excessive Emissions |
| Occurs | 25 Mph Asm Test |
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