I had the fuel pump go out, so i replaced it. Now it seems to run fine when it's cold, but when I shut it off and try to restart it, it doesn't want to restart unless I push the gas pedal to the floor while cranking, then it runs really rough and will die unless I keep the rpm's up around 2500-3000 for a few minutes, then it seems to run fine. I am also getting a code 22 for the engine coolant temperature sensor. I replaced the sensor, but still can't clear the code. I'm thinking it's some sensor that's messing up the fuel delivery, but haven't been able to track it down so far. Any help would be greatly appreciated.
96 Jeep Cherokee Fuel Problem
- Thread starter jmv3335
- Start date
Bounty__Hunter
Super Moderator
Which temp sensor did you replace, front or rear of cylinder head?
Have you cleaned your throttle body? Sounds like it may be an IAC or TPS problem as well.
Have you cleaned your throttle body? Sounds like it may be an IAC or TPS problem as well.
I replaced the one that feeds info to the computer, on the thermostat housing. And i've checked the resistance of the sensor throughout the range of temperatures, it's fine, and i've got 5 volts on the harness for the sensor, so I can't figure out why the damn light is still on. As soon as i restart it after clearing the codes, it pops right back on with a code 22
Here's an update, went and found out it was a loose connection where the harness connects to the CTS. Got the code to clear and she seems to start up and run fine now, but I don't think it's idling high enough at initial startup. It was about 40 degrees out this morning, and just a guess, don't have a tach, i'd say it was only up around 1500 rpm's for less then a minunte then back down to normal idle. It also felt like it was missing during idle, and then some when i reved it up. I'm gonna check the spark plugs and see if the incorrect sensor reading was flooding the engine and maybe fowled them out.
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