89 lx 5.0 ho a/c trouble. +trans questions

L

LAWMAN_DA

New Member

Jul 5, 2006

4

0

0

Jul 17, 2006

#1

• Jul 17, 2006

• #1

when driving with a/c on under exeration when vacume signal is low the a/c defalts to the defrost. I have been chasing down vacume leaks. is this a commen selector switch problem? also this car has a auto 4 speed. under normal driving condition it shift out of first at 15 mph and out of secound at 25 mph and in to od at 40 mph luging all the way is this normal?

 

jrichker

StangNet's favorite TOOL

In Remembrance. Thank you for your contributions

Mar 10, 2000

27,512

2,813

234

Dublin GA

Jul 18, 2006

#2

• Jul 18, 2006

• #2

There is a check valve & reservoir in the A/C vacuum system that
holds vacuum when it drops off. That is the likely source of your
problem. It is a 25 cent sized black plastic fitting in a line that comes
from the vacuum tree. The normal mounting place is on the firewall,
above and behind the passenger side of the intake manifold.

 

L

LAWMAN_DA

New Member

Jul 5, 2006

4

0

0

Jul 18, 2006

#3

• Jul 18, 2006

• #3

THANK YOU so very much. I am excited now. soon as I get off work all cheek it out. and let you know how it went. thanks again

 

L

LAWMAN_DA

New Member

Jul 5, 2006

4

0

0

Jul 19, 2006

#4

• Jul 19, 2006

• #4

I checked it out and your right it's that check valve THANK YOU SO VERY MUCH.

 

L

LAWMAN_DA

New Member

Jul 5, 2006

4

0

0

Jul 22, 2006

#5

• Jul 22, 2006

• #5

I replaced the check valve and all is well. THANK YOU