My speedometer and tactometer do not work. Mileage stuck on 110000 miles. Only works in the warm weather...why

YOU HAVE A BAD SPEEDO HEAD NEED TO REPLACE OR SEND TO HAVE FIX

I don't know what type of vehicle you have but usually when both the odometer and speedometer don't work, you need a new speedometer cable. My husband replaced the one on his 97 Tracker and it worked for 2 weeks and quit again. He just drives with the flow of traffic and in order to pass inspection he has to get a DMV Waiver every single year. He will never be able to sell it because he has no idea what the actual mileage on it is. He just drives it in bad weather and stuff since it has 4WD. I don't think the speedometer cable is very expensive. Good luck.

Use high mileage oil, Castrol or whatever you prefer. Warm and Hot weather, 10w40, cool or cold weather 10w30.

Sounds like the clocks have been tampered with if the speedometer is still working, You can try running the miles backwards with a drill on the cable, and then forwards again past the number where it jammed, run it back and forth a few times and once it gets past the stuck number youre sorted... it may happen again in 1,10,100 or 1000 miles time... and if so youre best with a new or scrapyard speedometer - write down the original mileage when you change the speedometer - maybe on a panel under the bonnet so you have something to go off to decide when to service the car - EG old mileage + new mileage = actual mileage. hope this helps.

This is fairly common particularly on the 05 Mustang models. The problem is failing stepper motors on the instrument cluster circuit board. Check out this page for a fix for it - 05 Mustang speedometer fix

Pretty common problem with these. Here's a guide to learn how to fix GM instrument clusters yourself, I used it to fix mine and it worked great.How to guide for Yukon instrument cluster repair

You will need to pull the speedometer out and have the odometer (u call mileage counter) repaired, the little drive gear that comes off the speedometer to operate the odometer has failed or broken.

It's actaully a timing belt, not a chain. But the mileage recommendation i believe is 60,000 or 90,000 miles.

iv had a few people come in with that complaint I clean inside of door and spray seal with good 100% silicone spray and spray latches with penetrating oil