speedo problem - Ford Powerstroke Diesel Forum
 
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post #1 of 8 Old 04-12-2010, 11:34 AM Thread Starter
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speedo problem

hey guys, picked up and early 99 a couple days ago and on the ride home i noticed that the speedo only works when im doing over 60 km/h. and between 60 and 40 it bounces around sometimes?? any ideas whats causing this??? do i just need a new speedo cable or a new sensor??
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post #2 of 8 Old 04-12-2010, 11:43 AM
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It is probably the Vehicle Speed Sensor in the rear axle housing. It is mounted in the center / top of the housing with 2 wires going to it. Takes 5 min. to replace. To be sure if it bad, run the codes on it, the should be one for the VSS.

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post #3 of 8 Old 04-12-2010, 11:46 AM Thread Starter
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dont got a code reader, how much is the sensor worth ??
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post #4 of 8 Old 04-12-2010, 02:25 PM
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It isn't an expensive part, but try cleaning it first. Fixed mine.

Zach
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post #5 of 8 Old 04-12-2010, 04:26 PM
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Quote:
Originally Posted by hummer_maxxer View Post
dont got a code reader, how much is the sensor worth ??
I think mine was $15-20.

99 f 250 lariat 4x4 x-cab 7.3 --> SOLD
4" banks exhaust
AIS intake
zoodad mod
warn lockout hubs
285/75 16 Nitto Terra Grapplers
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post #6 of 8 Old 09-30-2010, 03:59 PM
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Mine just started doing this. Was reading 70 then dropped down to 60 then back up to 70. No check engine light showing so I wouldn't think it had codes in it.



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post #7 of 8 Old 10-01-2010, 04:59 AM
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just repalced mine, Ford $26

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post #8 of 8 Old 10-01-2010, 08:31 AM
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Easy to replace. If is isn't the sensor, it will go soon enough if you are doing any kind of driving that isn't on a perfect smooth road (I haven't found such a road in America yet).
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