90 corvette lost speedometer and will not downshift when you go full throttle
10-21-2010, 01:35 PM
#1
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90 corvette lost speedometer and will not downshift when you go full throttle
90 will not downshift, checked kickdown cable, its ok, but lost speedometer at the same time, is it the speed sensor and /or loose wire , does that sensor govern the tranny shiftpoints?, how hard to change? where to get a new one?
10-21-2010, 06:12 PM
#2
Instructor
The only thing that the speed sensor does for your transmission would be contol your TCC Torque Converter Clutch and it is possable that is what you are describing.
Last edited by C4happy; 10-21-2010 at 06:13 PM. Reason: Type error
10-21-2010, 07:29 PM
#3
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St. Jude Donor '09-'10, '14
first do you have any codes?
Second the speed sensor wires got eaten by a mouse on my dodge ram. I got a light and it did effect my shifting. Repaired the wires and all is good to go.
So that is a place to start IMO.
I would think you can get a speed sensor at most parts stores. Not sure where it is on a vette but on my PU it was on the drivers side of the tranny towards the front.
Second the speed sensor wires got eaten by a mouse on my dodge ram. I got a light and it did effect my shifting. Repaired the wires and all is good to go.
So that is a place to start IMO.
I would think you can get a speed sensor at most parts stores. Not sure where it is on a vette but on my PU it was on the drivers side of the tranny towards the front.
10-22-2010, 12:22 PM
#4
Instructor
Kim90 your 90 corvette has a 700R4 it uses a govener that controls your shifting in your transmission then the car starts moving the gov is driven by a gear and starts spinning it acts like a volume **** on you raido with hydrolic pressure the faster you go the more pressure it sends to your shift valves your shift valves has springs that fight the gov pressure so when your gov has enought pressure to over come the springs and the TV (throddle Valve) pressure it shifts to the next gear your only electronic valve in your transmission is a TCC soilanod
The dodge (RetiredSFC97) has, I am assuming it is a electronic shift transmission like the 4L60E that is in the LT1 cars
I am sorry my spelling isn't good but my mechainic skills are I hope you fix your speedo soon and I am sure that it will fix your TCC problem
The dodge (RetiredSFC97) has, I am assuming it is a electronic shift transmission like the 4L60E that is in the LT1 cars
I am sorry my spelling isn't good but my mechainic skills are I hope you fix your speedo soon and I am sure that it will fix your TCC problem
Last edited by C4happy; 10-22-2010 at 12:24 PM. Reason: you to your spelling not my strong sute
10-22-2010, 12:42 PM
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St. Jude Donor '09-'10, '14
Kim90 your 90 corvette has a 700R4 it uses a govener that controls your shifting in your transmission then the car starts moving the gov is driven by a gear and starts spinning it acts like a volume **** on you raido with hydrolic pressure the faster you go the more pressure it sends to your shift valves your shift valves has springs that fight the gov pressure so when your gov has enought pressure to over come the springs and the TV (throddle Valve) pressure it shifts to the next gear your only electronic valve in your transmission is a TCC soilanod
The dodge (RetiredSFC97) has, I am assuming it is a electronic shift transmission like the 4L60E that is in the LT1 cars
I am sorry my spelling isn't good but my mechainic skills are I hope you fix your speedo soon and I am sure that it will fix your TCC problem
The dodge (RetiredSFC97) has, I am assuming it is a electronic shift transmission like the 4L60E that is in the LT1 cars
I am sorry my spelling isn't good but my mechainic skills are I hope you fix your speedo soon and I am sure that it will fix your TCC problem
10-22-2010, 01:02 PM
#7
Instructor
it shouldn't be hard to fix if you can get to it,( lift or ramps) but be carefull anytime you are under something that can crush you safty is a must. If you are using ramps don't trust your parking pal used e brake and chalk your tires, your car can run over you and will.
10-22-2010, 01:12 PM
#8
Instructor
Autozone has it but I would recomend AC delco if it is avable?
2008, 90, c4, called, corvette, downshifting, find, full, sensor, speed, speedmeter, speedo, speedometer, throttle, transmission, vss, working
