1998 Jeep Cherokee After jump starting a fellow motorist, Now my jeep idles way too high, is my computer messed up? if so can i reset it? experts
This is a old post but wanted to suggest a fix for anyone who might come across this problem. The problem obviously started with the act of kindness (jump start) and so is more than likely computer related. You'll probably find a "reboot" is in order and that's simple. Just take off your negative battery cable (good time to do a little cleaning while you're at it) and replace it. Start it up and you'll probably find the problem is gone.
Check the o-2 senser located somewhere on the exhaust, kinda a plug with 2 wires coming off of it. probably just needs replace
SOURCE: 1998 Jeep Grand Cherokee Laredo 4.oL I got a code po113
Trouble Code: P0113 (4.0L L6 VIN S Auto)
IAT Sensor Circuit High Input
Print this code data
Number of Trips to Set Code: 1
OBD II Monitor Type: CCM Details
Indicators: MIL Details
Trouble Code Conditions:
Check with ignition on or engine running; battery voltage more than 10v; The PCM detected the IAT Sensor input was over 4.90v (exc. Dakota, Durango, Ram) or 4.98v (Dakota, Durango, Ram) for 3 seconds.
Possible Causes:
SOURCE: 2002 Jeep Grand Cherokee 4.0L Oil gauge reading very high
If the weather in your area is colder than normal, your startup oil pressure will reflect this, essentially because it is much thicker when very cold. This high reading should drop to "normal" once it reaches operating temperature. This condition can also be caused by a sticking pressure relief in the oil pump, usually caused by sludge inside the engine. If you regularly maintain your vehicle and use good quality oil, this should not happen. The oil pressure sending unit is also suspect, but in your case, I would not put it at the front of the list. If oil is close to "change time" consider using a good synthetic oil (synthetics flow better at extreme temps) or using a 5W anything oil during winter months. (see manufacturers specs)
SOURCE: 2004 jeep grand cherokee idling problem
check your throttle position sensor and idle air control solenoid.
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