2 issues
Thread Starter
Intermediate
Joined: Jul 2011
Posts: 31
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From: Zernovka
2 issues
Hello
I have two problems in my C3 1973 and I was wondering if anybody would help me fixing them.
1. I have small block with AC. Fan speed switch does not operate correctly. In MAX fan speed position - it is actually OFF and when it is supposed to be OFF it is in its "first gear". I purchased this car when AC was disconnected and put it back in - I think there is something wrong in wiring. I remember reading about exactly same issue some time ago but I am not able to locate it in this forum anymore.
2. Does anybody have working parking brake? When I say working I mean I can actually use it in curves to slide car in correct direction. If I need to park my car I use first gear but I need it while driving.... is there any replacement to original brake?
Regards!
I have two problems in my C3 1973 and I was wondering if anybody would help me fixing them.
1. I have small block with AC. Fan speed switch does not operate correctly. In MAX fan speed position - it is actually OFF and when it is supposed to be OFF it is in its "first gear". I purchased this car when AC was disconnected and put it back in - I think there is something wrong in wiring. I remember reading about exactly same issue some time ago but I am not able to locate it in this forum anymore.
2. Does anybody have working parking brake? When I say working I mean I can actually use it in curves to slide car in correct direction. If I need to park my car I use first gear but I need it while driving.... is there any replacement to original brake?
Regards!
Melting Slicks
Joined: Jul 2010
Posts: 2,503
Likes: 33
From: McGrady NC
St. Jude Donor '15-'16
1: Check the wiring at the fan switch and at the resistor under the hood. Something is backwards or the resistor is shorted out.
2: Corvette parking brakes work good when they work. If the cables are not frozen and if the hardware inside the rear brake hats are still working and adjusted correctly, then you should be able to do what you need to do. Otherwise, plan on replacing the parking brake assemblies and cables. Do it all. BTW, replacing the parking brake assemblies is a real PITA!
2: Corvette parking brakes work good when they work. If the cables are not frozen and if the hardware inside the rear brake hats are still working and adjusted correctly, then you should be able to do what you need to do. Otherwise, plan on replacing the parking brake assemblies and cables. Do it all. BTW, replacing the parking brake assemblies is a real PITA!
Le Mans Master
Joined: Jan 2006
Posts: 6,499
Likes: 137
From: Butler Pa
Seriously?
Safety Car
Joined: Oct 2000
Posts: 3,547
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From: Carbondale Pa.
Le Mans Master
Joined: Jan 2000
Posts: 8,918
Likes: 27
From: New Hill NC
Probably actually not anything wrong with the switch. Here is the way it normally works. OFF the fan is on low all of the time. Then it works in steps up to high, but on an AC car the MAX goes through another circuit. So see its really working correctly except the MAX is not coming on. Go looking for the MAX air power.
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Le Mans Master
Joined: Aug 2006
Posts: 7,411
Likes: 1,550
From: mount holly NC
2025 c3 ('74-'82) of the Year Finalist - Unmodified
2019 C3 of Year Finalist (appearance mods)
High speed fuse.
Check this fuse. It should be on the inside of the drivers fender near the master cylinder.
Advanced
Joined: Jul 2007
Posts: 72
Likes: 2
I would suspect a blown high speed blower relay if the previously mentioned fuse is ok. The relay is mounted on the right side of the engine compartment on the a/c housing. You can sometimes open up the relay and file the relay points and get it working again or purchase a replacement relay.
Safety Car
Joined: May 2008
Posts: 3,745
Likes: 712
From: Lafayette Louisiana
good to know and thanks!
Probably actually not anything wrong with the switch. Here is the way it normally works. OFF the fan is on low all of the time. Then it works in steps up to high, but on an AC car the MAX goes through another circuit. So see its really working correctly except the MAX is not coming on. Go looking for the MAX air power.
Thread Starter
Intermediate
Joined: Jul 2011
Posts: 31
Likes: 0
From: Zernovka
1: Check the wiring at the fan switch and at the resistor under the hood. Something is backwards or the resistor is shorted out.
2: Corvette parking brakes work good when they work. If the cables are not frozen and if the hardware inside the rear brake hats are still working and adjusted correctly, then you should be able to do what you need to do. Otherwise, plan on replacing the parking brake assemblies and cables. Do it all. BTW, replacing the parking brake assemblies is a real PITA!
2: Corvette parking brakes work good when they work. If the cables are not frozen and if the hardware inside the rear brake hats are still working and adjusted correctly, then you should be able to do what you need to do. Otherwise, plan on replacing the parking brake assemblies and cables. Do it all. BTW, replacing the parking brake assemblies is a real PITA!
It is good to know that somebody has parking brake working correctly. I have managed to get it to the point when it works if car is parked but is has very little effect while C3 is moving. I will get back to this again.
Thread Starter
Intermediate
Joined: Jul 2011
Posts: 31
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From: Zernovka
Probably actually not anything wrong with the switch. Here is the way it normally works. OFF the fan is on low all of the time. Then it works in steps up to high, but on an AC car the MAX goes through another circuit. So see its really working correctly except the MAX is not coming on. Go looking for the MAX air power.
Thread Starter
Intermediate
Joined: Jul 2011
Posts: 31
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From: Zernovka
But seriously this car is for show and I take it to speedway. I have changed rear suspension a bit (light monospring, new wheels and tires) to be able to do it. Anyway if you have not tried to block rear wheels while making a turn - you miss a lot of fun. (Do not worry I am in Florida every year
)
Team Owner
Joined: Sep 2006
Posts: 31,111
Likes: 4,174
From: Westminster Maryland
Hi p,
The 'Parking Brake' was just that. It wasn't designed or intended to slow the car down while it was moving. I'd think that's why you're finding it not too effective for what you're using it for.
Regards,
Alan
The 'Parking Brake' was just that. It wasn't designed or intended to slow the car down while it was moving. I'd think that's why you're finding it not too effective for what you're using it for.
Regards,
Alan
Thread Starter
Intermediate
Joined: Jul 2011
Posts: 31
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From: Zernovka
Thread Starter
Intermediate
Joined: Jul 2011
Posts: 31
Likes: 0
From: Zernovka
Probably actually not anything wrong with the switch. Here is the way it normally works. OFF the fan is on low all of the time. Then it works in steps up to high, but on an AC car the MAX goes through another circuit. So see its really working correctly except the MAX is not coming on. Go looking for the MAX air power.
