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1996 Jeep Cherokee Classic 4.0L Excessive Emissions
Intermittently the upstream O2 sensor shows a full rich condition and the post cat sensor follows suit, Checked the following with scanner and fuel pressure gauge attached, Map sensor OK, Fuel pressure OK, Coolant temp OK, No obvious vacuum leaks or exhaust le...
FIX posted 2/14/2011
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Message Closed w/FIX
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Related Documents & Media | VIN | 1J4FJ78SXT |
| Engine | 4.0 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | Fuel Injection |
| Emissions | OBD-II Compliant |
| Symptoms | Excessive Emissions |
| Occurs | Intermittently |
Trouble Codes
| P0420 | Catalyst Efficiency Below Threshold (Bank 1) |
Message Closed w/FIX
Vehicle Data
1996 Jeep Cherokee Classic
| VIN | 1J4FJ78SXT |
| Engine | 4.0 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | Fuel Injection |
| Emissions | OBD-II Compliant |
| Symptoms | Excessive Emissions |
| Occurs | Intermittently |
Trouble Codes
| P0420 | Catalyst Efficiency Below Threshold (Bank 1) |
Video