kickdown switch
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Joined: Nov 2007
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kickdown switch
This is my problem, I have a 1976 with a Turbo 400 transmission. It doesnt leak and it shifts just fine. The issue is it wont downshift for passing. I have been told it is the electric kickdown switch which works off a switch located under the accellorater pedal and is located on the left side of the tranny. I have no access to a lift and wonder is this something a novice could do or should I take it to a shop.
Burning Brakes
Joined: Jun 2002
Posts: 837
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From: Texas
Could be wiring at the switch or solenoid and/or adjustment of the switch. The switch is way up under the dash and kinda hard to see.
Read through some of these from search:
http://forums.corvetteforum.com/sear...archid=8129770
Read through some of these from search:
http://forums.corvetteforum.com/sear...archid=8129770
Last edited by goinbroke; Apr 23, 2008 at 05:37 PM.
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Joined: Mar 2008
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Hy,
I have exactely the same problem with my 1975 and TH400. I did a post for it.
http://forums.corvetteforum.com/show...light=kickdown
I have no 12v on the orange wire wich go to the solenoid. I think is it because my tachometer is down. Does your Tach work fine or is down too?
I have exactely the same problem with my 1975 and TH400. I did a post for it.
http://forums.corvetteforum.com/show...light=kickdown
I have no 12v on the orange wire wich go to the solenoid. I think is it because my tachometer is down. Does your Tach work fine or is down too?
Team Owner
Joined: Jan 2006
Posts: 37,637
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From: Crossville TN
It depends on the 'defect' in the system. If it is the under-dash switch, then you can adjust and/or repair easily. But the tranny had a solenoid valve on the valve body (inside the tranny oil pan) which has to function, also. Use a voltmeter to see if your dash kickdown switch passes 12vdc to the tranny. If it does, the switch inside the tranny is bad. It is not difficult to change out (2 small bolts to mount it to the underside of the valve body), but you have to drop the pan. Maybe find a replacement solenoid valve and make the change the next time you change tranny fluid and filter.
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Joined: Nov 2007
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thanks a million guys. It sure makes a difference talking with people that been there, seen that and did that.
It depends on the 'defect' in the system. If it is the under-dash switch, then you can adjust and/or repair easily. But the tranny had a solenoid valve on the valve body (inside the tranny oil pan) which has to function, also. Use a voltmeter to see if your dash kickdown switch passes 12vdc to the tranny. If it does, the switch inside the tranny is bad. It is not difficult to change out (2 small bolts to mount it to the underside of the valve body), but you have to drop the pan. Maybe find a replacement solenoid valve and make the change the next time you change tranny fluid and filter.
