Trouble Shooting a 1989 Supra Turbo

nat6c · 01-02-2006, 05:45 AM

Hey did you ever figure out your problem? I'm having the same issue. just finished rebuilding a 7M-GTE, brand new everything. finally got all the vac hoses coolant etc routed correctly. but i get turnover all day with no start. i do see/smell fuel in chambers and exhaust. i've checked all plugs, i DO get spark. tried numerous adjustments to CPS. after 3 hours of screwing around i finally got it to we're it'll put put. crank....... about 5 sec. put put. crank.... engine timing perfect. checked already. tried cleaning EVERY connector... especially coils with electrical cleaner. all connector snap in place and have good contact. tried disc/reconnecting cold start injector... no luck. help please

Side Note: engine in car, no tranny mounted, but i connected the reveres and rear speed sensor JUST IN CASE for grounds ect.all ground straps connected,

except i dont' know what the nipple on bottome of wrinkle hose (where stock BOV, MAF and turbo inlet hook up. so i plugged it. i had no other open vac/boost lines. everythign connected. tried gettign ecu to throw codes and i get nothing unless i press throttle IN car all the way down... then i get a TPS code.... also if i floor it. the TEMS( elec. suspension adjustent???) it's at 2 LEDs lit, but when pressed to near/at full throttle it shows a 3rd light. just wanna make sure its' normal. THanks for any help!!!.

Los

suprra_girl · 01-02-2006, 07:59 AM

wow... sounds like some intense problems you guys have

14 is ignition signal

Diagnosis
No "IGF" signal to ECU "A" times in succession.
A = 6-8 (7M-GE)
A= 3 (7M-GTE)

Trouble Area
Igniter and ignition coil circuit
Igniter and ignition coil
ECU

make sure you coil packs are grounded

is anyone close to you that has a spare ignitor you can try?

kikwear002 · 01-02-2006, 07:20 PM

i had the same code along with code 51, sometimes the car would start then stop other times it wouldnt start just turn over.

the problem which i think is very common is the coils get corrored and only a small percent of the spark and get through thats why it starts and stops.

I would recommend taking the coils off and inspecting them / clean them out with a sandblaster and baking soda. check the ends of the wires too.

mrnickleye · 01-02-2006, 08:34 PM

I just looked so the views would change from 666 to 667. Super-stician.

Darn...it didn't change the view count !!

01-02-2006, 07:59 AM	#2
suprra_girl 7M POWAH! ;) Join Date: Jun 2004 Location: New Zealand Posts: 2,312	wow... sounds like some intense problems you guys have 14 is ignition signal Diagnosis No "IGF" signal to ECU "A" times in succession. A = 6-8 (7M-GE) A= 3 (7M-GTE) Trouble Area Igniter and ignition coil circuit Igniter and ignition coil ECU make sure you coil packs are grounded is anyone close to you that has a spare ignitor you can try? __________________ Please use the forum to ask your questions as they will get replied to much faster than pming me Pics of my build. "Good girls are just bad girls that don't get caught" Do a diagnostic first!

01-02-2006, 08:34 PM	#4
mrnickleye 1000whp postwhore Join Date: Jun 2005 Location: Mojave Desert, Calif. Posts: 1,705	I just looked so the views would change from 666 to 667. Super-stician. Darn...it didn't change the view count !! __________________ Had a Red 1989 N/A. Automatic. Sports Pkg. w/wing. TEMS, and some nice MODS. Sold to a friend 10/08/08. Last edited by mrnickleye; 01-02-2006 at 08:36 PM.

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01-02-2006, 05:45 AM	#1
nat6c Stock Join Date: Jan 2006 Posts: 1	Hey did you ever figure out your problem? I'm having the same issue. just finished rebuilding a 7M-GTE, brand new everything. finally got all the vac hoses coolant etc routed correctly. but i get turnover all day with no start. i do see/smell fuel in chambers and exhaust. i've checked all plugs, i DO get spark. tried numerous adjustments to CPS. after 3 hours of screwing around i finally got it to we're it'll put put. crank....... about 5 sec. put put. crank.... engine timing perfect. checked already. tried cleaning EVERY connector... especially coils with electrical cleaner. all connector snap in place and have good contact. tried disc/reconnecting cold start injector... no luck. help please Side Note: engine in car, no tranny mounted, but i connected the reveres and rear speed sensor JUST IN CASE for grounds ect.all ground straps connected, except i dont' know what the nipple on bottome of wrinkle hose (where stock BOV, MAF and turbo inlet hook up. so i plugged it. i had no other open vac/boost lines. everythign connected. tried gettign ecu to throw codes and i get nothing unless i press throttle IN car all the way down... then i get a TPS code.... also if i floor it. the TEMS( elec. suspension adjustent???) it's at 2 LEDs lit, but when pressed to near/at full throttle it shows a 3rd light. just wanna make sure its' normal. THanks for any help!!!. Los

01-02-2006, 07:20 PM	#3
kikwear002 Intake Join Date: Dec 2005 Posts: 30	i had the same code along with code 51, sometimes the car would start then stop other times it wouldnt start just turn over. the problem which i think is very common is the coils get corrored and only a small percent of the spark and get through thats why it starts and stops. I would recommend taking the coils off and inspecting them / clean them out with a sandblaster and baking soda. check the ends of the wires too.