North American Turbocoupe Organization



T/C ELECTRICAL GURU'S
TRUEBLUE Offline
Junior Member
#1
O for about a mounth now I have been fighting this....
ok here we go as best asI cane describe it.....

This is a 87 T/C anyway here is what I can make of it..when you start it the car misses and runs on 3 injectors,after it warms up then it idles on all 4 but if you give it throttle more that 2700 it stalls,if you snap the throtle it sputters and stalls...ok her is the list or what has been done.....255walbro afpr sext to 40 w/o vac. motorcraft ignition cap,wires,dist. checked ecu with a known good unit,as well as the ircm,compression is 130 1st crank 150 second on all cylinders,vam is good,and no codes on koeo can't do koer because ....right "it will stall!!!"
oops motorcraft tfi also....swapped out the injector harness also...this just suddenly hapened please help!!!!!!!

thank you Ed.
TOO MUCH IS NEVER ENOUGH! 3.64,T5,Front Coilovers 245-45-16 on 16x8s 89 MERKUR 302 9.7-1, AFR 185s,comp cam 284hr,
comp cam 1.6 gold rockers,Parker Funnel Web converted to F.I.,35s,Equal length headers,3" Y to 3" out,Controlled by Megasquirt&Spark Extra
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Turboeric Offline
Junior Member
#2
When you say 3 injectors was that verified? I ask because from the EEC there are two injector driver output lines. Each line powers 2 injectors.
1988 TC, T3/4, 3", 2 1/2 w/aero chambers, RR+, E6, intake, head porting, 55lbs, K&N, stage III, "tuned" eec, 80mm MAF, frt mnt, big valves.
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TRUEBLUE Offline
Junior Member
#3
OK I SAW THAT IN THE WIRING DIAGRAM,not yelling ok when i unplug#1 it will not change above 2700rpm,but @ilde will stall,i swapped 1 with 4 and it does the same thing so that lead me to believe that it is the harness..I think...lol because I'm lost!!!
TOO MUCH IS NEVER ENOUGH! 3.64,T5,Front Coilovers 245-45-16 on 16x8s 89 MERKUR 302 9.7-1, AFR 185s,comp cam 284hr,
comp cam 1.6 gold rockers,Parker Funnel Web converted to F.I.,35s,Equal length headers,3" Y to 3" out,Controlled by Megasquirt&Spark Extra
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Hawk Offline
Senior Member
#4
You may be running on three injectors. Check the resistance across the two terminals of each injector. It should be 2.8 OHMs across each injector. I have an 86 TC that just fried 3 injectors in a split second. I've been going to write something up for the trouble shooting section on that incident. What I discovered is that if you get a big enough electrical surge through the wiring the injectors will sustain damage.

Hawk
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