Temp gauge gets hot when A/C is on for a while

Ballistic · Jul 1, 2014

Its done this ever sense i have owned the car when its hot outside and i turn on the A/C my temp gauge gets pretty high

Heres a pic from today, put about 12 miles on it today in about an hour just doing a few errands

I think i have read before the stock temp gauge is shit but couldn't remember??

Anyway is this normal? If not whats can i do to help it not get so hot?

EDIT: Radiator is full and looks pretty clean

CC'S95GT · Jul 1, 2014

Is the rad fan on HI with the a/c on?

Ballistic · Jul 2, 2014

CC'S95GT said:
Is the rad fan on HI with the a/c on?

Will check that tomorrow/today depending on your time zone :3

joser714 · Jul 2, 2014

That happened to me last year. I had to change all the coolant and clean the radiator/reservoir tank. I haven't had the car over heat since. Also my friend has a 96 GT and his gauge says he's running fine but an aftermarket gauge says he's running hot so I do also believe the SN gauges suck

ttocs · Jul 2, 2014

the stock gauges are really not that accurate. Mine did that so I put in an aftermarket gauge and found it was still running perfectly normal.

Ballistic · Jul 2, 2014

joser714 said:
That happened to me last year. I had to change all the coolant and clean the radiator/reservoir tank. I haven't had the car over heat since. Also my friend has a 96 GT and his gauge says he's running fine but an aftermarket gauge says he's running hot so I do also believe the SN gauges suck

My grandpa bought it new back in 97 i should ask him the last time he did anything like that, a cleaning may be good for it..

ttocs · Jul 2, 2014

its worth checking just because even if it is overheating that might be all the gauge shows. I was having issues on the dyno years ago in phoenix and that was about all my temp gauge showed but his stuff said the computer was pulling timing out to try and cool it.

Twista · Jul 19, 2014

Welcome to my life. No-one can figure out my problem and its been years i had this issue! I replaced all the stuff most people will suggest but still it gets hot on very hot days. The only thing i havent changed is the condenser up front which is beat up! This sunday im installing a mark vii fan on the mustang which will hopefully cool it down big time when its 100 degrees outside with the A/c On.

Ballistic · Aug 27, 2014

Twista said:
Welcome to my life. No-one can figure out my problem and its been years i had this issue! I replaced all the stuff most people will suggest but still it gets hot on very hot days. The only thing i havent changed is the condenser up front which is beat up! This sunday im installing a mark vii fan on the mustang which will hopefully cool it down big time when its 100 degrees outside with the A/c On.

How did that mark vii fan work out for you?

Twista · Aug 28, 2014

Ballistic said:
How did that mark vii fan work out for you?

My clutch went out on the way home from the mark install, but the car overheated on the way limping it home after installing it with no a/c on . So i ripped it out and i have no idea if it'll work or not in hot weather if installed correctly. Sucks. But it wouldve been a band-aid to a bigger problem. Its doing this for a reason.

How does your a/c condenser look?

Ballistic · Oct 3, 2014

Twista said:
My clutch went out on the way home from the mark install, but the car overheated on the way limping it home after installing it with no a/c on . So i ripped it out and i have no idea if it'll work or not in hot weather if installed correctly. Sucks. But it wouldve been a band-aid to a bigger problem. Its doing this for a reason.

How does your a/c condenser look?

Sorry for the super late reply lol, just got time to check it out and it looks fine, Was working at a ford dealership the other week and worked in a free oil change into my payment and i know a few service techs there so while they are doing that was gonna ask them about it and ill see what they think/say..