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#722761 - April 21st 2017 8:46 am 1997 dodge ram b2500 mark 3 conversion van gauge cluster question  
Joined: Sep 2016
Posts: 6
dodgerocks Offline
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dodgerocks  Offline
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Joined: Sep 2016
Posts: 6
Minnesota
In my van i have noticed my speedometer is off it varies depending on how fast you are going. I was wondering if there is a rebuild kit for the gauge cluster because the speed sensors have been replaced and that still did not fix it. any help or info would be appreciated.

#722873 - April 24th 2017 2:07 am Re: 1997 dodge ram b2500 mark 3 conversion van gauge cluster question [Re: dodgerocks]  
Joined: Mar 2007
Posts: 4,339
Ram4ever Online content
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Dundee, Michigan
Hi Dodgerocks, love your nym! smile

To start at the simple end of the spectrum, out of curiosity, are the correct size rear tires on your van? They should be listed on the data plate decal in the driver's door frame, if the conversion company didn't remove it.

What is the mileage on the odometer? If something is worn, that might help point where to look. A 1997 might not even have a direct mechanical connection to the cluster; that year is late enough it might be electronic. If you see this post, what do you think Reed?

Does your van have cruise control?

Can you see what sort of connections there are at the back of the instrument cluster if you peek up under the dash? What does the sender mounted at the rear of the transmission, and its cabling look like? Try tracing the cables back towards the front of the van, especially if there's a big one, about 3/8" in diameter. A couple of pictures would help us greatly, if you can get at those areas.


-It's been such a LONG TIME... BlueShift>> 1981 Dodge Ram B250 Custom Sportsman Maxi Van


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#722878 - April 24th 2017 8:17 am Re: 1997 dodge ram b2500 mark 3 conversion van gauge cluster question [Re: Ram4ever]  
Joined: Sep 2016
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dodgerocks Offline
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dodgerocks  Offline
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Joined: Sep 2016
Posts: 6
Minnesota
i will try and get some pics and yes i believe it has the right size tire on the rear from what i have heard is that maby the step motor in the cluster is going bad and the mileage is 177,460

#722879 - April 24th 2017 8:18 am Re: 1997 dodge ram b2500 mark 3 conversion van gauge cluster question [Re: dodgerocks]  
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dodgerocks Offline
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dodgerocks  Offline
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Joined: Sep 2016
Posts: 6
Minnesota
and yes it has cruiz controll

#723444 - May 08th 2017 10:51 am Re: 1997 dodge ram b2500 mark 3 conversion van gauge cluster question [Re: dodgerocks]  
Joined: Feb 2012
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RamVan2500 Offline
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RamVan2500  Offline
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Florida, USA
I've rebuilt and calibrated my speedo before. Mine used to bounce all over the place. If you take apart the speedo you will find if memory recalls 3 electrolytic capacitors, replace those. To calibrate it was a little tricky. What I did was put the rear axle up on stands and then using a scan tool to view the vehicle speed from the speed sensor I held the vehicle at 35MPH carefully by footwork between brake and gas pedal and then inserted the speedo needle with the pointer at 35MPH. It took a few tries before I got the needle in perfectly. The foot just tends to move when pushing the needle in lol. I then proceeded to find one of the speed signs the police put all over to tell us our speed limit and well at 35MPH the speedo said 35MPH and at 50 it read 51 etc... Another way of verifying is by cruise activation. Cruise control on my van can only be activated at speeds of 35MPH and up. So I drove until the speedo read 35 and put cruise control on and it worked. I tried at 30 and no dice and tried at 32.5-33 and no dice. Once the needle hit 35 it would let me put it on, so it was dead on.

Anyways. After replacing the capacitors the speedo reading was different than before replacing the caps. I'm sure after 20 years you have some electrolytic caps that have really changed in capacitance or moreso in ESR.

#725402 - July 05th 2017 10:29 pm Re: 1997 dodge ram b2500 mark 3 conversion van gauge cluster question [Re: dodgerocks]  
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RavshngOne Offline
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RavshngOne  Offline
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Posts: 663
Southern New Jersey
Late joining the convo here - but also, if the speedo is failing, there is a seller on eBay who has a lot of NOS Dodge 94-97 speedos, and he'll set the odo to your correct mileage just to buy one of the lot. At least, that's what he did for me before I parted out my '94.


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1977 Dodge B200 Shorty V8-360 4.10 rear w/OD A518 tranny
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1994 Dodge B250 Lo-Top V8-318 (RIP 1998-2013)
#729919 - November 19th 2017 4:42 pm Re: 1997 dodge ram b2500 mark 3 conversion van gauge cluster question [Re: RavshngOne]  
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RamVan2500 Offline
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RamVan2500  Offline
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Florida, USA
Originally Posted by RavshngOne
Late joining the convo here - but also, if the speedo is failing, there is a seller on eBay who has a lot of NOS Dodge 94-97 speedos, and he'll set the odo to your correct mileage just to buy one of the lot. At least, that's what he did for me before I parted out my '94.

Yeah I actually talked with that guy and I ended up rebuilding my speedo instead of replacing. It needed new capacitors and the integrated chip. I calibrated it within 1mph


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