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Re: 2001 cherokee sport run hot
Bring the jeep to a parts store and have them read the engine code(s) stored in the computer. The engine light on indicates a problem, and this is the best way to figure out what's wrong. Most stores will check for codes for free (they plug a scan tool into the port under the dash to 'read' any stored codes). Write down the code #'s and ask them what they meah and how to fix the problem. If u have any further questions, u can post them here. Let me know how u make out.
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A flashing key symbol normally means an invalid key. Do you have an other key to try? That all the gauges stay at 0 seems to point to a PCI data bus problem. Was the jeep parked outside or at least standing in the rain? Many times water ingress in connector C200 up in the passengers footwell area is the problem. The connector must be removed, cleaned/dried and reconnected. Ofcourse the source of the water ingress must be found, which many times comes from the windshield.
The check engine light is because all check engine light codes are caused by components that affect emissions. It's not actually an engine problem, it's a problem with either your O2 sensor, MAF sensor, fuel/air ratio, pyrometer, or exhaust. ______________ gm diagnostic tools
If you have the 4.0L six cylinder those run hot. 210-220 degrees. If the cooling system is fine, both fans are working and it's not overheating you can try adding a bottle of "Water Wetter" to the coolant. I also changed my radiator cap to an 18psi which seemed to help run slightly cooler. You find it at the autoparts store.
I had the same problem in my Subaru.It was low on coolant and ran just a little hot for a couple of minutes, and the "check engine" light came on.After adding coolant and resetting the light it never came back on.So, try resetting the light by unplugging the positive end from the battery for a few minutes, and then plug it back in.See if it will stay off, if not you may need to change the temperature sensor located near the thermostat on the top of the motor where the top radiatorhose runs into the motor.
check for something stuck in the wheels and as for the coolant light get the car running and up to warm temp and start adding coolant to the reserviour bottle until it is up to hot level because there maybe a bubble in the line but also if might be a bad switch in the reservior bottle itself