mx83 heat problem

[allencr]

is it normal for the car to run hotter when aircondition is being used?

Yes, the engine power to drive it creates more engine heat, and especially from the radiator now getting feed the hot air flowing through the AC condenser.

[Cuthbert]

yep, topped it up on friday, believe i may be losing coolant somewhere. Hopefully its just a crack in a pipe or something.

Mate, if you're not leaving a water patch on the ground, I got bad news for ya.

[LeeRoy]

Thermo should be temperature switched should it not? So if the car is hot, it will be on independent of if the car is idling or not

Thermo fans are triggered by a thermatic switch - eg the switch 'switches' when a certain temp is reached.

Fans will turn on regardless of engine rpm or vehicle speed. However, when you are moving, the air being passed through the radiator as a result is normally sufficient to cool the vehicle and avoid the fans turning on.

i have had a problem with my thermo fan not working before on my mx83. i just used a permanent marker and marked a line and then drove the car and saw if the line was in the same spot. thermo fan should still run even on idle.

one more thing is there 2 thermo fans a large one and a small one on the passenger side. becasue it was the smaller one that wasn't working on my car, if i remember right

This is not the right way to test them. The fans will spin when driving just from the air passing through the front of the car and then through them. What you need to do if find out the thermastat temp, and get your hands on an Infra Red thermometer. Thermos normally kick on about 5 deg higher than the thermastat.

Eg, car heats up to 82 deg, thermo opens and *normally* cools the engine back down. If engine temp continues to rise (normally from the radiator not getting air due to the car being stopped and idling) then the fans kick in, pulling air through the rad, and then cooling the engine back down.

radiator fan won't keep engine cool enough, becasue engine isn't reving that high all the time and hence why the thermo fan comes on

I'm not too familiar with the MX83 but do they have both an engine fan and a thermo fan. Normally it's one or the other I thought.

Keep in mind AC will also have a fan for the condensor so don't mistake it for this.

[takai]

MX83s have 3 fans, a big electric thermofan on the front of the AC as a push fan. This runs whenever the AC is on. A second little thermofan which is high up on the passenger side, ive never seen my one run so im not sure when it comes on, and it has a standard engine clutch fan off the waterpump.

[destroyer]

took it to a mechanic, getting it back in a couple days.