Skip to main content
Topic: Speedometer (Read 575 times) previous topic - next topic

Speedometer

The VDO  speedometer and odometer on this rig quit right after I bought it. I was just about to order another when something occurred to me. When I turn the ignition key on, the speedo needle does its usual sweep up and down. Would this indicate that the speedo itself is good and that it's actually the other end that's the problem? Thanks.
jor
93 225
95 300
97 270
99 320

Re: Speedometer

Reply #1
The VDO  speedometer and odometer on this rig quit right after I bought it. I was just about to order another when something occurred to me. When I turn the ignition key on, the speedo needle does its usual sweep up and down. Would this indicate that the speedo itself is good and that it's actually the other end that's the problem? Thanks.
jor

Yes. I think you got a Coach like our's: "it was time for failure after the sale". No one seems to like them, (too expensive?). I replaced all my gauges and sensors with ISSPRO.com - Quality Gauges, Tachometers, Speedometers and more!
1993 U-240 "La Villa Grande"..CAT 3116 w/ Pacbrake PRXB...Allison 3060 6-speed..
Previous: 1983 Airstream 310 turbo diesel, 1979 Airstream 280 turbo diesel
                                      Build # 4297
                                      PNW natives
                      Home base:  'Cactus Hug' (Ajo, Arizona)
                        DW Judy & Chet the wonder dog
                        Full-Timers 'Sailing the asphalt sea'

Re: Speedometer

Reply #2
Jor,

I can't speak to the issue, but write down the mileage at which the odometer quit and try and keep track of how many miles you travel before you install the new one.

I read somewhere that some newer digital odometers allow you to set the mileage to a specific number when you install them.

In some states if the current title does not list the unit as "exempt" from mileage, then the next owner will need to state that the odometer has been replaced and provide an estimate of the mileage.

Chris

Re: Speedometer

Reply #3
Quote from: Numbers link=msg=248954 date=147648343I read somewhere that some newer digital odometers allow you to set the mileage to a specific number when you install them [/quote
Which screws the next owner, if not being honest with the mileage. There are a lot of speedometer shops who are licensed to re-set the speedo, and money well spent, unless you're a slimeball.
1993 U-240 "La Villa Grande"..CAT 3116 w/ Pacbrake PRXB...Allison 3060 6-speed..
Previous: 1983 Airstream 310 turbo diesel, 1979 Airstream 280 turbo diesel
                                      Build # 4297
                                      PNW natives
                      Home base:  'Cactus Hug' (Ajo, Arizona)
                        DW Judy & Chet the wonder dog
                        Full-Timers 'Sailing the asphalt sea'

Re: Speedometer

Reply #4
[quote author=Numbers link=msg=248954 date=147648343I read somewhere that some newer digital odometers allow you to set the mileage to a specific number when you install them
 Which screws the next owner, if not being honest with the mileage. There are a lot of speedometer shops who are licensed to re-set the speedo, and money well spent, unless you're a slimeball.
I don't know what year it started but on my '99 the VMSpc gives the actual mileage and engine hours. I bought my new speedometer on-line and it was set at zero. I put it in and changed all the fuel lines, filters, belts, hoses and fluids. I would show the actual mileage to a buyer if I ever sell, but I have an easy record for my future maintenance.
1999 40 ft. U-320 wtfe build 5563 Chuck & Lynda's "Rollin' Inn"  2030 watts solar
prev. mh's 71 GMC 5 yrs. 73 Pace Setter 1 yr. 78 Vogue 5 yrs 81 FTX 40ft all electric 18 yrs. 1996 Monaco Signature 3 yrs.
2014 Grand Cherokee Overland
Dream as if you will live forever. Live as if you will die today.  James Dean

Re: Speedometer

Reply #5
Mike,

That was sort of my point - legally and correctly setting the odometer.

Chris

Re: Speedometer

Reply #6
John,  Spedo uses 12-volt ignition power to boot up which causes the sweep.  MPH is from a different wire that carries 'pulses'.  Assume pulse is generated from Allison ECU, and if there is a bad wire connection at either end there will not be any MPH reading.  Our tachometer pulse is from a magnetic pickup located on the engine bell housing, which is visible by looking down at the end of the transmission that bolts to the engine.  We have seen our Tach pickup wire loose, which caused irratic RPM readings.

Re: Speedometer

Reply #7
Jor post a pic of the speedometer.
91 GV U300 Unihome 40' Build 3811
6V92TA Detroit

Re: Speedometer

Reply #8
Quote
post a pic of the speedometer.

93 225
95 300
97 270
99 320