Modified gauge cluster

Nopis1O · 02-18-2009, 11:50 PM

Is there anyway a tach could be off by a couple thousand rpm's? Its an aftermarket tach and i think it is about 2000rpm's above what that actual engine is reving at. is this possible? if it is, is there anyway to check and fix the problem?

thanks

Whizbang · 02-19-2009, 12:49 AM

well i wouldnt put it passed it. Best thing to do though is just hook up another tach to the signal wire and compare.

Ender · 02-19-2009, 08:45 AM

Yeah, anything's possible. See if you can't look up info/instructions for that particular tach and then find out how to set it for 4/6/8 cylinders, it may be set wrong. I don't remember which setting is appropriate for stock FC timing, but I'm pretty sure one of them is (I think it's 4cyl).

Caim · 02-19-2009, 02:09 PM

Easy way to tell is if it is at 0 when the car is off. If it is then make sure that it is connected right. Go from there.

Roen · 02-19-2009, 02:21 PM

FC's should be set at 4 cyl for tachs.

Flooder · 02-19-2009, 05:57 PM

Are you getting the tach signal from the trailing coil? If not that could be why.

Nopis1O · 02-19-2009, 07:12 PM

I think im going to reset it to make sure its on 4cyl cuz im almost poss. its on the trailing coil but i will check that too. Thanks Guys!!

Flooder · 02-19-2009, 07:14 PM

Theres also a check connector that you can connect it to to receive a tach signal. It should be on the drivers side of the engine bay, and its a green plug. Look into that as well.

Max777 · 02-19-2009, 09:38 PM

this is that carbed N/A btw, the stock coils have been replaced with MSD super blasters...

...or whatever.

Nopis1O · 02-20-2009, 02:55 AM

yea thanks max. did you think that idle sounded like it was at three k?

RETed · 02-20-2009, 04:48 AM

Plugged into the STOCK leading coil check connector - "4 cylinder".
Plugged into the STOCK trailing coil check connector - "8 cylinder".

If you're using a distributor that uses one coil for leading and one coil for trailing, it should be "4 cylinder".

-Ted

Max777 · 02-20-2009, 07:45 PM

well, i dont know what a 3k idle sounds like with exhaust, but my car was pretty loud when I first got it running.

It only had an open header back then, and was idling roughly at around 2,800 rpm. I had a bad TPS and aparently a vaccum leak.

02-18-2009, 11:50 PM	#1
Nopis1O Rotary Fanatic Join Date: Apr 2008 Location: Mid State Illinois Posts: 159 Rep Power: 18	Modified gauge cluster Is there anyway a tach could be off by a couple thousand rpm's? Its an aftermarket tach and i think it is about 2000rpm's above what that actual engine is reving at. is this possible? if it is, is there anyway to check and fix the problem? thanks __________________ 1988 Fc Vert. Super Stock 1990 Fc Hard top: Brideported 13b, weber carb, 350z wheels w/nitrogen, or 16in BBS meshies, Msd, Racaro Racing Seats, Custom Gauge cluster, custom Intake, Relocated Battery, 3inch header back borla exhaust system, Alpine stereo system, Wire tucked, S4 shift boot&knob, custom Strut bar, And soon to come a Full black w/ gold pearl paint job, powder coated break calipers, all black interior, bride headliner/door panels.

02-19-2009, 12:49 AM	#2
Whizbang Respecognize! Join Date: Jul 2008 Location: Δx = ħ/2Δp Posts: 3,190 Rep Power: 20	well i wouldnt put it passed it. Best thing to do though is just hook up another tach to the signal wire and compare. __________________ For current updates and event coverage check out Follow on Twitter! @WhizbangRally Whizbang Rally's Webpage \| Facebook

02-19-2009, 05:57 PM	#6
Flooder Rotary Fanatic Join Date: Feb 2008 Location: Tucson, Arizona Posts: 321 Rep Power: 18	Are you getting the tach signal from the trailing coil? If not that could be why. __________________ AZRX7.COM Red 1991 A-package(SOLD) Red 1990 GXL(SOLD) White 1989 GTUs(DEAD) Red 1988 Turbo II(DD) Black 1988 Turbo II(SOLD) Rebuilt and street ported motor, Garrett T04E Turbo, 3" Turbo Inlet Duct/AEM Dry Flow Filter, Your Mom's MBC, Blitz FMIC, 890cc and 1000cc injectors, Tomei FPR, Walbro, Rtek 2.1 ECU, Taurus E-Fan, Turbonetics BOV, 3" Motoria/Corksport Turbo Back Exhaust, Emissions Removed, Greddy Boost Gauge, Megan Racing Water Temp Gauge, 5one5 Triple Gauge Pod, AEM Uego, GP Sports Body Kit, Fiber Images CF Hood, S5 Seats, S5 Tails, S5 Alt, Dual Alt Pulley, D2 Coilovers, NRG Quick Release, Shook Motorsports Radiator, HID's, AN/Steel Braided Oil Cooler Lines, SUPER JDM TYTE DRIFT BUTTON www.DensetsuMotorsports.com www.AZRX7.Com www.FloodersAdventure.com

