Auto meter tach reading low - The 1947 - Present Chevrolet & GMC Truck Message Board Network

GMR-PERFORMANCE · 03-09-2013, 10:40 AM

I have been runinng this monster tach without issue for some time. Well I got moved to TX and go to take it for a spin. Well I notice that the tach is reading low compared to the VHX cluster tach. I have done the ground thing, even added two more chassis to firewall /frame.... I am running one lead off the MSD and then I have a hard connection to split the feed into both the auto meter and the DD cluster.. This was working flawless for several months.. Ideas??

BigDan3131 · 03-10-2013, 01:23 AM

Why do you need both? Your not taking the AutoMeter tach off for shows are you?

GMR-PERFORMANCE · 03-10-2013, 09:56 AM

I really do not look at the CC VHX tach at all. Only the auto meter. Not the point though it worked before.. Just a post to see if any one has run into this

hotrod 80 · 03-11-2013, 01:08 AM

I had a memery recall go bad on me second round of season opener . 5" Autogauge by autometer . Swapped back to my older dial for shift light autometer and was good to go the next day .

Marv D · 03-12-2013, 10:18 AM

I gotta be honest,,, I rarely look at ANY gauge on the track, Air shifting, data logging, big a$$ warning lights for low oil pressure and shift light is set more for a ut-oh it's over-revving.... I figure things will take care of themselves. I learned that going down track,, by the time you see something wrong in the gauges it's kinda like the idiot lights...... just tells you what went wrong, what switch you forgot to turn on, etc.

Seriously... if you have time to monitor the gauges,, your not fast enough

(LOL, just to poke at Steve a bit!)
Steve I don't know about the VHX dash, but Dakota has some specific instructions when using a ignition box. I know u said you checked grounds,, check the tach ground (make sure its grounded to a unpainted surface etc) then send it back. I've been seeing a MAJOR downturn in the quality of Autometer stuff lately.

GMR-PERFORMANCE · 03-12-2013, 02:40 PM

I only use the shift light on the upshift but more so I want it to work correctly .. I agree that the quality has gone down hill

03-09-2013, 10:40 AM	#1
GMR-PERFORMANCE Registered User Join Date: Aug 2010 Location: Keller TX Posts: 836	Auto meter tach reading low I have been runinng this monster tach without issue for some time. Well I got moved to TX and go to take it for a spin. Well I notice that the tach is reading low compared to the VHX cluster tach. I have done the ground thing, even added two more chassis to firewall /frame.... I am running one lead off the MSD and then I have a hard connection to split the feed into both the auto meter and the DD cluster.. This was working flawless for several months.. Ideas?? __________________ 62 long box with a little SBC http://www.67-72chevytrucks.com/vboa...d.php?t=510631 http://good-times.webshots.com/album/561798652HdwqzG

03-10-2013, 01:23 AM	#2
BigDan3131 Registered User Join Date: Jun 2006 Location: Maple Valley, WA Posts: 1,913	Re: Auto meter tach reading low Why do you need both? Your not taking the AutoMeter tach off for shows are you? __________________ Custom Painter/Restoration Specialist 1965 GMC 3/4 Ton LB SOLD? 1964 Chevy El Camino in full restoration 1991 Chevy S10 288K+ miles 2nd Owner SOLD 2020 RAM 1500 Warlock

03-10-2013, 09:56 AM	#3
GMR-PERFORMANCE Registered User Join Date: Aug 2010 Location: Keller TX Posts: 836	Re: Auto meter tach reading low I really do not look at the CC VHX tach at all. Only the auto meter. Not the point though it worked before.. Just a post to see if any one has run into this __________________ 62 long box with a little SBC http://www.67-72chevytrucks.com/vboa...d.php?t=510631 http://good-times.webshots.com/album/561798652HdwqzG

03-11-2013, 01:08 AM	#4
hotrod 80 mini truck racer Join Date: Aug 2006 Location: Baytown , texas Posts: 3,010	Re: Auto meter tach reading low I had a memery recall go bad on me second round of season opener . 5" Autogauge by autometer . Swapped back to my older dial for shift light autometer and was good to go the next day . __________________ 1949 5-window 1969 Camaro 1976 Chevy Luv yellow 1978 Chevy Luv Blue 1976 Chevy Luv Black 1979 Firebird Flooded in Harvey 1999 F350 Dually 2005 GMC Sierra 4.8 RCSB 2014 Explorer (wifes) My build :http://67-72chevytrucks.com/vboard/s...d.php?t=399148 Build #2: http://67-72chevytrucks.com/vboard/s...d.php?t=653583

03-12-2013, 10:18 AM	#5
Marv D Registered Truck Offender Join Date: May 2008 Location: hells training ground (aka Ariz) Posts: 3,118	Re: Auto meter tach reading low I gotta be honest,,, I rarely look at ANY gauge on the track, Air shifting, data logging, big a$$ warning lights for low oil pressure and shift light is set more for a ut-oh it's over-revving.... I figure things will take care of themselves. I learned that going down track,, by the time you see something wrong in the gauges it's kinda like the idiot lights...... just tells you what went wrong, what switch you forgot to turn on, etc. Seriously... if you have time to monitor the gauges,, your not fast enough (LOL, just to poke at Steve a bit!) Steve I don't know about the VHX dash, but Dakota has some specific instructions when using a ignition box. I know u said you checked grounds,, check the tach ground (make sure its grounded to a unpainted surface etc) then send it back. I've been seeing a MAJOR downturn in the quality of Autometer stuff lately. __________________ Still playin with trucks, even at my age! When you're dead, it's only a problem for the people around you, because you don't know you're dead. .....It's kinda the same when your STUPID. I just did my taxes and reviewed my SS statement. Thanks to the current administration it looks like I will only have to work till noon on the day of my funeral.

03-12-2013, 02:40 PM	#6
GMR-PERFORMANCE Registered User Join Date: Aug 2010 Location: Keller TX Posts: 836	Re: Auto meter tach reading low I only use the shift light on the upshift but more so I want it to work correctly .. I agree that the quality has gone down hill __________________ 62 long box with a little SBC http://www.67-72chevytrucks.com/vboa...d.php?t=510631 http://good-times.webshots.com/album/561798652HdwqzG



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