Slow Speed Overheating

sabsab · 05-06-2009, 05:00 PM

Recently when driving 2002 1600 automatic huyndai matrix the following occurs - At speeds 50kph or over with or without a/c in use temperature satisfactory. When i have to go 40kph or less the temperature guage soon rises (so far I have kept it out of the red zone, stopping if necessary). This happens most quickly with a/c on but will happen with it of. The engine fan does turn on as required and runs after turning of motor until engine cooler. The pollen filter has been changed and a/c regassed. How do I know if there is a secondary fan and if so how do I know if it is working

**Montego** · 05-07-2009, 01:12 PM

the first thing that comes to mind is the radiator, is it partly blocked? with the engine at normal running temp. place your hand over various parts of the radiator and check that the temp. is even all over, if there are any cool spots the you will need a new one

accent sport · 05-08-2009, 10:40 AM

Don't forget the thermostat, or the fan if they don't come on at low speeds the car will overheat but won't when at motorway speeds because enough air is passing threw the rad. probably a good idea to have the fans checked, change the thermostat and do a flush and fill to be safe.

cthunter30 · 06-21-2009, 12:14 AM

QUOTE (extra @ May 6 2009, 05:00 PM)

Quote:

Recently when driving 2002 1600 automatic huyndai matrix the following occurs - At speeds 50kph or over with or without a/c in use temperature satisfactory. When i have to go 40kph or less the temperature guage soon rises (so far I have kept it out of the red zone, stopping if necessary). This happens most quickly with a/c on but will happen with it of. The engine fan does turn on as required and runs after turning of motor until engine cooler. The pollen filter has been changed and a/c regassed. How do I know if there is a secondary fan and if so how do I know if it is working

I just bought an used Matrix and found that the temperature gauge rise to half in a short time maybe like a minute or so of driving on the road. Is it normal?

You when said it hits the red zone, it almost hits the max of the gauge already?

05-06-2009, 05:00 PM	#1 (permalink)
sabsab Junior Member Join Date: May 2009 Posts: 1	Recently when driving 2002 1600 automatic huyndai matrix the following occurs - At speeds 50kph or over with or without a/c in use temperature satisfactory. When i have to go 40kph or less the temperature guage soon rises (so far I have kept it out of the red zone, stopping if necessary). This happens most quickly with a/c on but will happen with it of. The engine fan does turn on as required and runs after turning of motor until engine cooler. The pollen filter has been changed and a/c regassed. How do I know if there is a secondary fan and if so how do I know if it is working

05-08-2009, 10:40 AM	#3 (permalink)
accent sport Senior Member Join Date: May 2009 Location: Brampton Ontario, Canada 2013 Accent GLS auto silver Posts: 549	Don't forget the thermostat, or the fan if they don't come on at low speeds the car will overheat but won't when at motorway speeds because enough air is passing threw the rad. probably a good idea to have the fans checked, change the thermostat and do a flush and fill to be safe.

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