Topic: 1982 cruise control
in Forum: C3 Electrical
|UPDATED|1/29/2013 3:22:50 PM (AZT)|/UPDATED|
Lifetime Member #116
Dave's '82 
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And...to answer the actual question, NO, none of the sensors you pictured as for your vehicle...those are all Ford sensors, that go into the trans.
|UPDATED|2/8/2013 11:25:31 AM (AZT)|/UPDATED|
Joel Adams
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"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"
The transducer is the speed sensor. It is driven by the speedo cable and converts the rotation of the cable into an electrical value that is proportional to the speed. The transducer then regulates vacuum to the servo. I don't know what kind of problem you are having, but have replaced alot of transducers in my day. Make sure your vacuum lines are good to the transducer and the servo holds vacuum.
Hope this helps!
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Joel Adams
C3VR Lifetime Member #56
My Link
(click for Texas-sized view!) NCRS
"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"
Subject: Vehicle Speed Sensor Servicing
Model and Year: 1981 Corvettes
Source: Chevrolet Dealer Service Information Bulletin
Bulletin Number: 81-I-17
Section: VIt
Date: January, 1981
TO: ALL CHEVROLET DEALERS
Beginning with the 1980 1/2 model year pull-ahead program, the speedometers of the car lines listed in the chart below [Corvette included - CAC Staff] will be equipped with an optical vehicle speed sensor (VSS). The VSS will furnish data to the ECM for activating the torque converter clutch and for influencing the Computer Command Control idle speed control system.
To diagnose and service this VSS speedometer system, code 24 of the Computer Command Control should be performed as follows:
- With ignition on, engine off, probe pin #16 of the ECM with a voltmeter. Raise one wheel and rotate to observe for varying voltage.
- If no variation is observed, the connection between the IP harness and VSS buffer amplifier must be disconnected. Then pin to pin voltage checks can be made of the IP harness connector to determine any problems with the IP harness.
- If OK, check VSS connector.
- If OK, replace VSS assembly.
- If condition persists, the speedometer must be returned to an AC-Delco account authorized to repair speedometers equipped with VSS. To insure proper speedometer repair specify in the "nature of Problem" area on AC-Delco warranty claim form ACD-1078 "Code 24 VSS Problem."
Lifetime MemberModerator
Subject: Vehicle Speed Sensor Servicing
Model and Year: 1981 Corvettes
Source: Chevrolet Dealer Service Information Bulletin
Bulletin Number: 81-I-17
Section: VIt
Date: January, 1981
TO: ALL CHEVROLET DEALERS
Beginning with the 1980 1/2 model year pull-ahead program, the speedometers of the car lines listed in the chart below [Corvette included - CAC Staff] will be equipped with an optical vehicle speed sensor (VSS). The VSS will furnish data to the ECM for activating the torque converter clutch and for influencing the Computer Command Control idle speed control system.
From what I read, this particular sensor is NOT part of the cruise control system...it is only an input to the ECM for the TCC and idle speed. It is apparently just a "piggyback" running off of the actual speedo cable coming from the cruise transducer. At least, that's how I read it. I need to get the Service manual and check it out....Thanks Bob!
Joel Adams
C3VR Lifetime Member #56
My Link
(click for Texas-sized view!) NCRS
"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"