speedo help - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**truckdude239** · 04-08-2015, 09:10 PM

Hooked up my dolphin gauges but my speedo off the computer at idle not moving it pegs at 145 mphs and moving at 20 mph 8ve followed the calibration steps hasnt helped have not called dolphin yet do i need to tap off the vss at the transmission?

BR3W CITY · 04-09-2015, 01:05 AM

What input does it want? The vss is a 4k signal I belive, if the gauges expect different, it won't read properly.

Certain changes can be made in the tune as well if the gauges don't have variable input.

**truckdude239** · 04-09-2015, 08:02 AM

i do not know whqat the gauge wants as its not in the book and there customer support is not that great, right now i have it hooked to the computer wire and it wont read pegs 145 not moving and sit at 20 moving off the computer wire, i've done the calbartion the book says but it did not help

Andy4639 · 04-09-2015, 08:24 AM

Here is some info for you. I hope it helps.

http://www.docskustom.com/pdf/dolphin_install.pdf

**truckdude239** · 04-09-2015, 08:34 AM

Thats the book i have

Andy4639 · 04-09-2015, 09:07 AM

I found this to. Maybe it will help. They have no tech support at all on the website which would bother me if I had their product.

http://www.alanhorvath.com/54chevy/dolphingauges.php

This is a link off the post.

http://www.alanhorvath.com/54chevy/c...o_adjust_4.jpg

This is why I went with www.speedhut.com

GPS no calibration.

**truckdude239** · 04-09-2015, 09:10 AM

those dont help as mine is the one touch speedo it doesn't have the pin switches

BR3W CITY · 04-09-2015, 06:13 PM

Did you look at this one?

http://static.speedwaymotors.com/pdf/910-97710.pdf

They have some explantation on how the pulse signal is made. Its a bit confusing but it looks like which wire is hooked up determies the rating. I see 4,8,16k pulses being possible if I read this right.

Otherwise in the "speedometer" tab in HP Tuners you can alter the VSS output signal to 8 or 16 to match the gauges. Whoever did your tune should be able to make this change in about 28 seconds if his fingers are all broken.

**truckdude239** · 04-09-2015, 06:38 PM

Ill look at it problem is tune was a mail oder tune

04-08-2015, 09:10 PM	#1
truckdude239 Senior Member Join Date: Sep 2005 Location: Lewisville, Nc Posts: 10,238	speedo help Hooked up my dolphin gauges but my speedo off the computer at idle not moving it pegs at 145 mphs and moving at 20 mph 8ve followed the calibration steps hasnt helped have not called dolphin yet do i need to tap off the vss at the transmission? __________________ David fuller Ase Certified Mechanic Click here to help support our board!! 1971 Chevy c-10 under going a 4.8l LSx swap Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305 2007 Honda Accord my daily 145kmiles 2002 Honda Accord 4 door With 330k(sisters car) 2005 toyota Avalon 228k( brothers car) 2002 Sububran 5.3 245k 2000 Tahoe 5.3l 378 General manager for Marco's Carwash & lube

04-09-2015, 01:05 AM	#2
BR3W CITY meowMEOWmeowMEOW Join Date: Sep 2009 Location: MKE WI Posts: 7,128	Re: speedo help What input does it want? The vss is a 4k signal I belive, if the gauges expect different, it won't read properly. Certain changes can be made in the tune as well if the gauges don't have variable input. __________________ *'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING* MY BUILD THE H8RDCPTR //\\ MY YOUTUBE CHANNEL REV J HD

04-09-2015, 08:02 AM	#3
truckdude239 Senior Member Join Date: Sep 2005 Location: Lewisville, Nc Posts: 10,238	Re: speedo help i do not know whqat the gauge wants as its not in the book and there customer support is not that great, right now i have it hooked to the computer wire and it wont read pegs 145 not moving and sit at 20 moving off the computer wire, i've done the calbartion the book says but it did not help __________________ David fuller Ase Certified Mechanic Click here to help support our board!! 1971 Chevy c-10 under going a 4.8l LSx swap Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305 2007 Honda Accord my daily 145kmiles 2002 Honda Accord 4 door With 330k(sisters car) 2005 toyota Avalon 228k( brothers car) 2002 Sububran 5.3 245k 2000 Tahoe 5.3l 378 General manager for Marco's Carwash & lube

