speedometer reading off

jmey · 09-16-2007, 05:40 PM

My speedometer on my 1984 subaru with a manual transmission reads 125 mph at all speeeds it drops to 0 mph when car is stopped. Is this a problem with the cable or gauge?

**qldit** · 09-17-2007, 08:25 AM

Good Morning jmey, that kind of problem is normally caused by the "drag cups" in the speedometer itself, the spinning drive bearings get dry and run a little eccentrically. Sometimes a few drops of oil in the actual mechanism bearings will fix it.
Check that the flex drive cable isn't pre-loading the indicator or bent close to the indicator. (nice and straight and not too tight)

It is quite a job to get access to get some oil into them, you might get another from a suitable second hand yard, probably be easier to change it.

It is a mechanical indicator with a cable drive isn't it?

(Some are electronic)

Cheers, qldit.

jmey · 09-17-2007, 09:11 AM

yes it is.

jmey · 09-17-2007, 11:25 AM

thanks for the help

09-16-2007, 05:40 PM	#1 (permalink)
jmey Registered User Join Date: Sep 2007 Posts: 3 OS: xp	speedometer reading off My speedometer on my 1984 subaru with a manual transmission reads 125 mph at all speeeds it drops to 0 mph when car is stopped. Is this a problem with the cable or gauge?

09-17-2007, 08:25 AM	#2 (permalink)
qldit TSF Gearhead Join Date: Mar 2007 Location: Brisbane Australia. Posts: 592 OS: All Systems, mainly Linux	Re: speedometer reading off Good Morning jmey, that kind of problem is normally caused by the "drag cups" in the speedometer itself, the spinning drive bearings get dry and run a little eccentrically. Sometimes a few drops of oil in the actual mechanism bearings will fix it. Check that the flex drive cable isn't pre-loading the indicator or bent close to the indicator. (nice and straight and not too tight) It is quite a job to get access to get some oil into them, you might get another from a suitable second hand yard, probably be easier to change it. It is a mechanical indicator with a cable drive isn't it? (Some are electronic) Cheers, qldit. Last edited by qldit; 09-17-2007 at 08:28 AM.

09-17-2007, 09:11 AM	#3 (permalink)
jmey Registered User Join Date: Sep 2007 Posts: 3 OS: xp	Re: speedometer reading off yes it is.

09-17-2007, 11:25 AM	#4 (permalink)
jmey Registered User Join Date: Sep 2007 Posts: 3 OS: xp	Re: speedometer reading off thanks for the help