Question about Cars & Trucks
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Posted on Jan 02, 2017
This has been a problem with VOLVO especially the 850 models what happens is the plastic senssor inside the speedometer breaks off and it will tell you the road speed but ODOMETER AND TRIP METER will not work and the only way to fix it is to take the cluster out and sometimes it can be soldered back in place or get a used cluster and replace the unit sorry but it is not a simple fix
Posted on May 25, 2009
The problem is going to be a worn or broken odometer gear. You can purchase the gear at odometergears.com for $29.00 with the shipping. Follow their how to repair on the Mustang to help in the repair. I believe you will have just the worm gear to replace.
Posted on May 29, 2009
The only way to adjust the odometer is to bring it to a dealership and have them do it. For the cost and hastle over 20000 (4 oil changes), I would recommend leaving it alone.
Posted on Jun 15, 2009
Most likely a speed sensor is going bad (most cars and truck do not use mechanical speedometer cables anymore) most sensors are located near the differential in rwd cars or near the drive shaft on the transmission. Best bet is to get a Haynes manual for your car to help locate the speed sensor. Remove it and take it to the auto parts store so you can visually compare it to the replacement. Install the new speed sensor and it should restore your speedometer and odometer.
Posted on Aug 19, 2009
SOURCE: speedometer erratic/intermittent
I don't know what is causing this problem, but I know phil140701's answer is completely wrong on two counts. First, 740 Volvos starting at least in 1986 have electronic speedometers and no cable. There is an electronic sensor on the differential which sends a signal to the speedometer cluster. Second, if it were strictly mechanical with a cable then the voltage regulator could have no effect on it at all.
Posted on Sep 01, 2009
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