(Sorry to start a new thread on this, but I think my question in 'Wacko Speedo' got lost in the noise...)
I was getting nasty screeching noises from my dash, which coincided with my speedo doing odd little jumps (not as bad as JB's) . It sounded like I had a nest of baby birds in my dash. Very annoying, and no one wanted to ride with me....
So, I takes off the instrument cluster, and spray silicone lubricant down the end of the cable. I actually did this with the truck moving (don't ask me how) so that the lubricant would work its way down in the cable and I could add more in the "cup". Oh yeah, and I did remove the little rubber boot at the end of the cable so that I could spray into the cable jacket better.
Here's where things went wrong... While the cluster was off and sitting on my pass seat, I decided to spray a little silicone lubricant on the back of the speedo.
BAD IDEA.
Once everything was re-assembled, I achieved the goal of no more squeaks from my speedo cable, but the speedo now registers low (like 25 when I know I'm going around 40) or NOT AT ALL. Sometimes it "catches up" with my true speed (I think), other times it hardly goes over 15. Sometimes it won't go back down to zero when I stop.
Oh, but the odometer still works.
Why did I mess up my speedo by spraying a little silicone lube in the back? And how do I fix it?
I was getting nasty screeching noises from my dash, which coincided with my speedo doing odd little jumps (not as bad as JB's) . It sounded like I had a nest of baby birds in my dash. Very annoying, and no one wanted to ride with me....
So, I takes off the instrument cluster, and spray silicone lubricant down the end of the cable. I actually did this with the truck moving (don't ask me how) so that the lubricant would work its way down in the cable and I could add more in the "cup". Oh yeah, and I did remove the little rubber boot at the end of the cable so that I could spray into the cable jacket better.
Here's where things went wrong... While the cluster was off and sitting on my pass seat, I decided to spray a little silicone lubricant on the back of the speedo.
BAD IDEA.
Once everything was re-assembled, I achieved the goal of no more squeaks from my speedo cable, but the speedo now registers low (like 25 when I know I'm going around 40) or NOT AT ALL. Sometimes it "catches up" with my true speed (I think), other times it hardly goes over 15. Sometimes it won't go back down to zero when I stop.
Oh, but the odometer still works.
Why did I mess up my speedo by spraying a little silicone lube in the back? And how do I fix it?