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The thermostat may be stuck. If it dosent open then the engine will overheat. If you turn the ac on then the air rushing around the engine will help cool it down. Replace the thermostat and it should fix it
if engine at long stand still,the engine temperature will rise about 190 degrees the cooling fan suppose to automaticaly turn on when coolant temperature sensor get hot it cause its resistance decrease causing pcm to send power to coolant fan relays and cooling fans, when you turn on AC the cooling fans suppose to turn on to cool down AC CONDENSOR, IF NOT AC WONT WORK COOLING FAN COOLS DOWN REFRIGERANT SO IT CAN RECYCLE THROUGH THE SYSTEM AGAIN.your cooling is suppose to turn on when engine at a sit still if vechicle not moving as coolant temperature rises at a set point the cooling fans will turn on cool down engine.cooling fans dont turn on when you first cold stsrt vechicle unless you have AC SWITCH ON.if cooling fans dont turn on when vechicle at a long stand still or moving along slow traffic.if coolant temperature sensor been replaced and fuses and relays okay have dealership check see if pcm driver circuit working faulty pcm will cause cooling fans not to turn on.
You need to stop using it immediately before you cause some damage or more than you may already have That is just common sense. It should not overheat or be any different than it was in the past without problem
The car has to be checked over/diagnosed,tested,etc for various issues to resolve
Borrow or Rent a car until resolved
No way to guess at the problem
You should have some type of codes avail even if the check light isn't on,you need professional help to get a start on resolving
The timing belt maybe worn & jumped or the head gasket bad.
Over heating isn't usually a cheap repair unless the thermostat sticks partially closed
The RPM moves around the car is 11 years old,so it may just need a though going over
Timing Belt,O2 Sensors,Exhaust Converter,Spark Plugs and such
If you depend on a repair shop to do things & don't have the knowledge to request work done throughout the year,then you run into a lack of proactive preventative maintenance situation. Most things are simple looking back, once resolved
Although the 4 cylinder is too underpowered to have air conditioning in my opinion, it still shouldn't overheat within 10 minutes unless something is wrong. If your Jeep doesn' not overheat when you are driving WITHOUT AC on then your compressor might have a problem and causing the engine to work too hard to turn it.
But if it overheats without the AC on, then the first thing you need to do is check the cooling fan and see if it operates! There has been a lot of problems with the cooling fan relay on this model. If that isn't it, then move to changing the thermostat and checking the water pump.
The fan is used by both the engine cooling and the A/C systems. Evidently, your cooling system is not turning it on. Is the car overheating at idle? When I review the wiring diagrams for 89 Camaros, they indicate the fan is controlled by the engine control module using inputs from both the temperature sensor and the A/C settings. This leaves me puzzled. Do you have a temperature gage or light? If gage, how hot does it get? If light, does it come on?
the fan speed is variable to save fuel, the fans don't run unless the engine gets really hot, about 230 F, that is well past the middle of the gauge if u havce one, so the fact they run with the AC on means the system is almost certainly functional as long as u are not showing an engine overheat, are U?
V6 2.8L top right rear of engine. Fan also turns on through A/C pressure switch and coolant temperature sensor, but these should operate independent of the coolant temp switch.
V8 5.0L and 5.7L (Heavy Duty) lower right rear of engine above starter.
Base model V8 uses the coolant sensor (top right of engine) and A/C pressure switches (lower right corner of eng compartment on A/C line to turn on the cooling fan. Fan is energized on all applications through the cooling fan relay.
Sounds like either you are low on coolant or the cooling fan isn't working. With engine cool remove radiator cap and check coolant level, top off if necessary. If full start engine and turn on A/C full blast, full cold the cooling fan should come on almost instantly, unless there are two individual cooling fans in which case only one may turn on. If no fans turn on check all fuses whether related to fan or not. If all fuses fine try swapping relays around, they are usually all the same size/style. If fan still doen't work you have either an open positve or ground side of the circuit, Which will require wiring schematics and a multimeter. If coolant full and fan/s turn on and engine still overheats you'll need a new thermostat installed.
Yes there is a relay, but first answer this question, do you know the fans don't come on until the engine temp is above 230+ degrees F.? That is almost in the hot zone. run a scanner on the engine and watch the ECT sensor temp reading to verify proper cooling fan operation, a quick test to see if the system works is to unplug the ECT sensor, the fans will go into failure mode and turn on to avoid damage to the engine.