Smells like a fire cracker. car is drinking gas. no mis fire but it jurks sometimes and doesnt pick up speed quickly. feels like it will stall but it doesnt. it could either be the throttle sensor, o2 sensor, or the fuel pump. it didn't start doing this until i poured a carb cleaner and a gas treatment in it
The smell is way to much fuel in the exhaust and the catalytic converter is overwhelmed, it will overheat and quite possibly start the truck on fire if you don't fix the over fueling problem.
SOURCE: 1997 jeep cherokee-fuel injection problems
Try replacing the Oxygen Sensors... I had the same problem and replaced my Oxygen Sensors and I haven't had any problems since.
SOURCE: Jeep GCL Backfires Stalls
Aaron, I had the same problem. It is the most expensive part of course the computer. I replaced everything as well till I replaced it. They are remanufactured and have had problems with them as well. I am on my third one now at 200k miles. Oh and by the way it does not show up on the diagnostic check. Good luck
Frank
SOURCE: hard to start, smell gas, and it seems to flood when its cold.
try this,, pump the gas a few times and take your foot of the gas then turn the key over and see what that does.. let me know
good luck ray
SOURCE: New fuel pump but no gas to the fuel rail
When I first posted, I did not read "comments" after reading what you have done and our results, it seems as though the engine control system "thinks" the engine is running when it is not. I don't believe this is a key switch problem, otherwise if you turned the key to "on" it would flood the engine. Therefore there is a strong possibility that the engine control unit is staying "hot" even when shut down, permitting the pump relay &injectors to receive trigger signals .BUT, I would also take a look at the pressure regulator on the fuel rail. flow through there may be causing the pump to stay on if too much fuel is being bypassed. And, again...did you check codes???
Testimonial: "Thank you again for ALL your help. Without you and Fix-Ya we probably would have junked a perfectly good vehicle."
SOURCE: 1998 Jeep Grand Cherokee 4WD 5.2L V8, Multi-Point
I would suspect the iac stepper motor may be dirty or plugged off when coming back to idle. I would try cleaning it and the throttle body at the same time. Q- tips make it easier to clean and brake kleen makes It easier to remove the dirt. Were safety glasses and gloves with the aresol brake clean. After everything is clean you can reconnect battery and you will have to test drive for the iac to relearn it's steps. Hope this helps
833 views
Usually answered in minutes!
×