Question about 1999 Jeep Cherokee

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Jeep overheats quickly at city driving , not at highway. and quickly cools down? had thermostat replaced. what could it be

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City driving does not force air through the radiator like highway driving does. if it has overheated, suspect a blown head gasket caused by expansion of the head when warm rubbing against the gasket and tearing it. could be the water pump, pull a heater hose and start engine. if coolant blasts out, pump is working. caution!! coolant may be hot!!! if it trickles, you have a restriction or a bad pump. stupid question, you have coolant in the radiator, right?

Posted on Jul 07, 2010

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My 2005 jeep liberty over heats, any solutions


check to see if you have a viscous fan hub and if so then replace it . Check when the overheating occurs If it is at stop lights but cools down when travelling. It is the hub. If it overheats when going slow and under load it will be the hub. If it overheats when travelling fast then check the radiator for core blockage and have a compression test done to check for head gasket / cracks Run fault codes and check for blocked exhaust system --cat converter)

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Air in the system , bad water pump , cooling fans not working ! Maybe you should take to a shop ?

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Does the hose on the fill tank need a clamp or not? why does vechile overheat if the fill tank on the side is full?


A clamp might not be needed, this is not under pressure. It would not hurt to have one, but a simple spring clamp is adequate.
A vehicle can overheat for many reasons. When does it overheat most? During periods of slow speed, stop-and-go, and idling? Or during long high-speed drives on the highway?

If it is mostly idle and slow speed, check your cooling fan. Mostly they are thermostatically controlled, only turning on when needed. If this does not work, check the fan relay, fan motor, and fan thermostat.

If it overheats mostly at high speed, it is most likely that the radiator is partially plugged and needs to be backflushed, rodded, or replaced.

If it always overheats quickly after startup (less than fifteen minutes) it may be that your thermostat is not opening properly.

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My Jeep overheats while sitting idle. When I drive, the gauge goes down quickly. I have had thermostat and fan changed. I have also had the radiator flushed. What can it be?


we have a 2003 and it did the very same thing . Its called cooling fan relay it costs about 60.00 and is located behind the headlight assembly . not very hard to fix if you know anything about cars .

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Over haeting


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1 Answer

Overheating on the highway, but not in city?


have it checked at an auto supply store for free. it could be the coolant temp. sensor.

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1990 Corolla Cooling system problems


Your temp gauge reads low on the highway, and one-half in the city?
You need to replace the thermostat. It is sticking open.
Driving at highway speeds, the blast of air that the car is cutting through enters the radiator, thusly cooling it, and the coolant inside the radiator... In town, with the lesser amount of air being forced into the radiator, (slower speeds), the coolant temperature rises. Replace the thermostat, and you will be OK.

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1 Answer

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Check your rad hoses. They will tend to collapse (**** in) & cut down on flow at highway speeds, more than city, due to increased demand & flow on cooling system. If they don't feel relatively stiff, I'd change them. You might even see them **** in while sitting and revving the engine a bit.

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