North American Turbocoupe Organization



No Fire, No Start
5.0TurboCoupe1988 Offline
Posting Freak
#1
i know i have read about this problem before but the new search function leaves a lot to be desired.

was running fine. parked for a couple days and no start, no fire. cranks but doesn't have fire to the plugs. cooling fan stays on when ignition switch is on now too. first time that has happened. changed IRCM, checked TFI and it passed. getting power to the TFI through the harness. that's as far as i've gotten so far. anybody?
1988 TC 2.3/5-Speed, 148K
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zip Offline
Member
#2
Check if the PIP is sending out a signal, the info on how to test it is located in the FAQ section. If you dont have a 12V led for the test you can listen for the fuel pump to run while you are cranking. The fuel pump will only run if the ECM gets a signal from the PIP. I would also take a look at your igntion switch to see if it is falling apart.
Matt
86 TC 5spd:QH/SD,Walbro190,CFI 52#, AFPR,WB,FMIC,3"dp to axle, .63 T3, E6,Stock Longblock.
Shelf:N/A 2.3, Die grinder, Carbide Burrs.
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5.0TurboCoupe1988 Offline
Posting Freak
#3
why is the fan staying on?
1988 TC 2.3/5-Speed, 148K
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5.0TurboCoupe1988 Offline
Posting Freak
#4
ok....tried a remanufactured distributor with new PIP and ignition module. tried 4 different IRCM's, 2 coils. coil is getting power from ignition switch and fuel pressure is correct. still no fire to the plug. also, the cooling fan staying on when the ignition switch is on is puzzling. only started that when i tried to start it and no fire...
1988 TC 2.3/5-Speed, 148K
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Jeff K Online
Administrator
#5
Cooling fan on with key on along with the no start could be either a bad PCM ground or failed PCM.
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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5.0TurboCoupe1988 Offline
Posting Freak
#6
that's what i was afraid of. i already sanded the spot where the ground next to the PCM is located. anything else i should look at before i get another PCM?
1988 TC 2.3/5-Speed, 148K
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5.0TurboCoupe1988 Offline
Posting Freak
#7
it was the PCM. thanks, jeff. i'm still trying to figure out how it went bad while parked...
1988 TC 2.3/5-Speed, 148K
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Jeff K Online
Administrator
#8
Open it up and have a look..... not uncommon for some of the electrolytic caps to fail. They will likely be oozing out fluid. They can be replaced. Remember the PCM has 12V applied to it all the time to keep the adaptives like fuel trim, etc.
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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