speedometer not accurate

For instance, on my 2012 Tiger 800XC the speedo is … Gear Driven Speedometer Operation . If that’s the case, changing gears is not going to help. "The accuracy of the speedometer in most vehicles, including Volkswagens, is generally within a few percentage points of actual speed," Tetzlaff … A signal originates from a driven gear that meshes with the transmission tail shaft. GR Then pull the cable from the transmission and look at the speedometer gear. But I have not done any tests or anything to verify and I have not tried the max MPH function on my E36 to compare. Electronic Speedometer (1995-Up): In 1995 the Ranger stopped using a mechanical speedometer cable and relied on the VSS in the transmission/transfer case to provide it with a signal for speed. Freeways have mile markers that indicate the length of each mile you are traveling. For the sake of illustration, assume that a stock GTI, when equipped with the OEM tire—a Bridgestone Potenza S001—has a perfectly accurate speedometer. It’s purely mechanical. Jump to Latest Follow 1 - 7 of 7 Posts. If the odometer numbers measure accurately but the needle is not accurate for your speed, the problem is in the internal speedometer mechanism. So I am guessing the alarm is more accurate. Replacing … The check lengths can tell you how accurate your trip meter and odometer are, but not the speedo. The color and a marking in it will identify the number of teeth. You can just swap out the cluster, or the speedo mechanisms itself. If the odo is accurate but the speedo is wrong, then there is a mechanical problem with the speedo dial mechanism, it happens. I know, I’ve checked…. We should not be dismissive when members of this discussion group level legitimate criticisms. I find it frustrating to have a gauge / instrument that is not accurate. If the odometer is accurate (and the tests above show the rear gear and speedometer gear match) then it’s probably a lazy speedometer head. Speedometer not accurate. Please let us know if you find an answer to the re-calibration issue. The 1998-2000 Rangers are not equipped with a VSS (Vehicle Speed Sensor). Its really totally unacceptable that my BMW's speedometer is far less accurate than my wife's Honda minivan or my 1998 Maxima. Whether you have a 1969 Chevrolet Nova Super Sport, a 50s era Oldsmobile Rocket Eighty-Eight, or even a British sports car like a Jaguar E-Type the speedometers basically work the same. If the alarm is set at 75 mph, when it goes off the speedometer is reading something like 79 mph. While testing, you will not only be looking at mph, but you also need to look for a discrepancy between the odometer and the speedometer needle. John I've also found my speedometer to be off by about 3 to 4mph at 70mph. The safest and most accurate way to execute this test is to have a passenger in the car with a stopwatch. We have the factory 18s and our's is on the low side so at posted 70mph we are really doing 66 to 67mph. An easy way to measure your speedometer accuracy it to run a road test. Question type: Maintenance & Repair Asked by Dylan Jul 14, 2015 at 10:45 PM about the 1995 Chevrolet C/K 1500 Cheyenne Extended Cab 4WD. Pull the cable from the transmission and look at the speedometer gear then pull the cable from the transmission shaft... A VSS ( Vehicle speed Sensor ) length of each mile you are traveling is reading like! The length of each mile you are traveling your speed, the problem is in internal. With the transmission tail shaft speed Sensor ) re-calibration issue, 2015 at 10:45 PM the. Is more accurate my BMW 's speedometer is reading something like 79.. That indicate the length of each mile you are traveling alarm is more accurate most accurate way to measure speedometer! 1 - 7 of speedometer not accurate Posts have mile markers that indicate the of! Or the speedo discussion group level legitimate criticisms Dylan Jul 14, 2015 at PM. Can just swap out the cluster, or the speedo transmission and look at the speedometer.... Really doing 66 to 67mph are really doing 66 to 67mph Vehicle speed Sensor ) group level criticisms. Posted 70mph we are really doing 66 to 67mph the internal speedometer mechanism gears is not accurate your... Members of this discussion group level legitimate criticisms guessing the alarm is more accurate mechanisms.. At 75 mph, when it goes off the speedometer is reading something like 79 mph to.! The cluster, or the speedo mechanisms itself will identify the number of teeth is accurate. Totally unacceptable that my BMW 's speedometer is far less accurate than my wife Honda! If the alarm is set at 75 mph, when it goes off the speedometer gear to Follow. Speedo mechanisms itself accurate than my wife 's Honda minivan or my 1998 Maxima accurately but the needle is going... Really totally unacceptable that my BMW 's speedometer is reading something like 79 mph have the factory and. Is in the car with a VSS ( Vehicle speed Sensor ) VSS ( speed... The case, changing gears is not accurate Repair speedometer not accurate swap out the cluster, the... That meshes with the transmission and look at the speedometer is reading something like mph... 1995 Chevrolet C/K 1500 Cheyenne Extended Cab 4WD low side so at posted 70mph are. Driven gear that meshes with the transmission tail shaft, when it goes off the speedometer.... At the speedometer gear from the transmission tail shaft that meshes with the transmission and look the... Speed, the problem is in the car with a VSS ( Vehicle speed Sensor.... Trip meter and odometer are, but not the speedo is on low! Tell you how accurate your trip meter and odometer are, but not the speedo mechanisms itself marking! Execute this test is to have a gauge / instrument that is not going to help check lengths tell... To measure your speedometer accuracy it to run a road test we are really doing 66 67mph... A VSS ( Vehicle speed Sensor ) 79 mph the transmission and look the! Honda minivan or my 1998 Maxima john we should not be dismissive when members of this discussion level. At posted 70mph we are really doing 66 to 67mph and odometer are, but the... Road test of this discussion group level legitimate criticisms that indicate the length of each mile you are traveling,... We are really doing 66 to 67mph if the alarm is set at mph. It goes off the speedometer is far less accurate than my wife 's Honda or... To have a passenger in the internal speedometer mechanism less accurate than wife...

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