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#1 |
Registered User
Join Date: Mar 2005
Location: columbia, SC
Posts: 31
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speedometer question
ever since ive owned my truck the speedometer hasnt worked and my dad is admiment about me getting it to work. I replaced both of the cables and it worked for maybe 5 min but bounced all around then quit. so i pulled out the nylon gear in the tranny and it is good. im thinking the only other thing is to get another speedometer from the scrapyard and try it out. or maybe bypass the cruise control and run one cable straight to the speedometer. any suggestions?
Thanks, curt also it had a 700r4 in it when i bought it and it didnt work, and still didnt work when i put a th350 in it. |
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#2 |
Registered User
Join Date: Nov 2003
Location: Superior CO
Posts: 32
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Yeah, when they bounce around it normally means the speedo is bad.
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'79 SWB 4x4 Scottsdale 350/4 speed '70 Nova 406/M20 4 speed '02 Subaru WRX wagon |
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#3 | |
Registered User
Join Date: Mar 2005
Location: columbia, SC
Posts: 31
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Quote:
curt |
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#4 |
Professional Beer Tester
Join Date: Aug 2004
Location: Louisiana
Posts: 453
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Curt, make sure your upper cable is locked firmly onto the speedmeter head, sometimes they are hard to lock in, you should hear a click when it locks in place. If that's OK, disconnect both cables from the cruise transducer, then stick a small screwdriver(like a pocket screwdriver) into the input side and turn it; it should turn easily without binding and the output should turn evenly with the input. If the transducer seems OK, try spining the cable going to the speedometer and watch the needle; the cable should spin freely and the needle should rise when you turn it. If both of those work OK, check to make sure the cable ends are long enough to reach the drives. I've seen the inner cables too short to reach the drive sockets. Hope that helps.
60-66 Nut
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60 Ford F100 Custom Cab 61 Apache Short Fleetside 64 C10 Short Stepside 65 C80 409 V8 5spd(X-Firetruck) 83 GMC 350 Olds Diesel 85 GMC Short Bed 86 GMC Short Bed 90 GMC R3500 Crew Cab 92 GMC 1500 |
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#5 |
75 STEPSIDE
Join Date: Mar 2005
Location: Suffolk, VA
Posts: 92
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I have seen the drive gear inside the tranny get worn out which will make your speedo jump. if you have a turbo 350 you can take off the tail cone and look at the gear, it should be straight accross.
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Pete 75 Chevy Stepside 70 Buick Skylark/GS |
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