1999 Jeep Wrangler Sport 4.0L Excessive Emissions, Poor Fuel Economy, MIL Lamp on
At first this jeep didn't seem to hard to deal with. Basically it Is always running rich. The Long and short term fuel trims are at -30% or more. Another interesting thing is it has a high idle. Well We checked for vaccum leaks with a smoke machine and none we...
FIX posted 9/2/2005
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Message Closed w/FIX
Vehicle Data1999 Jeep Wrangler Sport
Trouble Codes
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Message Closed w/FIX
Vehicle Data
1999 Jeep Wrangler Sport
VIN | 1J4FY19S7X |
Engine | 4.0 L / 6 cyl / GAS |
Trans | 3-speed Automatic |
Delivery | FI / mfi |
Emissions | OBD-II Compliant |
Symptoms | Excessive Emissions, Poor Fuel Economy, MIL Lamp On |
Occurs | Always |
Trouble Codes
172 | Fuel System Rich |