Newbe 87 tear down: need help
Thread Starter
Cruising
Joined: Sep 2009
Posts: 14
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From: El Segundo california
Newbe 87 tear down: need help
New member here:
New to Forums entirely:
I am not sure how to do this so I just will: 3 questions to anyone with C4 knowledge. I am tearing down a 87 c4 for a new clutch and got to the tranny.
I tried to first search TECH forums for this: Upon the removal of my "4+3" tranny to get to the clutch, I found the "front" electrical connection on the warner borge to be shorted out.
I have 2 shop manuals, and have searched on line, and cannot find out what the first, front, electrical plug into a sensor is.
There are 2 di-pole plugs with black and green wires which plug under the first and second shift linkages on the left side.
I think they are SPEED SENSORS, and need to order a new connector and sensor, before I can determine why the other one fried.
Now keeping in mind my father gave me this car with no clutch, so I have not been able to dirve yet: what is a "4+3" manual transmission ??? My father didn't know / didn't use it ??? I know Jerico's, really well (love those dog-rings), but never hear of 4+3.
Is there a manual out there which has FULLY labled diagrams of all C4 systems?: I have clarton and hanes (spelling) and they have one name in the diagram/picture and call it somthing eles in the discribtion.
Am I in the right place to post this?
Thanks
Jordan
New to Forums entirely:
I am not sure how to do this so I just will: 3 questions to anyone with C4 knowledge. I am tearing down a 87 c4 for a new clutch and got to the tranny.
I tried to first search TECH forums for this: Upon the removal of my "4+3" tranny to get to the clutch, I found the "front" electrical connection on the warner borge to be shorted out.
I have 2 shop manuals, and have searched on line, and cannot find out what the first, front, electrical plug into a sensor is.
There are 2 di-pole plugs with black and green wires which plug under the first and second shift linkages on the left side.
I think they are SPEED SENSORS, and need to order a new connector and sensor, before I can determine why the other one fried.
Now keeping in mind my father gave me this car with no clutch, so I have not been able to dirve yet: what is a "4+3" manual transmission ??? My father didn't know / didn't use it ??? I know Jerico's, really well (love those dog-rings), but never hear of 4+3.
Is there a manual out there which has FULLY labled diagrams of all C4 systems?: I have clarton and hanes (spelling) and they have one name in the diagram/picture and call it somthing eles in the discribtion.
Am I in the right place to post this?
Thanks
Jordan
Race Director
Joined: Feb 2003
Posts: 16,475
Likes: 270
From: Kingman AZ
Cruise-In VII Veteran
Cruise-In VIII
St. Jude Donor '06-'07-'08-'09-'10-'11-'12-'13-'14-'15-'16
Welcome Jordan! Here is one place to buy a Field Service Manual (FSM) that has everything you need:http://www.parts123.com/parts123/yb....~Z5Z5Z5~Z5Z5Z5
Here is a link to the 4+3:http://www.5speeds.com/dne.htm
Here is a link to the 4+3:http://www.5speeds.com/dne.htm
Race Director
Joined: Feb 2003
Posts: 16,475
Likes: 270
From: Kingman AZ
Cruise-In VII Veteran
Cruise-In VIII
St. Jude Donor '06-'07-'08-'09-'10-'11-'12-'13-'14-'15-'16
Whoops - first link is bad. Just go to www.half.com and go under books and type in "1987 Corvette Manual". This is a place to buy used books and is a part of Ebay.
One other source to use is www.corvetteguru.com
One of the owners of this site is Andy Bogus. He lives in Torrance and owns an 87 and a 92. The man has been under, in, and around the cars and knows his stuff. He is always willing to lend a hand.
Good luck!
One other source to use is www.corvetteguru.com
One of the owners of this site is Andy Bogus. He lives in Torrance and owns an 87 and a 92. The man has been under, in, and around the cars and knows his stuff. He is always willing to lend a hand.
Good luck!
Le Mans Master
Joined: Sep 2006
Posts: 6,050
Likes: 147
From: Phoenix AZ
2021 C4 of the Year - Modified Finalist
1. they are not speed sensors, they are switches that tell the computer which gear the transmission is in so that the overdrive program in the computer can function as designed.
2. switches just go bad from use and being in a hostile environment. (near the exhaust)
3. 4+3 means overdrive available in 2nd, 3rd, and 4th gears. so you have a 4 speed with 3 overdrive gears.
2. switches just go bad from use and being in a hostile environment. (near the exhaust)
3. 4+3 means overdrive available in 2nd, 3rd, and 4th gears. so you have a 4 speed with 3 overdrive gears.
