North American Turbocoupe Organization



IVR: how do you check voltage
sdupree46 Offline
Junior Member
#1
I had posted earlier about a problem with my gages. Temp, Oil, Gas, also Low Fuel Indicator light stays on. Walsted suggested that the problem could be with my Instrument Voltage Regulator. I have the instrument cluster out far enough that i can get a voltage meter on the IVR. Could some please tell me how to check the voltage on the IVR.
There are 2 round terminals (?) on top of the IVR. Is this where I check the voltage ?
Thanks for your help.
1988 2.3 coupe / a work in process
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Pete D Offline
Administrator
#2
" There are 2 round terminals (?) on top of the IVR. Is this where I check the voltage ?"

Yep

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NATO Member. it's not a vice, it's an obsession
"The nice thing about each new day is nobody ever used it before" Barnaby Jones
88 TC X 2, 86 SVO, mods list at
http://www.turbotbird.com/showroom/pd_88tc.htm
Pete Dunham


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Jeff K Offline
Administrator
#3
You wont see a steady 5 V there, however. The IVR is a mechanical regulator (variable duty cycle thermal relay). What you will see a "square wave" voltage output jumping between about ROUGHLY 4 and 8 volts about once every few seconds.

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Jeff Korn

88 Turbo Coupe: Intake and exhaust mods, T3 turbo at 20 psi, forced air intercooler, water injection, bypass valve, Ranger roller cam, subframes, etc., etc.. // 86 Tbird 5.0 (original owner): intake, exhaust, valvetrain mods, 100 HP nitrous, ignition, gears, suspension, etc., etc.... // 91 Escort: Bone stock winter car // 00 Windstar (wifes vehicle)
Jeff Korn

88 Turbo Coupe: Intake and exhaust mods, T3 turbo at 24 psi, forced air IC, water injection, BPV, Ranger cam, subframes, etc., etc.
86 Tbird 5.0 (original owner): intake, exhaust, valvetrain mods, 100 HP N2O, ignition, gears, suspension, etc., etc.
05 Taurus SEL Duratec daily driver
04 Taurus Duratec (wifes car)
02 Pontiac Grand Prix GT
95 Taurus GL Vulcan winter beater
67 Honda 450 Super Sport - completely customized
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