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Car Forum / Dodge / Dodge Trucks / August 2005Just bought a '97 1500 ... speedo is 9 mph high at all speeds ... ???
We just bought a '97 1500 and the speedometer is 9 mph high at all speeds, and the odometer is 2/10 mile slow in 10 miles. I'm not concerned about the odometer ... it says 9.8 miles in a measured 10 mile stretch ... no big deal. It's the speedo that is curious. It says 30 - you're going 21 ... it says 50 - you're going 41 ... etc. Is there an adjustment in it to change this ?? Does a person have to remove the speedo and reposition the needle ?? > We just bought a '97 1500 and the speedometer is 9 mph high at all > speeds Sure sounds like it... if it were a tire size difference (from the original size programmed into the PCM), it would read proportionally higher the faster you went. It's pretty easy to do - I believe you can remove the plastic shield with the cluster still in place. Just pull the dash bezel off (two screws behind the cupholders, two more in the ashtray), and you can then remove the screws holding the clear cover on the cluster (I think they're the brass-colored ones - but it's been a while) - then the needle will just pull off. It's splined, but not keyed, so you can just re-position it. First check the tire size against what the factory put on the truck. Sounds like you have smaller tires than factory OR the tires are a different brand that doesn't measure the same diameter. If they are the same size take the truck to a dealer and have them reprogram the speedo to read properly. IF you pull the needle off you will likely damage the drive motor that moves it. It is also possible that someone else was running larger tire on it and had a programmer change the speedo settings to match those tires.  SignatureSteve W. > We just bought a '97 1500 and the speedometer is 9 mph high at all > speeds, and the odometer is 2/10 mile slow in 10 miles. I'm not [quoted text clipped - 3 lines] > Is there an adjustment in it to change this ?? Does a person have to > remove the speedo and reposition the needle ?? If this were due to a tire size, the speedometer would not be consistant in the amount of error. At low speeds, the speedometer would be close and the faster you went, the farther off it will get. The fact that the speedo is always the same amount of MPH in error and the odometer does not agree with the speedometer shows that it has nothing to do with tire size. SignatureIf at first you don't succeed, you're not cut out for skydiving > > First check the tire size against what the factory put on the truck. [quoted text clipped - 17 lines] > http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups > ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- That's right ... if it were tire size, it would be off a certain percent NOT a consistant amount at all speeds. Thanks to all that replied and helped me !!!! I removed the dash 'bezel', removed the plastic instrument cover, and repositioned the needle. It took me 8 or 10 tries, but now it is dead on !! By-the-way, aren't those handheld GPS devices FANTASTIC !! I borrowed my sons (he uses it for fishing) ... it has a view that displays a speedometer/odometer ... unbelievable !! ... THANKS again !! > That's right ... if it were tire size, it would be off a certain > percent NOT a consistant amount at all speeds. [quoted text clipped - 13 lines] > avast! - copyright (c) 1988-2005 ALWIL Software. > http://www.avast.com If you assumed the GPS reading is correct and the Truck speedo was incorrect you may be wrong. --- avast! Antivirus: Outbound message clean. Virus Database (VPS): 0531-4, 05/08/2005 Tested on: 06/08/2005 11:09:00 AM avast! - copyright (c) 1988-2005 ALWIL Software. http://www.avast.com JEEEZ....................don't mention 'per cent' to the Boner > That's right ... if it were tire size, it would be off a certain > percent NOT a consistant amount at all speeds. [quoted text clipped - 6 lines] > > ... THANKS again !! Still being the group a.shole, I see SignatureIf at first you don't succeed, you're not cut out for skydiving > JEEEZ....................don't mention 'per cent' to the Boner > [quoted text clipped - 8 lines] > > > > ... THANKS again !! still jumping thru any hoop that I hold up, aren't you ? > Still being the group a.shole, I see > [quoted text clipped - 10 lines] > > > > > > ... THANKS again !! Your lame reverse psychology didn't work before and isn't working now either so grow the phuck up already. SignatureIf at first you don't succeed, you're not cut out for skydiving > still jumping thru any hoop that I hold up, aren't you ? > [quoted text clipped - 12 lines] > > > > > > > > ... THANKS again !! > Your lame reverse psychology didn't work before and isn't working now either > so grow the phuck up already. [quoted text clipped - 15 lines] > > > > > > > > > > ... THANKS again !! |
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