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| Willy |
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Hi All,
I've got a problem with the one I love... yes. My car. The speedo is over-reading 10 km/h, while the odometer is also over-reading by 10 km as well. The average km/h reading by the tripmeter is pure fiction - about half of what it should be. Any ideas of where the fault could be? My thoughts turn to the speedo sender unit. What does everyone think? Will
_________________ 1994 Black Pearl ED Fairmont V8 |
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| blueprinted |
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mine is the same but 20% overeads
been like that for 4 years i was going to get a j-car speedo adjuster once i get my new diff fitted i was also going to get the odo fixed by a gauge shop after that and take off about 20,000k's |
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| Willy |
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Hi All,
I was wondering last night if it could be because of my wheels - 17 inches with 235/45's. A mate of mine said his 20 inch wheels on his EB were causing an overead of 20 km/h. Any ideas? Will
_________________ 1994 Black Pearl ED Fairmont V8 |
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the 235/45r17 (643.3mm) are pretty much the same dia as 205/65r15s (647.5mm) so shouldn't be to much of a problem
20 i would imagine stuff it up i blamed it on dodgy digital speedo but my LTD with the same speedo seems to read correct |
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| madmax |
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Willy wrote: Hi All,
I was wondering last night if it could be because of my wheels - 17 inches with 235/45's. A mate of mine said his 20 inch wheels on his EB were causing an overead of 20 km/h. Any ideas? Will A 20k differance would require a huge differance in tyre size As blueprinted said. 235/45 would give you a speedo error of just 0.6% If your mates running 20s theen he would need a 275/20 or 235/30 to keep his speedo accurate. Your problem is likely to be the speedo drive or the speedo drive gear.
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| XR6 EF |
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mine is the same i put a fairmont cluster in to replace a broken xr6 one and now speedo is out, im guessing due to different diff ratio. is there a way to reset it?
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| madmax |
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Changing the cluster should not make any difference, unless the needle is in the wrong position at zero.
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| Shum's EL |
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20's on an EB... s**t hot
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