Underpowered Possible vacuum leak

[Scottydoggs]

your ac system is low. when low the compressor comes on and off.

sounds like a idler chirp. pull the belt, hand spin everything. if you dont see a belt diagram under the hood some where, take a pic of the belt on the truck. nothing like trying to figure out that puzzle lol

 

[Doubeleive]

Where would I hook that gauge up to and what would this tell me/ what psi reading should suggest normal range

you would need to check to verify psi for your vehicle mine was supposed to be 2.5psi max, it was reading 5 at idle and 10 with throttle
but the test is done thru the 02 sensor bung, (pre-cat)

 

[Angelo217]

your ac system is low. when low the compressor comes on and off.

sounds like a idler chirp. pull the belt, hand spin everything. if you dont see a belt diagram under the hood some where, take a pic of the belt on the truck. nothing like trying to figure out that puzzle lol

I know these gauges usually aren’t trusted but it actually said the system was slightly overfilled, one of those autozone cans. It’s just strange to me how the ac only starts acting up immediately when the check engine light comes on for the FTPS.

The ac will work fine for a straight month, and then check engine will come on and it acts up.

 

[Angelo217]

your ac system is low. when low the compressor comes on and off.

sounds like a idler chirp. pull the belt, hand spin everything. if you dont see a belt diagram under the hood some where, take a pic of the belt on the truck. nothing like trying to figure out that puzzle lol

Idler chirp would cause that whistling noise?

And I recently had the belt off doing the water pump 3 weeks ago, all them bearings up front sounded fine

 

[Doubeleive]

Idler chirp would cause that whistling noise?

And I recently had the belt off doing the water pump 3 weeks ago, all them bearings up front sounded fine

if the sound is not there with the belts off then it is something bolted on. use a stethascope