Question about 2001 Jeep Cherokee

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Black exhaust smoke from Jeep Cherokee 2.5 CRD

I bought a 2003 Jeep Cherokee 2.5CRD second hand. It had a few problems including black smoke when pressing down the gas hard, very limited power at low rev's (<2000 rpm) and it could not pull away at any slight incline without stalling. The Toyota dealership where I bought it offered to pay for any repaires needed. I took it to a Jeep dealership and they determined that the problem was a faulty rail pressure sensor. After replacing it the power was restored, but there is still black smoke when I press down on the gas and I still have difficulty pulling away at a steep incline, especially in reverse. The fuel consumption is also not what I expected. The air filter was replaced during the service. My biggest concern is the smoke.

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  • Anonymous May 14, 2009

    I Have a 2005 Cherokee 2.8 CRD. A few months ago I started getting rich black smoke when I pushed the accellerator, lost power and fuel consumption went throught the roof. The problem turned out to be a hose to the turbo had split. Once the hose was replaced by the dealer the car was back to normal. Hope this helps.



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The smoke and the the bogging down are due to either too much fuel flow or to too little airflow. Your engine is flooding and running way to rich hence the low fuel mileage. Could be a faulty pump with too high pressure, bad or wrong sized injectors, (assuming they actually fixed the sensor problem) or airflow restriction,

Posted on May 08, 2009


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