04-09-2015, 08:24 AM	#4
Andy4639 Old member Join Date: Jan 2002 Location: Liberty, & Garden City S.C. , U.S. Posts: 19,945	Re: speedo help Here is some info for you. I hope it helps. http://www.docskustom.com/pdf/dolphin_install.pdf __________________ 1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs.

04-09-2015, 08:34 AM	#5
truckdude239 Senior Member Join Date: Sep 2005 Location: Lewisville, Nc Posts: 10,238	Re: speedo help Thats the book i have __________________ David fuller Ase Certified Mechanic Click here to help support our board!! 1971 Chevy c-10 under going a 4.8l LSx swap Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305 2007 Honda Accord my daily 145kmiles 2002 Honda Accord 4 door With 330k(sisters car) 2005 toyota Avalon 228k( brothers car) 2002 Sububran 5.3 245k 2000 Tahoe 5.3l 378 General manager for Marco's Carwash & lube

04-09-2015, 09:07 AM	#6
Andy4639 Old member Join Date: Jan 2002 Location: Liberty, & Garden City S.C. , U.S. Posts: 19,945	Re: speedo help I found this to. Maybe it will help. They have no tech support at all on the website which would bother me if I had their product. http://www.alanhorvath.com/54chevy/dolphingauges.php This is a link off the post. http://www.alanhorvath.com/54chevy/c...o_adjust_4.jpg This is why I went with www.speedhut.com GPS no calibration. __________________ 1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs.

04-09-2015, 09:10 AM	#7
truckdude239 Senior Member Join Date: Sep 2005 Location: Lewisville, Nc Posts: 10,238	Re: speedo help those dont help as mine is the one touch speedo it doesn't have the pin switches __________________ David fuller Ase Certified Mechanic Click here to help support our board!! 1971 Chevy c-10 under going a 4.8l LSx swap Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305 2007 Honda Accord my daily 145kmiles 2002 Honda Accord 4 door With 330k(sisters car) 2005 toyota Avalon 228k( brothers car) 2002 Sububran 5.3 245k 2000 Tahoe 5.3l 378 General manager for Marco's Carwash & lube

04-09-2015, 06:13 PM	#8
BR3W CITY meowMEOWmeowMEOW Join Date: Sep 2009 Location: MKE WI Posts: 7,128	Re: speedo help Did you look at this one? http://static.speedwaymotors.com/pdf/910-97710.pdf They have some explantation on how the pulse signal is made. Its a bit confusing but it looks like which wire is hooked up determies the rating. I see 4,8,16k pulses being possible if I read this right. Otherwise in the "speedometer" tab in HP Tuners you can alter the VSS output signal to 8 or 16 to match the gauges. Whoever did your tune should be able to make this change in about 28 seconds if his fingers are all broken. __________________ *'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING* MY BUILD THE H8RDCPTR //\\ MY YOUTUBE CHANNEL REV J HD

04-09-2015, 06:38 PM	#9
truckdude239 Senior Member Join Date: Sep 2005 Location: Lewisville, Nc Posts: 10,238	Re: speedo help Ill look at it problem is tune was a mail oder tune __________________ David fuller Ase Certified Mechanic Click here to help support our board!! 1971 Chevy c-10 under going a 4.8l LSx swap Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305 2007 Honda Accord my daily 145kmiles 2002 Honda Accord 4 door With 330k(sisters car) 2005 toyota Avalon 228k( brothers car) 2002 Sububran 5.3 245k 2000 Tahoe 5.3l 378 General manager for Marco's Carwash & lube



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