North American Turbocoupe Organization



have no spark
Machzman Offline
Senior Member
#1
well been along time since I have really been here but been resently putting the tbird back together as its been done for like 2 yrs now,anyways finally got it back together and now I have got no spark at all, now would the TFI go bad from just sitting? What I did just notice was the engine ground not hooked up would that maybe cause the issue? I also replaced the timing belt due to it broke awhile back pretty sure got that all on right, anyways any ideas would be great guys.... thanks Rod
Trying to get under 13sec.http://www.cardomain.com/ride/2546941/1986-ford-thunderbird
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Machzman Offline
Senior Member
#2
Trying to get under 13sec.http://www.cardomain.com/ride/2546941/1986-ford-thunderbird
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Pete D Offline
Administrator
#3
Check your email
Pete Dunham


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Machzman Offline
Senior Member
#4
thank you Pete, going to try it right now
Trying to get under 13sec.http://www.cardomain.com/ride/2546941/1986-ford-thunderbird
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Machzman Offline
Senior Member
#5
well still trying to figure this out, have someone turn it over for me and i get a spark on #1 cyl but then it quits and dont spark again, when we turn car completely off and try again it will spark again (once) took me tfi off and had it tested and its good nothing wrong there, now would the tps cause this? also my O2 is not hooked up yet anychance that might do it? Need a little help here please...thx Rod
Trying to get under 13sec.http://www.cardomain.com/ride/2546941/1986-ford-thunderbird
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Jeff K Online
Administrator
#6
There is no realistic test for a bad TFI, other than to try a known good one. The "TFI testers" used by parts stores is almost worthless. Does the tach jump during crank? PIP is almost as likely to fail as TFI.
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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Machzman Offline
Senior Member
#7
Hey Jeff,well thats what I did Autozone tested it for me and said it was good,also when cranking over the tach does not move,really looking foward to getting it running again but sure is dissappointing when you cant figure stuff out. Wife has been trying to get me to get rid of this car for 2 yrs now Sad so I really need to get this figured out.....Rod
Trying to get under 13sec.http://www.cardomain.com/ride/2546941/1986-ford-thunderbird
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zip Offline
Member
#8
When you have no spark, check to see if you are losing power or the ground at the coil. If you lose power then check the ignition switch. Check for ground with an LED test light or 12v LED(Radio Shack). You should see the LED blink while cranking. If it doesn't blink then you have a problem with the TFI or PIP.
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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Machzman Offline
Senior Member
#9
well just replaced the pip this afternoon with a new one figured it cant hurt, anyways still no spark, also checked for power with key on to the tfi and coil both have power, its got plenty of fuel pressure, come on guys dont want the wife to win here and I have to get rid of it...thx Rod
Trying to get under 13sec.http://www.cardomain.com/ride/2546941/1986-ford-thunderbird
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zip Offline
Member
#10
You need to check if the coil is receiving the ground signal which makes it fire. You can do this using a 12v LED or LED test light. You can use a regular test light for this first test. Connect the neg lead of the LED/test light to the second wire from the bottom, on the TFI plug and the other lead to 12v. Crank the engine, if the LED/light blinks your PIP/TFI are good and your coil is bad. IF the light doesn't blink, connect the neg lead of the LED to the top wire of the TFI plug. Must use a LED for this test.Crank engine, if the LED blinks, your PIP is good and your TFI is bad. If the LED doesn't blink, your PIP is bad.

Good luck
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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