2003 Hyundai Tiburon v6I haven't had A/C for the last two years because of a faulty switch on the control panel. I replaced it today and fired up the A/C and it blew ice cold for a few minutes. But after a jaunt around the block the engine temp skyrocketed to redline, subsequently kicking off the A/C. I did some trouble shooting and noticed that even after turning it off, recirculation fan, everything to the condition it was prior the engine could not maintain a constant, regular temperature. I turned the car off, restarted the engine, drove it for 15 minutes or so and the car operated at its regular temp, then I pressed the A/C switch on, ran it for 30 seconds, and immediately turned it off. Again, the engine could not maintain its regular running temp, making it subject to airflow (e.g. at highway speed it would cool, in stop and go traffic it would escalate to redline) for 30 mintues AFTER turning the A/C off. It's Oklahoma. We've had 20+ days straight of unbearable heat. Livestock and crops are dying. Lakes are dry, and grass is spontaneously combusting. All I want is to drive to work and not be drenched in sweat.
Country: United StatesMake: HyundaiModel: Tiburon GTYear: 2003Engine: V6
troubleshooting as described.
Hi, I'm Daniel. Welcome to Just Answer. You cannot ask to many questions. Only positive feedback needed while in info request. Lets get started.
Is the fan to ac condenser not working
The fan is actuating
that fan has to be on high for ac to work
on the radiator?
the two fans on the backside of the radiator are both actuated at idle
it needs to actuated when ac is turn on or operational temps get to 200 degrees which ever occurs first
You have a coolant issue and your ac is fine
should I just check the reservoir?
I would check water pump and the thermostat. and flush the coolant and when you flush the coolant you make sure flow is good afterwards in the radiator and the heater core.
If it's a coolant issue, why does it work fine when I don't turn the a/c on, but when I turn it on/off quickly, it can't maintain a constant temp?
If you have not checked coolant level in reservoir yes do so
Could there be an electrical problem associated with it as well?
so all you have to do is turn on ac for a sec and turn it off and it over heats
how long does it take to over heat
in short: the engine is fine... I press the ac button to turn it on, I immediately turn it off, and then the engine can't maintain temp
is fans still working when over heating
lol well, I would check it, but It's while I'm driving. When I've checked it while parked, the fans work.
and it does, in fact, overheat while parked
please bear with me. so it over heats while parked and fans on full blast
I am trying to figure out if fans stop when ac is actuated
the fans both are blowing
and it still overheats
do you think its over heating or the temp gauge is wrong?
I thought about the gauge misreading, because the temp changes rather quickly depending on my driving speed, but the ac automatically kicks off, making me believe that the temp reading is actually correct
yes the computer kicks it off for safety
There is a issue between the control switch for ac and the temp sensor. if its not the water pump or thermostat or a clog.
So for a fix action, tomorrow I'll flush the system, test the pump, and blast the radiator to make sure it's not clogged. What should I do to check the control switch?
what my concern is that the ac compressor is faulty and very hard to turn and the belt is slipping on water pump and ac compressor
if its in the morning say 95 degrees and car is cool you turn on the car and then ac how long does it take to over heat
haha, well it was over 100, the car was in the garage, and it took less than 40 seconds or so to overheat
there is no way the engine would heat up that fast.
would a faulty reading at the guage kick the ac off?
It may be electrical But check coolant to make sure its full then check belt to make sure its not damaged and if you see cracks or burnt marks or any damage take it off and check the pullyes for movement.... yes as the ecm gets the same reading at the gauge
The belt idea makes complete sense to me, and it's something I had yet to consider. Being that the AC hadn't been used in so long, it would be very logical.
You will have to check sensor connection and wire for faults and replace the sensor. and then take out hvac module and check for bad wiring.
You do have a bit of homework assigned
okay, got it all. I appreciate the help. Typically, I'd procrastinate on homework, but not this summer...
Ok good deal Your very welcome
Thank you very much for your time and assistance
ok make sure you follow up with me when i check on you in 3 days
Hi Tim I hope to hear good news from you.Thanks Dan