Q: I have a 97 jeep Cherokee thats has been running rough. It smells like gas when I drive for awhile and then this morning after dri

asked by on

My car has been smelling like gas when I drive, I notice thick black smoke come out the exhaust when I accelerate. It didn't want to start this morning after I drove it for awhile each time it would turn over soon as I left the key go it would cut off again

My car has 258666 miles.
My car has an automatic transmission.

From your description, the cylinders are being oversupplied with fuel. If the fuel trims (from a scanner) are high negative, for sure there is too much fuel and a diagnostic would be required to determine why. Just as an example, the fuel injectors could be leaking or the fuel pressure regulator might have failed, raising supply pressure too high. Also, the possibility of misfiring has to be looked at. Once this is repaired, be sure to check catalytic converter operation because running rich like this can damage (plug up) the converter causing other problems. To get this resolved, please simply request an engine diagnostic - running rich and the responding certified mechanic will pinpoint the cause of this problem and implement the necessary repairs. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. I have a 97 jeep Cherokee thats has been running rough. It smells like gas when I drive for awhile and then this morning after dri

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: The car starts only with Easy Spray

Hi there. Thanks for writing in about your 2010 Ford Transit Connect. It sounds like there may not be a crank signal occurring at the normal cranking speed. If there is not, then the engine will not start. If adding...

Q: I have a 97 Jeep Cherokee that won't start. When I turn the key over, the Brake Warning Light comes on as if the parking break is on

Hello and thank you for contacting YourMechanic. The brake light is tied into the alternator and also the neutral safety switch. If the alternator is not producing enough voltage, then the brake light will light up. If the power is...

Q: My 97 grand marquis start but after accelerating and I let go the car will turn off or it will idle what do.you think the resaon?

Stalling in the circumstance that you are describing could be due to a faulty mass airflow sensor, faulty camshaft or crankshaft position sensors, worn spark plugs, wires or defective ignition coil(s), inadequate fuel delivery or pressure (clogged fuel filter, injectors,...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...