02-19-2009, 07:12 PM	#7
Nopis1O Rotary Fanatic Join Date: Apr 2008 Location: Mid State Illinois Posts: 159 Rep Power: 18	I think im going to reset it to make sure its on 4cyl cuz im almost poss. its on the trailing coil but i will check that too. Thanks Guys!! __________________ 1988 Fc Vert. Super Stock 1990 Fc Hard top: Brideported 13b, weber carb, 350z wheels w/nitrogen, or 16in BBS meshies, Msd, Racaro Racing Seats, Custom Gauge cluster, custom Intake, Relocated Battery, 3inch header back borla exhaust system, Alpine stereo system, Wire tucked, S4 shift boot&knob, custom Strut bar, And soon to come a Full black w/ gold pearl paint job, powder coated break calipers, all black interior, bride headliner/door panels.

02-19-2009, 07:14 PM	#8
Flooder Rotary Fanatic Join Date: Feb 2008 Location: Tucson, Arizona Posts: 321 Rep Power: 18	Theres also a check connector that you can connect it to to receive a tach signal. It should be on the drivers side of the engine bay, and its a green plug. Look into that as well. __________________ AZRX7.COM Red 1991 A-package(SOLD) Red 1990 GXL(SOLD) White 1989 GTUs(DEAD) Red 1988 Turbo II(DD) Black 1988 Turbo II(SOLD) Rebuilt and street ported motor, Garrett T04E Turbo, 3" Turbo Inlet Duct/AEM Dry Flow Filter, Your Mom's MBC, Blitz FMIC, 890cc and 1000cc injectors, Tomei FPR, Walbro, Rtek 2.1 ECU, Taurus E-Fan, Turbonetics BOV, 3" Motoria/Corksport Turbo Back Exhaust, Emissions Removed, Greddy Boost Gauge, Megan Racing Water Temp Gauge, 5one5 Triple Gauge Pod, AEM Uego, GP Sports Body Kit, Fiber Images CF Hood, S5 Seats, S5 Tails, S5 Alt, Dual Alt Pulley, D2 Coilovers, NRG Quick Release, Shook Motorsports Radiator, HID's, AN/Steel Braided Oil Cooler Lines, SUPER JDM TYTE DRIFT BUTTON www.DensetsuMotorsports.com www.AZRX7.Com www.FloodersAdventure.com

02-19-2009, 02:09 PM	#4
Caim Rotary Fan in Training Join Date: Feb 2009 Posts: 93 Rep Power: 17	Easy way to tell is if it is at 0 when the car is off. If it is then make sure that it is connected right. Go from there.

02-19-2009, 02:21 PM	#5
Roen Evil Club Mod Join Date: Feb 2008 Posts: 183 Rep Power: 18	FC's should be set at 4 cyl for tachs.

02-19-2009, 09:38 PM	#9
Max777 Pirate Join Date: Mar 2008 Location: Central IL Posts: 1,323 Rep Power: 19	this is that carbed N/A btw, the stock coils have been replaced with MSD super blasters... ...or whatever. __________________ Rotaries:They are NOT that complicated!

02-20-2009, 02:55 AM	#10
Nopis1O Rotary Fanatic Join Date: Apr 2008 Location: Mid State Illinois Posts: 159 Rep Power: 18	yea thanks max. did you think that idle sounded like it was at three k? __________________ 1988 Fc Vert. Super Stock 1990 Fc Hard top: Brideported 13b, weber carb, 350z wheels w/nitrogen, or 16in BBS meshies, Msd, Racaro Racing Seats, Custom Gauge cluster, custom Intake, Relocated Battery, 3inch header back borla exhaust system, Alpine stereo system, Wire tucked, S4 shift boot&knob, custom Strut bar, And soon to come a Full black w/ gold pearl paint job, powder coated break calipers, all black interior, bride headliner/door panels.

02-20-2009, 07:45 PM	#12
Max777 Pirate Join Date: Mar 2008 Location: Central IL Posts: 1,323 Rep Power: 19	well, i dont know what a 3k idle sounds like with exhaust, but my car was pretty loud when I first got it running. It only had an open header back then, and was idling roughly at around 2,800 rpm. I had a bad TPS and aparently a vaccum leak. __________________ Rotaries:They are NOT that complicated!