Why is this ground point cut off?
Thread Starter
Instructor
Joined: May 2007
Posts: 109
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From: Ostersund (Sweden)
Why is this ground point cut off?
This is on the left side near the fans of my 1991 Automatic. It looks like it's cut off and not worn off. Do you know what it is and why anyone would cut it off?
I've had an overheating problem with my engine recently..
http://tills.nu/vette/cutgroundcable/brokenground.JPG
I've had an overheating problem with my engine recently..
http://tills.nu/vette/cutgroundcable/brokenground.JPG
Melting Slicks
Joined: May 2007
Posts: 2,171
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From: Warwick RI
Le Mans Master
Joined: Dec 2004
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From: Myrtle Beach SC
St. Jude Donor '05-'06
It is common for those ring connector to break at that point after someone bends or over torques them. It weakens them and they give. Reconnect it to the obvious spot.
Melting Slicks
Joined: May 2007
Posts: 2,171
Likes: 1
From: Warwick RI
??
Optional HD or secondary fans? I never knew that, on my 91 one is for primary and one is for the secondary.
Where did you get this info?
Thread Starter
Instructor
Joined: May 2007
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From: Ostersund (Sweden)
Hehe, yes It's obvious it goes to that washer but I want to know what it's there for..
edit: I love your picture
thanks for your input!
Last edited by edwardpayne; Aug 18, 2008 at 03:11 PM.
Thread Starter
Instructor
Joined: May 2007
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From: Ostersund (Sweden)
Could this cable be for the secondary fan or something? Or perhaps this ground point would be for both relays?
Last edited by edwardpayne; Aug 18, 2008 at 03:06 PM.
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Racer
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From: Concord CA
IROC57, I don't have the Secondary Fan on my C4 either..
I found this out by looking at the wiring drawing and by searching on the forum's... Not all came with the optional Secondary fan. The fan relay are on the driver side on the Radiator support with the secondary fan being in Front of the Radiator/Condensor.
Here is one thread that will explain it (I won't have to re-write the information.
http://forums.corvetteforum.com/show...condary+c4+fan
If I am wrong about anything, Don't worry, someone will slam me about it LOL...
I found this out by looking at the wiring drawing and by searching on the forum's... Not all came with the optional Secondary fan. The fan relay are on the driver side on the Radiator support with the secondary fan being in Front of the Radiator/Condensor.
Here is one thread that will explain it (I won't have to re-write the information.
http://forums.corvetteforum.com/show...condary+c4+fan
If I am wrong about anything, Don't worry, someone will slam me about it LOL...
Last edited by bczee; Aug 18, 2008 at 05:06 PM.
Le Mans Master
Joined: Jul 2007
Posts: 5,043
Likes: 8
From: Tampa Florida
This is on the left side near the fans of my 1991 Automatic. It looks like it's cut off and not worn off. Do you know what it is and why anyone would cut it off?
I've had an overheating problem with my engine recently..
http://tills.nu/vette/cutgroundcable/brokenground.JPG
I've had an overheating problem with my engine recently..
http://tills.nu/vette/cutgroundcable/brokenground.JPG
Pro
Joined: May 2006
Posts: 637
Likes: 0
This is on the left side near the fans of my 1991 Automatic. It looks like it's cut off and not worn off. Do you know what it is and why anyone would cut it off?
I've had an overheating problem with my engine recently..
http://tills.nu/vette/cutgroundcable/brokenground.JPG
I've had an overheating problem with my engine recently..
http://tills.nu/vette/cutgroundcable/brokenground.JPG
Melting Slicks
Joined: May 2007
Posts: 2,171
Likes: 1
From: Warwick RI
IROC57, I don't have the Secondary Fan on my C4 either..
I found this out by looking at the wiring drawing and by searching on the forum's... Not all came with the optional Secondary fan. The fan relay are on the driver side on the Radiator support with the secondary fan being in Front of the Radiator/Condensor.
Here is one thread that will explain it (I won't have to re-write the information.
http://forums.corvetteforum.com/show...condary+c4+fan
If I am wrong about anything, Don't worry, someone will slam me about it LOL...
I found this out by looking at the wiring drawing and by searching on the forum's... Not all came with the optional Secondary fan. The fan relay are on the driver side on the Radiator support with the secondary fan being in Front of the Radiator/Condensor.
Here is one thread that will explain it (I won't have to re-write the information.
http://forums.corvetteforum.com/show...condary+c4+fan
If I am wrong about anything, Don't worry, someone will slam me about it LOL...
The primary is the upper, secondary is the lower fan. The two relays in the picture control these fans. There is a pusher fan that I can be installed up front but I thought that was only aftermarket. I didn't realize it was available factory.
Thread Starter
Instructor
Joined: May 2007
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From: Ostersund (Sweden)
I will check out my ´91 aut. tomorrow and see if I have that wire there. Mine is identical to yours I guess. What vin. no. do you have on yours? Mine is 1G1YY2383M5100085. I think it´s built late 1990- early 1991.
Pro
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No such wire in that spot on my ´91, but on the same frame rail like 10 inch/25 cm to the rrear I found a factory ground screw with three wires on it. And looking at your picture it isn´t coming from the relay either but from the wiring harness that goes below it. Water started boiling? What exactly happened?
Temp on gauge to high?
Loss of water?
Temp on gauge to high?
Loss of water?
