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: My Isuzu Rodeo has problems cranking in the morning mostly sometimes in the evening takes a long time to start. new filter and spark plug

Check to see if your car has a cold start injector time switch, as well as a cold start injector or other related fuel delivery components. It could be a fuel supply issue, which would involve anything from the fuel...

Q: The is the sound and feel of a "clunk" when putting the car into the drive gear and when coming to a complete stop.

The pop or clunk is the transmission shifting into first gear. If you look at this complaint on the Jeep Forums you will find many different opinions of what it may be and what fixed their vehicle. The first thing...

Q: Engine seized in 1997 Toyota 4Runner

A few things to check before you condemn the engine. Sometimes a coolant leak can get into the cylinders of the engine when it is sitting. This will hydro-lock the engine. Water above the piston does not compress and will...

Related articles

P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...