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How to fix high coolant temp warning - Cars & Trucks

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Posted on Apr 03, 2015

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2016 susuki king quad 500 high temp warning light comes on mechanic says that is has something to do with the fuel injection system. Could this be possible?? never heard of such a thing!! TY


The fuel injection has nothing to do with coolant temp, unless it is running extremely lean. Do not alter exhaust system. Check for correct coolant level. Check for bad coolant temp sensor. check thermostat, Check for correct cooling fan operation and related sensors and relays. Don't risk a blown head gasket or the warranty being void

Jun 02, 2017 | Cars & Trucks

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At start up engine runs at very high ilde and wil not kick down to regular idle. Just replaced throttle position sensor.


Check coolant temp sensor untit. It tells the computer what the coolant temp is at and adjusts the cold start accordingly. If its bad it'll stay on high idle until it warns up.

Mar 14, 2016 | Cars & Trucks

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While driving down the road in my 2003 pontiac montana. The change oil light comes on and high temp warning light comes on. When the high temp light comes on the van losses all power.


Check the coolant first. Add as needed. Once full. heat it up in the driveway and check for leaks. 3.4 montana, I would guess the water pump. Change the T stat also.

Aug 09, 2015 | Pontiac Cars & Trucks

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My 1998 Jeep Cherokee Sport 6 cyl. acts like it wants to stall. I recently had a thermostat sensor replaced and that seemed to fix the problem. However two months later, the problem has returned. A


I'm assuming you mean a coolant temp sensor. The sensor tells the computer what the coolant temp is.
Normally when a sensor fails the check engine light comes on to warn the driver. Normally but not always.
One thing that could affect both problems you describe is the idle air control valve. If the valve fails or sticks, the engine can stall or have a high idle speed. The computer controls idle speed by how much air is allowed into the throttle body.
The throttle body could also be very dirty.

Sep 16, 2012 | 1998 Jeep Cherokee

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The themomitor on the warning signs keeps flashing. i don't no what it means as i don't have then manuel!


The thermometer image has 2 meanings

1- check your heat gauge the temp might be too high

2- check your coolant level

In your case it is most probably your coolant level.

Top it up with normal water and have it checked out, it must be leaking coolant somewhere.

the coolant bottle is the big round one that looks like a ball with a blue or black flat cap.

Feb 15, 2011 | 2004 Volkswagen Golf

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At high speed engine temperature is Ok, at low speed or idle it warms up to over half way and the coolant level warning light comes on. There is plenty of coolant, an new water pump and a new thermostat....


is cooling fan coming on?? the coolant level light pertains to a sensor that is in radiator side tank that is notorious for going bad you may have two seperate problems normal temp at high speed tells me the wind passing across radiator is keeping cool when stopped or in traffic as temp increases pcm commands fan to come on if it does,nt you will heat up

Mar 19, 2010 | 2000 Oldsmobile Silhouette

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High idle on 89 4runner v6 EFI. Problem started after a leak in the cooling system causing it to loose pressure and get hot. After fixing the leak and changing out the thermostat the issue remains. It's...


Make sure the coolant temp. sensor is connected.

Bad coolant temp. sensor?

Coolant temp. sensor is ground out on the engine block?

========
The ECU use the resistor value from the coolant temp. senor to determine the block temp.

If the value is out of range.....the ECU will "think" the motor is still cold and let it ran at high idle.

I will use a carburetor cleaner to clean out the throttle plate and intake.




Nov 30, 2009 | 1989 Toyota 4Runner

1 Answer

Flashing Red Temp light


This means your car is running too hot. After it cools down check the coolant level and top off as necessary, a 50/50 mix of water and coolant/antifreeze should be fine.

If it it blinks again it is one of two thing, the coolant level is low or the coolant temperature is too high, too high could be an improper water to coolant ratio, i.e. too much water.

Best of luck!

Apr 09, 2009 | 2000 Volkswagen Beetle

1 Answer

Check gages light is on what does it mean?


could be low fuel , low coolant temp , high coolant temp , low oil pressure , low voltage , high voltage , have a mechanic put a scanner on it make sure all is normal , might have false warning

Feb 17, 2009 | 2003 Pontiac Bonneville

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A warning light comes on - looks like a radiator w/a fan


Check your coolant level. Add if nessesary.

Dec 19, 2008 | 1995 Volvo 850

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