Good info, thanks. That's pretty much what mine did too. It'd also work intermittently. I was able to source what I think is a red one from Rock Auto. Any idea what the electrical connector for that 3 inHg vacuum switch looks like? Maybe I can find that switch somewhere?
1985 Mustang GT conv. modified 4180C, Weiand Street Warrior intake, equal length headers, true dual exhaust, 3.55:1 8.8'' rear end, 2003 V6 T5, Ford Racing 10.5" clutch.
1998 Mustang GT auto. PI swapped. Daily beater
shift light
Don't mean to butt in, but would you guys happen to know if the shift light was operational with 4 speed cars, or if there is a top gear sensor for the SROD?
1983 3.8 V6
That's actually a good question, because if they are, then that would increase my chances of finding that vacuum switch for the shift light. It's darn near impossible to find.
1985 Mustang GT conv. modified 4180C, Weiand Street Warrior intake, equal length headers, true dual exhaust, 3.55:1 8.8'' rear end, 2003 V6 T5, Ford Racing 10.5" clutch.
1998 Mustang GT auto. PI swapped. Daily beater
Shift light? We don't need no stinkin shift light. Just twist the ears on that sucker till the oil pressure drops then shift!
My 84 has a space for it in the dashboard. However when I had my dash apart there was no wiring for it. I figured it was for gas mileage and smog restrictions in certain states. I think it was not always applied to all cars.
The shift light had nothing to do with emissions regs, it was a way to improve the car's EPA fuel economy
rating, which was a federal thing.
Cheers,
Jeff Cook
'85 GT Hatch, 5-speed T-Top, Eibachs, Konis, & ARE 5-Spokes ... '85 GT Vert, CFI/AOD, all factory...
'79 Fairmont StaWag, 5.0, 62K original miles ... '04 Azure Blue 40th Anny Mach 1, 37K original miles...
2012 F150 S-Crew 4x4 5.0 "Blue Coyote"... 65 coupe, 289 auto, Pony interior ... '67 coupe 6-cyl 4-speed ...
'68 Vert, Mexican block 307 4-speed... '71 Datsun 510 ...
And a 1-of-328 Deep Blue Pearl 2003 Marauder 4.6 DOHC, J-Mod, 4.10s and Lidio tune
The one in my 84 GT was never installed at the factory either.
1984 Mustang GT owned since 1991 (first car). Mercury Mountaineer GT-40P engine, some suspension mods, currently undergoing a five lug SN95 brake upgrade and more suspension mods. Some minor body and interior mods have been done as well.
2004 GT convertible, 2001 Taurus LX, 1994 F150, 1950 F-1 Ford Pickup
I primarily want to get mine working because it's a feature that my car came with and I'd like for it to work. I think it's kinda cool, really.
1985 Mustang GT conv. modified 4180C, Weiand Street Warrior intake, equal length headers, true dual exhaust, 3.55:1 8.8'' rear end, 2003 V6 T5, Ford Racing 10.5" clutch.
1998 Mustang GT auto. PI swapped. Daily beater
Does anyone have a picture of the vacuum sensor/switch that is supposed to be on the back of the driver's side strut tower? Mine is missing. Also, would anyone know where I could find another?
1985 Mustang GT conv. modified 4180C, Weiand Street Warrior intake, equal length headers, true dual exhaust, 3.55:1 8.8'' rear end, 2003 V6 T5, Ford Racing 10.5" clutch.
1998 Mustang GT auto. PI swapped. Daily beater
This is on my 84 5.0, don't know if this will help.
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Present: '84.5 Mustang GT T-top, '06 Mazdaspeed6
Past: '79 5.0 Capri, '86 Buick GN, '90 Mustang GT, '92 SHO, '95 SHO
Browse cover pages of my Fox Chassis related library
Here's a better pic showing part number.
Sent from my iPhone using Tapatalk
Present: '84.5 Mustang GT T-top, '06 Mazdaspeed6
Past: '79 5.0 Capri, '86 Buick GN, '90 Mustang GT, '92 SHO, '95 SHO
Browse cover pages of my Fox Chassis related library
they never have worked in just about all of my cars...even the new one i bought off the dealership floor.
I wonder if service managers got tired of customers coming in and complaining about the shift light, so they disabled the feature on all new cars that came onto the lot?Originally Posted by vascj
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Present: '84.5 Mustang GT T-top, '06 Mazdaspeed6
Past: '79 5.0 Capri, '86 Buick GN, '90 Mustang GT, '92 SHO, '95 SHO
Browse cover pages of my Fox Chassis related library
i wish I could find one of those.This is on my 84 5.0, don't know if this will help.
Sent from my iPhone using Tapatalk
1985 Mustang GT conv. modified 4180C, Weiand Street Warrior intake, equal length headers, true dual exhaust, 3.55:1 8.8'' rear end, 2003 V6 T5, Ford Racing 10.5" clutch.
1998 Mustang GT auto. PI swapped. Daily beater
It looks like mine had two vacuum switches/sensors. I have two connectors sitting there with nothing attached.
1985 Mustang GT conv. modified 4180C, Weiand Street Warrior intake, equal length headers, true dual exhaust, 3.55:1 8.8'' rear end, 2003 V6 T5, Ford Racing 10.5" clutch.
1998 Mustang GT auto. PI swapped. Daily beater
Does anyone know that that two terminal connector goes to in the previous pic? I currently have a black vacuum switch connected to it.
I was able to find the dual vacuum switch assembly and have my three terminal connector hooked up to it. My Shift light works now!
1985 Mustang GT conv. modified 4180C, Weiand Street Warrior intake, equal length headers, true dual exhaust, 3.55:1 8.8'' rear end, 2003 V6 T5, Ford Racing 10.5" clutch.
1998 Mustang GT auto. PI swapped. Daily beater
Where did you find the dual vacuum switch? Mine is bad and like you, if it's factory I want it to work as designed.
Another member here had one laying around. I put in a WTB thread about it in the classified section.
1985 Mustang GT conv. modified 4180C, Weiand Street Warrior intake, equal length headers, true dual exhaust, 3.55:1 8.8'' rear end, 2003 V6 T5, Ford Racing 10.5" clutch.
1998 Mustang GT auto. PI swapped. Daily beater
Any clue what the two terminal connector is for behind my driver's side strut tower?
1985 Mustang GT conv. modified 4180C, Weiand Street Warrior intake, equal length headers, true dual exhaust, 3.55:1 8.8'' rear end, 2003 V6 T5, Ford Racing 10.5" clutch.
1998 Mustang GT auto. PI swapped. Daily beater
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