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I have a 1978 corvette and the speedometer is not accurate and jumps around lot. any idea what is wrong with it.

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Posted on Jan 02, 2017

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SOURCE: SPEEDOMETER NEEDLE JUMPS UP AND DOWN BELOW

If someone before you bypassed the cruise control transducer and the cable goes directly from the transmission to the guage then the cable will be bent too much to work correctly. The car should have two cables. Once from the transmission to the transducer and then another from the transducer to the guage.

Posted on Mar 30, 2010

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SOURCE: 99 cavalier - the fuel gauge doesnt read accurately and it jumps

Possibly a bad ground wire at the sender on the tank,

Check for that first before tearing into the dash to replace the guage.

Posted on Mar 31, 2010

  • 1 Answer

SOURCE: 1994 toyota camry speedometer not working

speedometer works intermitently

Posted on Oct 07, 2010

  • 140 Answers

SOURCE: My 1991 Toyota 4WD 5

check speedo cable for tightness at both ends,1 on trans 1 back of dash.if tight replace the cable,they can bind or strstch in liner causing speedo bounce.

Posted on Feb 15, 2011

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My 1991 Toyota 4WD 5 Speed with 22Re Engine speedometer constantly bounces around a lot and I cant accurately read the speed of the truck


check speedo cable for tightness at both ends,1 on trans 1 back of dash.if tight replace the cable,they can bind or strstch in liner causing speedo bounce.

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99 cavalier - the fuel gauge doesnt read accurately and it jumps


Possibly a bad ground wire at the sender on the tank,

Check for that first before tearing into the dash to replace the guage.

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SPEEDOMETER NEEDLE JUMPS UP AND DOWN BELOW 25-31 MPH 1978 W/CRUISE CORVETTE C3


REmove speedo cable & inspect inner cable for frayed wire. If not frayed lube cable with graphite grease preferably or oil. replace cable. this should solve problem. If not replace cable.

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