A/C on, temp gauge spikes fast!

[gmanpaint]

It is that time of the year for A/C.
I used it yesterday for the first time this year. After 5 mins of driving with it on med speed, the engine started getting real hot, or at least the temp gauge said so. I shut off the A/C and the needle dropped.

I have a thermostat problem to begin with, temp goes way up before it will open. Engine cools down rapidly once it opens.

Are these 2 things connected?

A/C does blow very cold air, and fans run perfect. All vents work fine, blend door is fine. Compressor is not fast idling. I am fine on antifreeze. Engine fan seems to be working, but I cant tell while driving. I hear it upon start up only.

 

[offroadjosh]

It is that time of the year for A/C.
I used it yesterday for the first time this year. After 5 mins of driving with it on med speed, the engine started getting real hot, or at least the temp gauge said so. I shut off the A/C and the needle dropped.

I have a thermostat problem to begin with, temp goes way up before it will open. Engine cools down rapidly once it opens.

Are these 2 things connected?

A/C does blow very cold air, and fans run perfect. All vents work fine, blend door is fine. Compressor is not fast idling. I am fine on antifreeze. Engine fan seems to be working, but I cant tell while driving. I hear it upon start up only.

You need to change your stat and you should be fine.


Josh

 

[gmanpaint]

Ok, I bought a new thermostat. I will be tinkering with my rig this weekend, and will see if it makes a difference.

 

[Dan Whitaker]

It's the "Humbolt Curse" so beware. Anytime someone is at Jon's something happens.

 

[gmanpaint]

You mean strange things happen there? Like teeth being knocked out? Or like a pinion bolt snapping in half? I have yet to travel to Humboldt in nice weather! Even leaving has been terrible weather!

 

[Dan Whitaker]

My trip to Jon's a couple of years ago netted me a 3 hour alignment by some crack head that had know idea what he was doing. We had to tell him how to align it and it was still wrong.

 

[CDW6212R]

Take your time with the thermostat install. It rests vertically like the 302, and it's very easy to have it slip down while you start the bolts.