Quote Originally Posted by cmiller View Post
Has anyone found a fix to keeping the AC cold when idling?

When my 2018 sits for even a minute the AC seems to disappear.

I've tried bumping the idle up manually with negative results.

As soon as the truck starts moving, it goes right back to frosty.
Quote Originally Posted by SyN View Post
(Possibly) might not have gotten a full charge coming off of the line.

Take it to your stealership & Have it checked or if you possess the proper A/C tools - check youself.

I've had a couple of autos do the same thing over the years - in stop & go traffic we would sweat our &%$#@ off - but after getting going again @ highway speeds it would freeze us out... Getting that airflow across the condenser fins was the ticket!

One was actually low on R34.
Quote Originally Posted by InlineSix.7 View Post
I had the same issue and it ended up being the fan clutch.

Recommend going with OEM parts on this.

@Geno's Garage sells a wrench that’s very helpful as well.


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Quote Originally Posted by cmiller View Post
UPDATE, service done, it's the viscous fan clutch, they found a very small leak, it's going to be replaced under warranty.

I asked if I bumped the idle all the way up, 1500 rpms, which I hadn't gone that high, would it work.

They said maybe, haven't tried it yet.

As said, if the air isn't moving over the condensor, bumping the idle won't do anything.

It could actually damage the compressor from overheating.

Yup, it can happen.

I love having electric fans.

Always frosty in the cab, even in this 100* weather we've been getting.