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iHav to Drive
Trucks and SUV
Car overheats when not driving. 2001 jeep grand cherokee fan..PLEASE HELP?
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<blockquote data-quote="Eric" data-source="post: 1435396" data-attributes="member: 207269"><p>Coolant level is good?</p><p>Radiator is in good condition?</p><p></p><p>Lets consider the fan's needs.</p><p></p><p>It needs to have power, in this case 12 volts.</p><p>It needs to be told when to turn on, typically a temperature switch and a fan relay do this job.</p><p></p><p>I would verify that it is getting 12 volts to the fan motor.</p><p>I would check the temperature sending unit's connections too and verify that the fan relay is correctly connected as well.</p><p></p><p>You may need to hit up a library and copy the page from a repair manual showing the cooling system wiring diagram.</p><p></p><p>If this was a common fault (and it could be) the local dealer would show a history of having sold a few. Call them up and ask about this part's history. If they sell 25 a year then we can deduce that it may be the item the shop suggested.</p><p></p><p>Always, always begin with the basics on any of your vehicle's operating systems.</p></blockquote><p></p>
[QUOTE="Eric, post: 1435396, member: 207269"] Coolant level is good? Radiator is in good condition? Lets consider the fan's needs. It needs to have power, in this case 12 volts. It needs to be told when to turn on, typically a temperature switch and a fan relay do this job. I would verify that it is getting 12 volts to the fan motor. I would check the temperature sending unit's connections too and verify that the fan relay is correctly connected as well. You may need to hit up a library and copy the page from a repair manual showing the cooling system wiring diagram. If this was a common fault (and it could be) the local dealer would show a history of having sold a few. Call them up and ask about this part's history. If they sell 25 a year then we can deduce that it may be the item the shop suggested. Always, always begin with the basics on any of your vehicle's operating systems. [/QUOTE]
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