Question about 2004 Jeep Grand Cherokee

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I have a 99 jeep Cherokee and it gets very hot often. i have 3 elect fans in it (2 that **** in, 1 that blows through). i do not run a thermostat for max water flow, i added a new radiator (The Heat Buster), i also removed skid plate under front to allow more air flow. i placed 2 intake air vents on top of hood mounted backwards to allow heat to be pulled out on engine compartment (heat rises). yet it stills runs hot. this problem has been on going and getting worse. it started only after i replaced the Crank Shaft Position Censor (old one went bad). the jeep runs just fine (no rough idle, no shaking, no power loss). only thing else i can say it miles per gallon has changed. it eats a bit more gas then it used too. I am going to change the Crank Position Censor just to be on the safe side. would that be the reason for the heat issue?????

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I think you may be on the right track. If the timing is too far advanced, the engine can overheat. The computer uses the crank sensor input to time the engine. Let us know if it still over heats with the new crank sensor in.

Posted on Sep 12, 2010

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Air,heat does not blow out vents 99 jeep Cherokee.


this is real simple physics (simple tests find this) in order.
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the SM shows, in the HVAC chapter, checking the 2 core hoses
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in web bunny land.
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