AC Cold but not Blowing - Air Trickle When Driving

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05-14-2022 | 09:55 AM

#11

greg8453

Senior Member

Joined: 03-29-2022

Posts: 1,100

From: Davison MI

Quote:

Originally Posted by WhoDat

Well the first problem that showed up months back, was that it would only blow on high.

That would be a failed resistor block.

Quote:

But I mentioned the issue with the AC only blowing at high before it ultimately shut off, in case that helps anyone diagnose the root of the problem based on what happened first.

So it will not blow at all? That has direct B+ which is why it only blows on high with a failed resistor block but to not run at all we need to check at the fuse.

Quote:

I do have a non-contact voltage tester pen (12V-1000V/48V-1000V). But I've only used that to diagnose issues with AC outlets in our home. I don't know enough about electrical diagnostics to know if it would even work for a vehicle.

Those will only work with AC.

This is a test light.