Question about Jeep Cherokee

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I've resently had to change my top ratiator hose on my 95 grand jeep cherokee an its now seeming like it wants to shut off but idles up for a few seconds an then is normal again which causes the check engin light to com on... what is my problem, an where can i get a free scanner reading

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You have air in the system. let it completely cool down. Open the rad cap. start it, then let it run until the thermostat opens, then top off the system and put the cap back on

Posted on Sep 29, 2010


  • Wrench one Sep 29, 2010

    so you understand what is taking place. the up and down idle is caused from water then air passing across the coolant temp. sensor switch. as the air hits it say to the ecu cold. then the water it says warm. so the ecu goes up and down with fuel rich and lean to compensate for the changes. hence the idle up and down.

  • Wrench one Sep 29, 2010

    The 4.0 ltr, inline 6 jeep is known to do that. not an easy motor to get all the air out of



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