AC problem

Reply Subscribe

Thread Tools

Search this Thread

May 5, 2013 | 12:36 PM

SuperXJ2000

Thread Starter

Junior Member

Joined: Jul 2011

Posts: 99

Likes: 1

From: Jacksonville NC

Year: 1999

Model: Cherokee

Engine: 4.0

AC problem

AC system unexpectedly switch to the defrost mode when accelerating. im thinking its the check valve, what do yall think.

May 5, 2013 | 02:21 PM

rayos-x

Junior Member

Joined: Oct 2012

Posts: 44

Likes: 0

Model: Cherokee

or just a vacuum leak...

May 5, 2013 | 11:01 PM

Radi

CF Veteran

Joined: Apr 2012

Posts: 5,302

Likes: 23

From: Wisconsin

Model: Cherokee

If it temporarily goes to defrost while accelerating, it's a check valve. When the system loses vacuum it defaults to defrost, when you accelerate you lose vacuum unless there is a check valve to retain it.

May 6, 2013 | 12:43 AM

SuperXJ2000

Thread Starter

Junior Member

Joined: Jul 2011

Posts: 99

Likes: 1

From: Jacksonville NC

Year: 1999

Model: Cherokee

Engine: 4.0

Yea it end up being the check valve at the intake. Thanks for the info guys

Reply Subscribe

Related Topics

Thread

Thread Starter

Forum

Replies

Last Post

AW4 P0753 issue heat related

Psiegrist1

Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here

Mar 17, 2022 02:15 PM

back wheels jerk at tight turns. new to zj's

2heapjeeps

Stock Grand Cherokee Tech. All ZJ/WJ/WK Non-modified/stock questions go here!

Oct 4, 2015 10:52 PM

no respoded in grand cherokee zone

2heapjeeps

Stock Grand Cherokee Tech. All ZJ/WJ/WK Non-modified/stock questions go here!

Sep 7, 2015 11:30 PM

Engine problems

cbowl

Cherokee Chat

Sep 4, 2015 01:56 PM

Jeep cherokee 1994 starting problem

Jeepy11

Stock Grand Cherokee Tech. All ZJ/WJ/WK Non-modified/stock questions go here!

Sep 3, 2015 09:32 AM

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)

Reply Share

First
Prev
1 / 1
Next
Last