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Old 09-17-2010, 12:45 AM   #1
localrager
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Hello all, my name is Keith and I Just picked up a 94 TT yesterday. Car is mostly stock. 140k. Rebuilt at 93k.
Today (day after i get it) I get the Master Warning light. I check it.. "Check Engine" light flashes 1x then 4x so im guessing code 14 {Ignition signal}. What does this mean?
Also the "O/D off" light flashes 8x then flashes 9x. I dont know what that means if anything.
The car ran fine during test drive and the 1 1/2 hr drive home. No issues whatsoever.
Im new to the Supra so any help will be appreciated.
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Old 09-17-2010, 02:23 AM   #2
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Quote:
Originally Posted by localrager View Post
Hello all, my name is Keith and I Just picked up a 94 TT yesterday. Car is mostly stock. 140k. Rebuilt at 93k.
Today (day after i get it) I get the Master Warning light. I check it.. "Check Engine" light flashes 1x then 4x so im guessing code 14 {Ignition signal}. What does this mean?
Also the "O/D off" light flashes 8x then flashes 9x. I dont know what that means if anything.
The car ran fine during test drive and the 1 1/2 hr drive home. No issues whatsoever.
Im new to the Supra so any help will be appreciated.
According to this...
http://www.mkiv.com/techarticles/eng...bd1_codes.html
... you have one ore more of the following:
  • Open or short in IGF circuit from igniter to ECM
  • Igniter (problem)
  • ECM (problem)
Most likely it's the first or second possibility. If you know of someone else with an Mkiv TT, try swapping out with his/her ignitor.
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Displacement is no replacement for boost.
Life begins at 30psi.


NB: Please consider posting any help requests in a new thread instead of asking me for help privately. About 99.9+% of the time, private help requests end up covering great information that could be very valuable to other forum members. If you have a good reason for needing the help request to be private, I'll consider it. If not, then why not give everyone else the opportunity to pitch in too, and/or learn from the information? Remember, there's no such thing as a dumb question. We're all here to help within this family of Supra owners.
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Old 09-17-2010, 03:31 PM   #3
localrager
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Quote:
Originally Posted by pwpanas View Post
According to this...
http://www.mkiv.com/techarticles/eng...bd1_codes.html

... you have one ore more of the following:
  • Open or short in IGF circuit from igniter to ECM
  • Igniter (problem)
  • ECM (problem)
Most likely it's the first or second possibility. If you know of someone else with an Mkiv TT, try swapping out with his/her ignitor.
Ok, so basically i should invest in the supra repair manual and trouble shoot this thing. Hopefully its just a bad Igniter.
Do you know what the flashing O/D light means? Perhaps its just telling me that the car is in "Test Mode"?
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Old 09-17-2010, 11:15 PM   #4
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Ok so i start the car today after jostling a few wires around now its giving me codes 25, 26 and still 14.
25 is lean
26 is rich
What the hell is going on with this car??
Could the new codes be due to the possible faulty igniter?

The plot thickens.. I pulled the plugs, they are all pretty bad. The strange thing was the first 4 plugs were Bosch Platinum FR7DP. The last 2 were Denso PK20R11.. Why? Why would the last 2 be different? Are they a hotter burning plug?

Last edited by pwpanas; 09-19-2010 at 02:18 AM.
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Old 09-19-2010, 02:21 AM   #5
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Quote:
Originally Posted by localrager View Post
Ok so i start the car today after jostling a few wires around now its giving me codes 25, 26 and still 14.
25 is lean
26 is rich
What the hell is going on with this car??
Could the new codes be due to the possible faulty igniter?

The plot thickens.. I pulled the plugs, they are all pretty bad. The strange thing was the first 4 plugs were Bosch Platinum FR7DP. The last 2 were Denso PK20R11.. Why? Why would the last 2 be different? Are they a hotter burning plug?
If the a/f is very lean, the spark may not ignite consistently. However, when the spark doesn't ignite, the exhaust is very rich (because no fuel was burned). Makes sense?
The plugs should not be different. Go with oem platinum plugs, or NGK 6097s.
__________________
Phil '94 Supra Turbo, 6spd, 'APU'+
Displacement is no replacement for boost.
Life begins at 30psi.


NB: Please consider posting any help requests in a new thread instead of asking me for help privately. About 99.9+% of the time, private help requests end up covering great information that could be very valuable to other forum members. If you have a good reason for needing the help request to be private, I'll consider it. If not, then why not give everyone else the opportunity to pitch in too, and/or learn from the information? Remember, there's no such thing as a dumb question. We're all here to help within this family of Supra owners.
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Old 09-19-2010, 11:59 PM   #6
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Quote:
Originally Posted by localrager View Post
Ok, so basically i should invest in the supra repair manual and trouble shoot this thing. Hopefully its just a bad Igniter.
Actually a new ignitor is over $400USD. Your least pricey option to correct is faulty wiring.
__________________
Phil '94 Supra Turbo, 6spd, 'APU'+
Displacement is no replacement for boost.
Life begins at 30psi.


NB: Please consider posting any help requests in a new thread instead of asking me for help privately. About 99.9+% of the time, private help requests end up covering great information that could be very valuable to other forum members. If you have a good reason for needing the help request to be private, I'll consider it. If not, then why not give everyone else the opportunity to pitch in too, and/or learn from the information? Remember, there's no such thing as a dumb question. We're all here to help within this family of Supra owners.
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