Air conditioning cump keeps running

DaveR_GT · 08-25-2001, 05:57 PM

With the air turned off, the pump kicks on and off. What could cause this?

It doesn't blow real cold air when it is on. Could low referigerant cause the pump to run?

Thanks

------------------
'92 GT conv.
TFS heads, GT40, Powerdyne 9#, AOD, 3.73
My Mustang Page

Old Guy with 87 GT · 08-26-2001, 07:26 AM

low refrigarant won't cause it to run,just won't work as good(if frigarant gets to low it will mess up compresser though)

if the defroster or mix setting is on the compressor will run....might be it,if not you can just unplug compesser.....won't run

------------------
i'm really a not so old guy with 87 gt.......87gt,T top -169,000 on odometer-14.7 qt.m/80 capri(future project)

DaveR_GT · 08-26-2001, 08:07 AM

It runs in the off position.

I did unplug it.

But in normal usage, what is it that causes the pump to engage? Is it refrigerant pressure? tempature? I'm wondering if there is some kind of sensor or relay somewhere that could be malfunctioning.

------------------
'92 GT conv.
TFS heads, GT40, Powerdyne 9#, AOD, 3.73
My Mustang Page

WADS56 · 08-27-2001, 02:18 AM

My 93lx is doing the same thing. Maybe it's normal.

------------------
NA 347 W/ stage 2 Canfield heads, out of the box Victor 5.0 intake, solid roller cam, Aeromotive fuel system, proshifted TKO II.
MY CAR http://www.mustangworks.com/cgi-bin/...splay.cgi?1288

Maroon 5.0 LX · 08-27-2001, 08:32 AM

Is it possible your control is in the defrost mode?

------------------
'89 LX 5.0 - 5 speed. Original Owner
'94 E-150 4.9 Conversion Van

08-25-2001, 05:57 PM	#1
DaveR_GT Registered Member Join Date: Apr 2001 Location: W. Springfield, PA Posts: 65	Air conditioning cump keeps running With the air turned off, the pump kicks on and off. What could cause this? It doesn't blow real cold air when it is on. Could low referigerant cause the pump to run? Thanks ------------------ '92 GT conv. TFS heads, GT40, Powerdyne 9#, AOD, 3.73 My Mustang Page

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Car running lean, any suggestions?	MATTKNIGHT	Windsor Power	10	03-08-2009 03:52 PM
air conditioning problems	lil drummer boy	Modular Madness	2	04-28-2004 10:26 PM
My friend is Running WAY lean	TMASTER	Windsor Power	5	07-13-2003 09:41 PM
Fuel pump will not stop running	MustangGT1990	Windsor Power	7	01-29-2003 10:41 PM
Car's running hot...	Sonics2042	Windsor Power	8	07-16-2002 04:50 PM

08-26-2001, 07:26 AM	#2
Old Guy with 87 GT Registered Member Join Date: May 2001 Location: Harrisburg, Pennsylvania Posts: 379	low refrigarant won't cause it to run,just won't work as good(if frigarant gets to low it will mess up compresser though) if the defroster or mix setting is on the compressor will run....might be it,if not you can just unplug compesser.....won't run ------------------ i'm really a not so old guy with 87 gt.......87gt,T top -169,000 on odometer-14.7 qt.m/80 capri(future project)

08-26-2001, 08:07 AM	#3
DaveR_GT Registered Member Join Date: Apr 2001 Location: W. Springfield, PA Posts: 65	It runs in the off position. I did unplug it. But in normal usage, what is it that causes the pump to engage? Is it refrigerant pressure? tempature? I'm wondering if there is some kind of sensor or relay somewhere that could be malfunctioning. ------------------ '92 GT conv. TFS heads, GT40, Powerdyne 9#, AOD, 3.73 My Mustang Page

08-27-2001, 02:18 AM	#4
WADS56 gear banger Join Date: Aug 2000 Location: CHICAGO Posts: 1,144	My 93lx is doing the same thing. Maybe it's normal. ------------------ NA 347 W/ stage 2 Canfield heads, out of the box Victor 5.0 intake, solid roller cam, Aeromotive fuel system, proshifted TKO II. MY CAR http://www.mustangworks.com/cgi-bin/...splay.cgi?1288

08-27-2001, 08:32 AM	#5
Maroon 5.0 LX Registered Member Join Date: Mar 2001 Location: Southern Maryland Posts: 471	Is it possible your control is in the defrost mode? ------------------ '89 LX 5.0 - 5 speed. Original Owner '94 E-150 4.9 Conversion Van