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Fellas i think my IVR is going bad?...…….Gauges are erratic and a few times went to zero and then back however...…..does my 88 Turbo Coupe have an IVR and if so why can I not find a aftermarket/replacement for it?
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Jeff K
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Joined:
Apr 2001
Milwaukee, WI
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The POS OEM thermal / mechanical IVR is a throwback to the 1960s. Check Ebay, Amazon, etc for a solid state replacement version. I built my own solid state adjustable IVRs for both my Tbirds for $5 each worth of parts.
Usually failing IVR causes the oil, temp and fuel gauges to go to max for a while and then return to normal, but I have seen them drop out too. If all 3 gauges do the same thing at the same time, by far the most likely cause is the IVR.
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.
11 Crown Vic Interceptor
14 Toyota Camry (wifes car)
95 Taurus GL Vulcan winter beater
67 Honda 450 Super Sport - completely customized
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(11-01-2019, 12:04 PM)Jeff K Wrote: The POS OEM thermal / mechanical IVR is a throwback to the 1960s. Check Ebay, Amazon, etc for a solid state replacement version. I built my own solid state adjustable IVRs for both my Tbirds for $5 each worth of parts.
Usually failing IVR causes the oil, temp and fuel gauges to go to max for a while and then return to normal, but I have seen them drop out too. If all 3 gauges do the same thing at the same time, by far the most likely cause is the IVR.
Thanx Jeff ….can you be more specific as to what I should look for on E-bay on Amazon?.....88 Turbo Coupe replacement SS IVR?..And also is the IVR still on the back of the instrument cluster with the 9v battery type connector?..thanx again
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Jeff K
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Joined:
Apr 2001
Milwaukee, WI
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Yup the thing with the 9 V battery connector is the IVR.
I remember seeing some solid state IVRs a year or 2 ago, but dont remember what I searched for, as I wasnt going to buy any anyway since I built my own.
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.
11 Crown Vic Interceptor
14 Toyota Camry (wifes car)
95 Taurus GL Vulcan winter beater
67 Honda 450 Super Sport - completely customized
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anasazi4st
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Joined:
Feb 2015
Phoenix, AZ
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(11-02-2019, 03:05 PM)Jeff K Wrote: Yup the thing with the 9 V battery connector is the IVR.
I remember seeing some solid state IVRs a year or 2 ago, but dont remember what I searched for, as I wasnt going to buy any anyway since I built my own.
Jeff:
Can you share with us the schematic and parts you used to build your own?
I replaced mine years ago with a new OEM one, but the gauges are starting to act finicky again—all three read higher with the head/fog lights and a/c on.
Another proud dues-paying member.
1987 Turbo Coupe w/T5OD, 8.8 axle, grey smoke; most options. Got it in 1991 with 41K miles: 3 turbos, 2 heater cores, 3 T5OD full rebuilds, 6 clutches, 1 head gasket, 2 Teves II ABS units, etc. later....
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andrewjs18
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Joined:
Aug 2012
Philadelphia, PA
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(11-04-2019, 08:10 AM)anasazi4st Wrote: (11-02-2019, 03:05 PM)Jeff K Wrote: Yup the thing with the 9 V battery connector is the IVR.
I remember seeing some solid state IVRs a year or 2 ago, but dont remember what I searched for, as I wasnt going to buy any anyway since I built my own.
Jeff:
Can you share with us the schematic and parts you used to build your own?
I replaced mine years ago with a new OEM one, but the gauges are starting to act finicky again—all three read higher with the head/fog lights and a/c on.
this might be it: https://turbotbird.com/thread-new-design...ivr--35804
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Jeff K
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Joined:
Apr 2001
Milwaukee, WI
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Yup, Andrew, that is the article...... I forgot that I wrote that years ago!
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.
11 Crown Vic Interceptor
14 Toyota Camry (wifes car)
95 Taurus GL Vulcan winter beater
67 Honda 450 Super Sport - completely customized
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anasazi4st
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Joined:
Feb 2015
Phoenix, AZ
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11-05-2019, 08:44 AM
(This post was last modified: 11-05-2019, 08:44 AM by anasazi4st.)
(11-04-2019, 12:46 PM)Jeff K Wrote: Yup, Andrew, that is the article...... I forgot that I wrote that years ago! Nice! Thanks to both you and Andrew for that!
Another proud dues-paying member.
1987 Turbo Coupe w/T5OD, 8.8 axle, grey smoke; most options. Got it in 1991 with 41K miles: 3 turbos, 2 heater cores, 3 T5OD full rebuilds, 6 clutches, 1 head gasket, 2 Teves II ABS units, etc. later....
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