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Posted on Mar 25, 2012

1998 Jeep Cherokee High Idle

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

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Reggie Archer

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  • Posted on May 08, 2012
Reggie Archer
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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.

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  • Posted on Apr 10, 2012
Anonymous
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Check the o-2 senser located somewhere on the exhaust, kinda a plug with 2 wires coming off of it. probably just needs replace

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c17hydro

Greg Bernett

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  • Posted on Dec 01, 2009

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 dataprint_icon_codes.gif 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:
  • IAT Sensor signal circuit shorted to VREF (5v)
  • IAT Sensor signal circuit is open, or the ground circuit is open
  • IAT Sensor is damaged or it has failed (an internal open circuit)
  • PCM has failed


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Anonymous

  • 4 Answers
  • Posted on Nov 27, 2008

SOURCE: HIGH IDLE

check for deposits in the airhorn at the breather end

Anonymous

  • 6982 Answers
  • Posted on Jan 23, 2009

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)

66 chrgr

mike loshbough

  • 1011 Answers
  • Posted on May 14, 2009

SOURCE: 2004 jeep grand cherokee idling problem

check your throttle position sensor and idle air control solenoid.

r_mcalhoun

ray calhoun

  • 166 Answers
  • Posted on Jul 20, 2009

SOURCE: 96 jeep cherokee idles high/accelerates by itself

try unhooking the cruse cable

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check for deposits in the airhorn at the breather end
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