North American Turbocoupe Organization



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SC89TBC88 Offline
Junior Member
#1
My first post. I have an 88TC that I have owned since Nov 1991. It is the "Maroon" color with gray cloth interior, all original except for the "consumables" (brake pads, air filter, battery, etc.)

Has anyone used the DY1284 TFI module to replace the original. O'reilly has it available as a replacement. My car misses like it has hit a rev limiter as soon as the boost comes up even a little at any rpm. Plug wires (motorcraft), cap and rotor are all new. Any ideas. Thank you, Dennis
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Not B Anymore Offline
Administrator
#2
That is the correct part number. Are the actual plugs new-ish as well? TFI & PIP can cause all kinds of misfiring issues.

Welcome to the board!
Brian Leavitt
'86 TC 5-Speed -- MS2x w/COP | 83 lb. injectors | T3/T4 50 Trim Stage 3 .63AR | Full 3" Exhaust - No Cat | Motorsport FMIC | Ranger Roller | Ported E6 | Walbro 255HP | Kirban | 20psi | 120-amp 3G | 8.8" 3.55 rear | '03 Cobra Wheels
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Jeff K Offline
Administrator
#3
Welcome!

What brand / type / part number plugs are you using? What plug gap? These cars are VERY picky about plugs.

Have you run codes and looked for a CM code 16 (intermittent IDM failure) or 14 (intermittent loss of PIP signal)?
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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Pete D Offline
Administrator
#4
Welcome to the board. Run the codes as Jeff suggested. If it looks like a TFI issue then consider also changing the PIP. The factory recommends changing both together.
Pete Dunham


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SC89TBC88 Offline
Junior Member
#5
When I first started having trouble (a couple of months ago) the only code I got was a 11. I ran the codes again (after reading the above post's) and this time I got a 14 and 42 (42 condition probably caused by the bad PIP). I will be changing the PIP and TFI. Getting the 11 code originally threw me off. This should fix it-will let you all know. Thank you-Dennis
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SC89TBC88 Offline
Junior Member
#6
It has Champion plugs (don"t remember the number right now). What plug do you all recommend?
1988 Turbo Coupe
1989 Super Coupe
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Not B Anymore Offline
Administrator
#7
http://natomessageboard.com/ubbthreads.p...Post224222
Brian Leavitt
'86 TC 5-Speed -- MS2x w/COP | 83 lb. injectors | T3/T4 50 Trim Stage 3 .63AR | Full 3" Exhaust - No Cat | Motorsport FMIC | Ranger Roller | Ported E6 | Walbro 255HP | Kirban | 20psi | 120-amp 3G | 8.8" 3.55 rear | '03 Cobra Wheels
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Jeff K Offline
Administrator
#8
Get those Champion plugs out now. Champion plugs are only good for Chryslers and lawn mowers. Use either the stock plugs or NGK 2238.
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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SC89TBC88 Offline
Junior Member
#9
Well, I installed the new PIP and TFI (both Motorcraft) and new NGK plugs (2238's). The car has new Motorcraft wires, new dist. cap and rotor. Took it out and drove it, got out on the interstate and it ran perfect. About a half mile from home while pulling away from a stop sign it started missing badly, got home and it had that "acid" smell from missing so bad. Any ideas on where to look next?

Dennis
1988 Turbo Coupe
1989 Super Coupe
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SC89TBC88 Offline
Junior Member
#10
To add to my previous post; after sitting about an hour I started the car and drove to the hardware, about a mile away, it ran fine. On the way back it missed a bit. Maybe the new TFI module is bad? Should I go ahead and do the remote mount on the TFI? Thanks
1988 Turbo Coupe
1989 Super Coupe
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