North American Turbocoupe Organization

1983 stock turbo coupe wont stay running.
Cowboy Cody Offline
Junior Member
I have a 1983 turbo coupe that wont stay running. I can get it started and it will idle rough, bouncing back and forth between 500 and 800 rpms, and then eventually die after 15 to 30 seconds. If i put my foot on the gas pedal it will die imediatley. I can keep it running by putting startingfluid through the intake and rev it as much as i want but without starting fluid it will die. The parts ive changed so far are fuel pump both inline and in tank, pressure regulator and injectors. What is causing this abnormal behavior?

anasazi4st Offline
Senior Member
Cowboy Cody Wrote:The parts ive changed so far are fuel pump both inline and in tank, pressure regulator and injectors. What is causing this abnormal behavior?
Have you pulled any codes yet? By that I mean, connected to the EEC-IV computer in such a way that will produce engine error codes that you can then use to pinpoint the problems.

I’m guessing based on your post that you either a) are unaware of EEC-IV error codes; or b) are aware but have not run them yet. This YouTube video is mostly spot on, but there are some changes you’d need to make for our cars: When the Engine ID (Check Engine light flashes TWICE—1/2 the number of Cylinders) is displayed you need to mash down on the Brake pedal. When the single flash occurs you then need to hit the gas pedal hard for WOT (wide open throttle). That’s it, as shown in the video the codes are displayed through Check Engine light flashes.

The resulting codes are found HERE. BTW, the anagram KOEO stands for Key On Engine Off. You’ll be looking for the KOER (Key On Engine Running) results.

This should get you on the repair path.

Another proud dues-paying member.

1987 Turbo Coupe w/T5OD, 8.8 axle, grey smoke; most options. Got it in 1991 with 41K miles: 3 turbos, 2 heater cores, 3 T5OD full rebuilds, 6 clutches, 1 head gasket, 2 Teves II ABS units, etc. later....

Jeff K Offline
You obviously have a fuel supply problem if it runs on starting fluid.

Check fuel pressure. Just because new pumps installed doesnt mean they are working correctly.

Check voltage at each pump. You can run the pumps continuously by grounding the bottom right pin in the EEC TEST connector (brown wire) with key in RUN.

Use a NOID light to be sure the injectors are firing.
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.
11 Crown Vic Interceptor
14 Toyota Camry (wifes car)
95 Taurus GL Vulcan winter beater
67 Honda 450 Super Sport - completely customized

RC Martin Offline
Posting Freak
Has anything been changed or messed with since it was running well the last time?
Thunderbird Turbo Coupe, Bright Canyon Red TuTone, Desert Tan Interior; 1 of 7 in this combo in 1984 according to Marti.  1 of 13,361 TCs in 84.
   Rebuilt, 3-Angle Valve Job, SYB37 "OE/Small" Slider Cam
   Full 3" Stinger Exhaust to Flowmaster 40, Gnari FMIC/Recirc/BPV, MBC @ 18psi, RF-E6 Manifold, Remote-Mount TFI, PC1 and Flowed 35# Injectors, Inline Walboro 255HP, Kirban AFPR
   Rebuilt Suspension -- KYB & Energy Suspension

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