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AC issue, shared in hopes it will help others

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grumpin

Re: AC issue, shared in hopes it will help others

“I can not run MAX AC as every little hill I come to it would go to defrost till I let off the gas.”

You have a vacuum leak?

Dane
1986 F250HD SC XLT Lariat 4x4 460 C6-Sold
1992 Bronco XLT 4x4 351W E4OD
1998 GMC Sierra SLE K1500 350 4L60E
Arizona

ArdWrknTrk

Re: AC issue, shared in hopes it will help others

Administrator

Maybe the check valve or vacuum motor diaphragm is leaking?

I do recall that Dave had patched the bottom of his vacuum reservoir with fiberglass.
Maybe it is starting to lose its grip on the metal can?
I'm sure those things flex when vacuum is pulled on them.

Not sure why having it blow out the defroster for a minute would make much difference overall.
But I don't have any AC. It can get pretty oppressive when I'm not moving.

Jim,
Lil'Red is a '87 F250 HD, 4.10's, 1356 4x4, Zf-5, 3G, PMGR, Saginaw PS, desmogged with a Holley 80508 and Performer intake.
Too much other stuff to mention.

Nemesis F150

Re: AC issue, shared in hopes it will help others

ArdWrknTrk wrote

Not sure why having it blow out the defroster for a minute would make much difference overall.
But I don't have any AC. It can get pretty oppressive when I'm not moving.

Its a trade-off. AC sucks horsepower so with out it you can move faster!

[edit: Mea Culpa! I couldn't help it.]

-= John =- 1985 F-150 EFI 302/5.0L dual tanks, long-wide bed, "heavy-half"

Machspeed

Re: AC issue, shared in hopes it will help others

Administrator

Took the truck out again today with an outside temperature of 86 degrees. I thought I had the fan on high but it was on the middle speed. Much improved temperature here that was rather uncomfortable. Looks like it's holding its refrigerant and cooling fine. Very pleased!

John

"Blackie" - 1986 F150 4x4 - Mildly warmed over 351W HO - Original owner

Gary Lewis

Re: AC issue, shared in hopes it will help others

Administrator

Good job, John!

Gary, AKA "Gary fellow": Profile

Dad's: '81 F150 Ranger XLT 4x4: Down for restomod: Full-roller "stroked 351M" w/Trick Flow heads & intake, EEC-V SEFI/E4OD/3.50 gears w/Kevlar clutches
Blue: 2015 F150 Platinum 4x4 SuperCrew wearing Blue Jeans & sporting a 3.5L EB & Max Tow
Big Blue: 1985 F250HD 4x4: 460/ZF5/3.55's, D60 w/Ox locker & 10.25 Sterling/Trutrac, Blue Top & Borgeson, & EEC-V MAF/SEFI