1990 Speedometer Help!!

wildbill85 · 07-26-2012, 02:56 PM

Hi, i have a 1990 c4 and need help with the speedometer, when you are driving the car the speedometer is sporatic and is jumping all over the place,one minute it is ok then it will strat jumping up and down from 50 miles to 10 miles per hour and back again. I have replaced everything i could think of but still have not found the problem. If any one can help me with this problem it would be very appreciated. Thanks Bill

vette82forme · 09-03-2012, 11:57 AM

probably the ecm's internal buffer if you didn't replace the vss sensor

07-26-2012, 02:56 PM	#1
wildbill85 Smokin Member Join Date: Nov 2010 Location: Seneca,IL Posts: 21 My Gallery	1990 Speedometer Help!! Hi, i have a 1990 c4 and need help with the speedometer, when you are driving the car the speedometer is sporatic and is jumping all over the place,one minute it is ok then it will strat jumping up and down from 50 miles to 10 miles per hour and back again. I have replaced everything i could think of but still have not found the problem. If any one can help me with this problem it would be very appreciated. Thanks Bill

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09-03-2012, 11:57 AM	#2
vette82forme Smokin 100HP Club Join Date: Sep 2012 Location: yucaipa,ca Posts: 182 My Gallery	probably the ecm's internal buffer if you didn't replace the vss sensor

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