Thread Starter
Instructor
Joined: May 2007
Posts: 109
Likes: 0
From: Ostersund (Sweden)
No such wire in that spot on my ´91, but on the same frame rail like 10 inch/25 cm to the rrear I found a factory ground screw with three wires on it. And looking at your picture it isn´t coming from the relay either but from the wiring harness that goes below it. Water started boiling? What exactly happened?
Temp on gauge to high?
Loss of water?
Temp on gauge to high?
Loss of water?
Stopped the car and heard the water boiling.. In fear of a blown head gasket and called the tow truck.
I'm going to the car today and I will look exactly where that ground cable goes.. I just have the picture for the moment because the car is at the shop. The mechanic couldn't find any indications of a blown head gasket - lucky me!
edit: no loss of water
Last edited by edwardpayne; Aug 19, 2008 at 05:22 AM.
Pro
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Just driving the highway in 90Km/h a rainy day, no hard driving at all. The car was complaining about Low Coolant so I stopped at a gas station to fill it up but it was already full. 40Km later I felt the AC blowing really cold air so I took a look at the temp gauge and it was near the max point.
Stopped the car and heard the water boiling.. In fear of a blown head gasket and called the tow truck.
I'm going to the car today and I will look exactly where that ground cable goes.. I just have the picture for the moment because the car is at the shop. The mechanic couldn't find any indications of a blown head gasket - lucky me!
edit: no loss of water
Stopped the car and heard the water boiling.. In fear of a blown head gasket and called the tow truck.
I'm going to the car today and I will look exactly where that ground cable goes.. I just have the picture for the moment because the car is at the shop. The mechanic couldn't find any indications of a blown head gasket - lucky me!
edit: no loss of water
Hot engine in our climate here in Sweden.
1 Possible that the thermostat is stuck in closed position.
2 Check the AC system.
Push and hold the fan upp and down buttons for 6 seconds, it will show -00.
Push the auto fan button (in the middle).
It will show any fault codes.
00 No system faults.
01 Temperature door motor circuit fault.
02 Same as 01.
03 Ambient sensor open.
04 Ambient sensor short.
05 In-vehicle temperature sensor open.
06 In-vehicle temperature sensor short.
07 Solar load sensor open.
08 Solar load sensor short.
09 Low freon detected.
10 UART failure.
If the mechanic disconnected the battery then it will probably show 00.
Thread Starter
Instructor
Joined: May 2007
Posts: 109
Likes: 0
From: Ostersund (Sweden)
Hot engine in our climate here in Sweden.
1 Possible that the thermostat is stuck in closed position.
2 Check the AC system.
Push and hold the fan upp and down buttons for 6 seconds, it will show -00.
Push the auto fan button (in the middle).
It will show any fault codes.
00 No system faults.
01 Temperature door motor circuit fault.
02 Same as 01.
03 Ambient sensor open.
04 Ambient sensor short.
05 In-vehicle temperature sensor open.
06 In-vehicle temperature sensor short.
07 Solar load sensor open.
08 Solar load sensor short.
09 Low freon detected.
10 UART failure.
If the mechanic disconnected the battery then it will probably show 00.
1 Possible that the thermostat is stuck in closed position.
2 Check the AC system.
Push and hold the fan upp and down buttons for 6 seconds, it will show -00.
Push the auto fan button (in the middle).
It will show any fault codes.
00 No system faults.
01 Temperature door motor circuit fault.
02 Same as 01.
03 Ambient sensor open.
04 Ambient sensor short.
05 In-vehicle temperature sensor open.
06 In-vehicle temperature sensor short.
07 Solar load sensor open.
08 Solar load sensor short.
09 Low freon detected.
10 UART failure.
If the mechanic disconnected the battery then it will probably show 00.
I just went to get the car so I can do the search for myself. His final thought was a bad relay, because when he started the car the fan started directly even if the AC was off from the start. He gave the relay a hit and the fan stopped.
Can I check if the relay is bad or just failing sometimes? The temperature went up high on the parking lot and after a while the primary fan started.
I double checked the water level in the expansion reservoar and it was almost empty in there, just a little on the bottom. My thought is that I need to "burp" the system as many are talking about here on the forum, but I've never tried it.
Last edited by edwardpayne; Aug 19, 2008 at 08:47 AM.
Pro
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Yes the battery has been disconnected so it showed 00.
I just went to get the car so I can do the search for myself. His final thought was a bad relay, because when he started the car the fan started directly even if the AC was off from the start. He gave the relay a hit and the fan stopped.
Can I check if the relay is bad or just failing sometimes? The temperature went up high on the parking lot and after a while the primary fan started.
I double checked the water level in the expansion reservoar and it was almost empty in there, just a little on the bottom. My thought is that I need to "burp" the system as many are talking about here on the forum, but I've never tried it.
I just went to get the car so I can do the search for myself. His final thought was a bad relay, because when he started the car the fan started directly even if the AC was off from the start. He gave the relay a hit and the fan stopped.
Can I check if the relay is bad or just failing sometimes? The temperature went up high on the parking lot and after a while the primary fan started.
I double checked the water level in the expansion reservoar and it was almost empty in there, just a little on the bottom. My thought is that I need to "burp" the system as many are talking about here on the forum, but I've never tried it.
Just checked in my FSM, and there are some air bleed screws on the L98.
One on the right side between the pressure tank and the right intake-runner, second is in the right-upper-radiator-corner (a hose and an access plug).
Last edited by vette079; Aug 19, 2008 at 09:52 AM.
Thread Starter
Instructor
Joined: May 2007
Posts: 109
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From: Ostersund (Sweden)