overheating
Thread Starter
Advanced
Joined: Jan 2011
Posts: 58
Likes: 1
From: Victorville Ca
overheating
I have a 1988 vette that is over eating when I turn the ac on. I have changed the water pump, thermostat, main fan motor, radiator and drive belt. Even with the ac off it still runs hot 226+. Any ideas about why it would do that? 
Intermediate
Joined: Jun 2011
Posts: 44
Likes: 2
Hmmmmmmmm
The sender for the fan HAS to be ...either
Between Cylinders
1&3 ( 88 )
or
6&8 ( 84 ) on the head itself.
The ROUND connector is correct for the temp sender ( fan )Dark Green / White
The SPADE lug is for the temp sender (gauge)
Dark green
The one on the front of the manifold is for the cold start valve.
Keep looking... unless your problem is that the sender is MISSING and there is a plug in the head where the sender SHOULD go...
Do you have single or dual fans?
In you year there is a PUSHER fan mounted in FRONT of the A/C condenser have a look!
But, it was an OPTION!
AD
EDIT-----
The wire for the fan switch/senser is black it is a little difficult for me to see. I believe it branched out of the main loom since the computor has the settings for the fans to come on at pre set temps. It of course is a neg ground and works off resistance. If i remember right it is jacketed with the plastic wire loom when it comes out of the main bundle. Dont know if this helps . All the wires are tucked behind the block and firewall .
The sender for the fan HAS to be ...either
Between Cylinders
1&3 ( 88 )
or
6&8 ( 84 ) on the head itself.
The ROUND connector is correct for the temp sender ( fan )Dark Green / White
The SPADE lug is for the temp sender (gauge)
Dark green
The one on the front of the manifold is for the cold start valve.
Keep looking... unless your problem is that the sender is MISSING and there is a plug in the head where the sender SHOULD go...
Do you have single or dual fans?
In you year there is a PUSHER fan mounted in FRONT of the A/C condenser have a look!
But, it was an OPTION!
AD
EDIT-----
The wire for the fan switch/senser is black it is a little difficult for me to see. I believe it branched out of the main loom since the computor has the settings for the fans to come on at pre set temps. It of course is a neg ground and works off resistance. If i remember right it is jacketed with the plastic wire loom when it comes out of the main bundle. Dont know if this helps . All the wires are tucked behind the block and firewall .
Last edited by ad-01; Jul 27, 2011 at 09:39 AM.
Racer
Joined: Oct 2004
Posts: 309
Likes: 0
From: Grants Pass Oregon
Hmmmmmmmm
The sender for the fan HAS to be ...either
Between Cylinders
1&3 ( 88 )
or
6&8 ( 84 ) on the head itself.
The ROUND connector is correct for the temp sender ( fan )Dark Green / White
The SPADE lug is for the temp sender (gauge)
Dark green
The one on the front of the manifold is for the cold start valve.
Keep looking... unless your problem is that the sender is MISSING and there is a plug in the head where the sender SHOULD go...
Do you have single or dual fans?
In you year there is a PUSHER fan mounted in FRONT of the A/C condenser have a look!
But, it was an OPTION!
AD
EDIT-----
The wire for the fan switch/senser is black it is a little difficult for me to see. I believe it branched out of the main loom since the computor has the settings for the fans to come on at pre set temps. It of course is a neg ground and works off resistance. If i remember right it is jacketed with the plastic wire loom when it comes out of the main bundle. Dont know if this helps . All the wires are tucked behind the block and firewall .
The sender for the fan HAS to be ...either
Between Cylinders
1&3 ( 88 )
or
6&8 ( 84 ) on the head itself.
The ROUND connector is correct for the temp sender ( fan )Dark Green / White
The SPADE lug is for the temp sender (gauge)
Dark green
The one on the front of the manifold is for the cold start valve.
Keep looking... unless your problem is that the sender is MISSING and there is a plug in the head where the sender SHOULD go...
Do you have single or dual fans?
In you year there is a PUSHER fan mounted in FRONT of the A/C condenser have a look!
But, it was an OPTION!
AD
EDIT-----
The wire for the fan switch/senser is black it is a little difficult for me to see. I believe it branched out of the main loom since the computor has the settings for the fans to come on at pre set temps. It of course is a neg ground and works off resistance. If i remember right it is jacketed with the plastic wire loom when it comes out of the main bundle. Dont know if this helps . All the wires are tucked behind the block and firewall .
Huh?
Melting Slicks
Joined: May 2010
Posts: 2,082
Likes: 3
From: Conowingo Maryland
Hmmmmmmmm
The sender for the fan HAS to be ...either
Between Cylinders
1&3 ( 88 )
or
6&8 ( 84 ) on the head itself.
The ROUND connector is correct for the temp sender ( fan )Dark Green / White
The SPADE lug is for the temp sender (gauge)
Dark green
The one on the front of the manifold is for the cold start valve.
Keep looking... unless your problem is that the sender is MISSING and there is a plug in the head where the sender SHOULD go...
Do you have single or dual fans?
In you year there is a PUSHER fan mounted in FRONT of the A/C condenser have a look!
But, it was an OPTION!
AD
EDIT-----
The wire for the fan switch/senser is black it is a little difficult for me to see. I believe it branched out of the main loom since the computor has the settings for the fans to come on at pre set temps. It of course is a neg ground and works off resistance. If i remember right it is jacketed with the plastic wire loom when it comes out of the main bundle. Dont know if this helps . All the wires are tucked behind the block and firewall .
The sender for the fan HAS to be ...either
Between Cylinders
1&3 ( 88 )
or
6&8 ( 84 ) on the head itself.
The ROUND connector is correct for the temp sender ( fan )Dark Green / White
The SPADE lug is for the temp sender (gauge)
Dark green
The one on the front of the manifold is for the cold start valve.
Keep looking... unless your problem is that the sender is MISSING and there is a plug in the head where the sender SHOULD go...
Do you have single or dual fans?
In you year there is a PUSHER fan mounted in FRONT of the A/C condenser have a look!
But, it was an OPTION!
AD
EDIT-----
The wire for the fan switch/senser is black it is a little difficult for me to see. I believe it branched out of the main loom since the computor has the settings for the fans to come on at pre set temps. It of course is a neg ground and works off resistance. If i remember right it is jacketed with the plastic wire loom when it comes out of the main bundle. Dont know if this helps . All the wires are tucked behind the block and firewall .
