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Yes, it can raise engine temperature. And heavy traffic adds to the strain on the engine, also impacting heat. The reason the temperature is normal at high speed is that then there is more airflow through the radiator helping dissipate heat. A/C inspection, Cooling System check, and Thermostat check by professionals are recommended to find the cause. I'd check what an A/C repair/replacement would cost in case that turns out to be the problem. If the coolant is low because of a leak, no use getting it recharged before the leak is fixed.
If you are asking the normal position of the temperature gauge needle in normal operating mode it will be about half way in the gauge reading( between cold and hot). IT may vary about a needle width regardless of the load on the engine and if it climbs up in traffic then you have a problem with the fan operation
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
Normally the fan will not come on until the temperature is high enough to open the thermostat then your fan will come on. It sounds like it's working the way its ment to. When you turn the a\c on the fan will come on to keep your engine cool.
It can be driven but you will have to monitor the engine temperature guage to make sure it doesn't get too hot. As long as your driving steadily over 30 mph, you should be fine. The problem is if you are stuck in traffic, your engine can overheat.
What you can do if you are stuck in traffic is turn your heat in your car to max and point the vents out the window. That will help somewhat. If you are stuck in traffic too long it may be wise to pull over and shut the engine off until the traffic is moving at a good clip again.
At idling speed an engine does build up a lot of heat and the cooling fan will kick in. In slow moving traffic or traffic jams the temperature gauge can touch the red - particularly on hot days. The reason it cools down when you start moving is because of the air flow through the radiator.
Presumably there are no leaks from the cooling system otherwise you would have mentioned it. In normal circumstances the fan will not be running as you are driving at speed, as the air-flow through the radiator is sufficient to cool things. The fan only kicks in to get rid of excess heat - and this usually occurs at idling speed or after you have parked the car.
If the fan is running all the time as you drive, this points to either a fault in the fan switch, or the car is running too hot. presumably in normal driving the fan isn't running and the temperature gauge reads normal?
It is common - in stationary traffic many cars overheat (particularly big engined models) try to stall and 'cut out'. Restarting can be difficult until the engine cools down.
Is your car overheating in normal driving conditions or just at idle speed? Overheating in normal driving conditions can be caused by things like a failing water pump, blocked radiator, collapsed hose, faulty thermostat or, in the worst case scenario, cylinder head problems.
Overheating at idling speed is 'common'. Check your coolant level. If your car isn't using/losing coolant then there probably is no major problem. You can flush out the cooling system and refill with new coolant - and also check your radiator. Are the cooling fins crumbling with age? Or maybe they're partly clogged with insects and debris from the road? A blast with a hosepipe wil sort that out ..
The question is how much does your car overheat in normal driving? If it doesn't .. it appears as though you have nothing to worry about as such. Most cars have 2 speed fans... the 2nd faster stage kicks in at some point dependant on engine temperature. Perfectly normal.
As long as the temperature isn't spiking and the fan is turning on. It is normal for the temperature to rise to halfway on the gauge and then for the radiator fan to kick on. Sitting in traffic will normally do this.
the starter may be spinning but the gear on the starter is not sliding over to catch the flexplate to turn the engine,,,,so you would need a new starter in that case
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