North American Turbocoupe Organization



vaccum modulator
OU812MACH1 Offline
Senior Member
#1
Can someone give me the part # for the correct tranz vaccum
modulator? I've had my A4LD tranz all redone but I have a shifting issue. Turn the boost under 10 psi and the shifting is all good. But as soon as u turn the boost up near 15 psi or heavy acceleration. The thing either won't shift or u have to lift to make it shift. My guy builds all kinds of performance OD transmissions for newer cars and trucks, but this one has him scratching his head. I'm thinking I have the wrong modulator.
o4 mach-1,white,4at 1 of 169 ,MAC air filter and x-pipe, SCT tune / o9 BMW 328 M-SPORT, white, 6at/ 87 Turbocoupe ,white,4at,KIRBAN afr,GILLIS boost valve,Garrett/SVO T3,cold air,3" STINGER down pipe and tail pipe, DYNOMAX ultra flow stainless muffler, Walbro 255L fuel pump,cleaned and flowed injectors,STINGER BOV, built A4LD trans w/all
4x4 Explorer guts, K245/F57FA torque converter.
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TurboBoost88 Offline
Member
#2
what year tc ?
88 TurboCoupe,Midnight Metallic Blue on Blue cloth, 140 m.p.h. speedo, 96,000 miles, 5spd. Gills valve, many new parts waiting to be installed..88 TC, Silver, 5spd, My first car, wish I still had that one! Built for customers: 67 Ford Fairlane,69 Mach I,70 Mach I Clone,95 Ranger 2.3/5.0 EFI Conversion,99 Cobra Procharger SC-1 Install/Tune,Factory Five Racing Mark III Cobra #4114,1955 Black on Black Thunderbird for local Ford Dealer owner's wife.
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86XR7auto Offline
Moderator
#3
1987...
86XR7 in pieces...old time [email protected] http://www.youtube.com/watch?v=kGsz7PdEqTI 88TC stock Red RHSC [email protected], 01 Z71=Nice winter ride, 01 CVLX w/HPP wifes ride!
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TurboBoost88 Offline
Member
#4
original ford number for a 1987-1988

e4sz-7a377-a or motorcraft # tm-70.

this is from the last microfiche ford issued, so the part numbers could have been superseded.

hope this helps.
88 TurboCoupe,Midnight Metallic Blue on Blue cloth, 140 m.p.h. speedo, 96,000 miles, 5spd. Gills valve, many new parts waiting to be installed..88 TC, Silver, 5spd, My first car, wish I still had that one! Built for customers: 67 Ford Fairlane,69 Mach I,70 Mach I Clone,95 Ranger 2.3/5.0 EFI Conversion,99 Cobra Procharger SC-1 Install/Tune,Factory Five Racing Mark III Cobra #4114,1955 Black on Black Thunderbird for local Ford Dealer owner's wife.
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Dan S Offline
Administrator
#5
Several parts houses have the modulator listed as "no longer available". Carquest lists the part under #57-7028 as a cross over to the Ford part number E4AZ-A.

If all else fails email this guy to see if he can help.
[email protected] (Performance Automatics)
Dan S
Custom 88 TC, Mandarin Copper Pearl Metallic
http://natomessageboard.com/ubbthreads.p...5#comments
1972 Ford F-100 SWB Styleside
2015 Lincoln MKC 2.3 EcoBoost AWD
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TurboBoost88 Offline
Member
#6
rockauto has it in stock. part # tm-52, $13.87.
88 TurboCoupe,Midnight Metallic Blue on Blue cloth, 140 m.p.h. speedo, 96,000 miles, 5spd. Gills valve, many new parts waiting to be installed..88 TC, Silver, 5spd, My first car, wish I still had that one! Built for customers: 67 Ford Fairlane,69 Mach I,70 Mach I Clone,95 Ranger 2.3/5.0 EFI Conversion,99 Cobra Procharger SC-1 Install/Tune,Factory Five Racing Mark III Cobra #4114,1955 Black on Black Thunderbird for local Ford Dealer owner's wife.
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