North American Turbocoupe Organization



I'm back...and I need some help before I go crazy
**PathogeN** Offline
Member
#1
Well...I've been gone for a while...had some family issues related to the WTC crap. Been resolved, no casualties here (thank god, couple ppl in question for a while). Anyway, I got my fuel injector harness today, hooked it up and it ran great for about 15 mins (took it to get some air in the tires and some gas). Got back, shut it off and hit up some lunch. Went back out, started it up about an hour later and it didn't run for crap. Just like before...All rough and nasty, no power, and would hardly hold an idle. Like a hole or two wasn't firing (just like before the harness). Any ideas? Please? I mean I tore it apart a couple times and rechecked the harness and it didn't do anything to help. I'm at a total loss here

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87 TC 5-Speed. 5.0 T-5, .030 over 2.5 stroker, balanced, blueprinted, studded and strapped. Keith Black Forged Pistons, FMS Valves & FRPP springs. Gutted Upper, knifed lower & E6, Minor Head Porting. Esslinger alum. flywheel, FMS SVO clutch & plate, Esslinger cam pulley, unorthodox pulleys, K&N, VAM Mod, ETS 3" DP, Dual 2.5 dynomax, teflon impeller'd 15k mile IHI, Brembo evolution rotors & 4-piston calipers, HPM Rear lower C. Arms, Griggs front A Arms & K Member, Max. Motorsports Caster/Camber plates, Eibach pro kit, KYB AGX Struts, Tokico shocks & quads, Full KB Subframe, PST Polygraphite all around, Lincoln LSC anti-roll bar (f), 225/50zr16's. 2kWrms Infinity/Clarion Pro Audio Sound System

"Set gillis to Kill, prepare for launch"
88 Turbo Coupe (White)
88 Psudo Coupe (Silver LX)
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Pete D Offline
Administrator
#2
Give us some more info. What have you tried already? What have you found? Sticky IAC, EGR.


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88 TC X 2, 86 SVO, Main TC with K&N, 3"DP to 2.5"duals through Dynamax, Ric valve at 17+ and disconnected KS.
Elite Bodega 16" chrome wheels. Autometer pod w/ A/F and Vac/boost gauges.140 mph Motorsports Speedo New engine: Total Seal rings and TRW pistons, ported and polished head w/ cc'd chambers,1.59"exhausts, SS valves, gutted upper, knife edged lower, A-230 cam, Race Engineering Adj Cam Sprocket, Crowlers, ARP head studs, and rod bolts. Walbro 255 HP pump and Kirban adj FPR, T-3. Centerforce II, KB subs and jack rails.
Pete Dunham


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GT350R Offline
Senior Member
#3
Have you pulled thje plugs to read them and verify that any cylinders are acually not firing?
GT350R
(sold Sad ) 87 5speed, Motorsport head, [email protected]+2, [email protected], gutted or ported everything & all the typical junk.
84 Gt350 2.3T T-top
84 Turbo GT 418rwhp

My Garage
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**PathogeN** Offline
Member
#4
I did pull the plugs. 1 and 2 were dead. Dunno how the hell the car runs on 2 holes but i guess it does. Everything worked great when it ran right...I mean very strong (as it should be). What its doing: VERY rough. Put it to the floor it takes a good 30 secs to rev to 3000 rpm. Will drive, but max speed is about 10mph wide open, 15psi in 1st. IAC is good, TPS is good, VAM is good. Timing belt didn't slip or anything. Thats what I've got tonight...more work tomorrow and I'll try to eliminate some more.

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87 TC 5-Speed. 5.0 T-5, .030 over 2.5 stroker, balanced, blueprinted, studded and strapped. Keith Black Forged Pistons, FMS Valves & FRPP springs. Gutted Upper, knifed lower & E6, Minor Head Porting. Esslinger alum. flywheel, FMS SVO clutch & plate, Esslinger cam pulley, unorthodox pulleys, K&N, VAM Mod, ETS 3" DP, Dual 2.5 dynomax, teflon impeller'd 15k mile IHI, Brembo evolution rotors & 4-piston calipers, HPM Rear lower C. Arms, Griggs front A Arms & K Member, Max. Motorsports Caster/Camber plates, Eibach pro kit, KYB AGX Struts, Tokico shocks & quads, Full KB Subframe, PST Polygraphite all around, Lincoln LSC anti-roll bar (f), 225/50zr16's. 2kWrms Infinity/Clarion Pro Audio Sound System

"Set gillis to Kill, prepare for launch"
88 Turbo Coupe (White)
88 Psudo Coupe (Silver LX)
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Noname
Guest
#5
Have you limited it to a spark, fuel or compression problem yet. Thats the first thing i wound figer out.
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**PathogeN** Offline
Member
#6
Got spark and got compression. That leaves fuel. Either harness, injectors, pump etc. Thing is it ran perfectly and then stopped. For no good reason (didn't drive it hard or anything). Leads me to believe its a wiring issue.

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87 TC 5-Speed. 5.0 T-5, .030 over 2.5 stroker, balanced, blueprinted, studded and strapped. Keith Black Forged Pistons, FMS Valves & FRPP springs. Gutted Upper, knifed lower & E6, Minor Head Porting. Esslinger alum. flywheel, FMS SVO clutch & plate, Esslinger cam pulley, unorthodox pulleys, K&N, VAM Mod, ETS 3" DP, Dual 2.5 dynomax, teflon impeller'd 15k mile IHI, Brembo evolution rotors & 4-piston calipers, HPM Rear lower C. Arms, Griggs front A Arms & K Member, Max. Motorsports Caster/Camber plates, Eibach pro kit, KYB AGX Struts, Tokico shocks & quads, Full KB Subframe, PST Polygraphite all around, Lincoln LSC anti-roll bar (f), 225/50zr16's. 2kWrms Infinity/Clarion Pro Audio Sound System

"Set gillis to Kill, prepare for launch"
88 Turbo Coupe (White)
88 Psudo Coupe (Silver LX)
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TurboCoupe50 Offline
Posting Freak
#7
Pin 58 of the EEC feeds injectors 1 & 2, so it is probably a wiring problem. You can connect a test light on the injector connector to see if you have the pulse. If you want to be cheap like me, just take a #194 bulb and stretch the wires out so they will plug into the connector. The bulb should blink while cranking/idleing. You can also check for the pulse at the computer. Connect one lead of the test light to 12v source the other to pin 58. I doubt the injectors both would bad but, if you do have the pulse, check the resistance of the injectors with an ohm meter, each should be 2.5 ohms.

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Two 1988 Turbo Coupes ..... yea one of em has a 5.0 And runs 13.3s
1988 Turbo Coupe331 AOD

1972 Comet GT

1969 Fairlane Cobra 428CJ 4-Speed
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Noname
Guest
#8
I had a similar problem a car. All it turned out to be was the 2 injectors came loose from the harness. I cleaned the connectors and put them back together and it was fine.
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**PathogeN** Offline
Member
#9
OK...light test says 1 and 2 connectors are bad. Same with the old harness. I guess the problem lies elsewhere. Ideas as to where I should go from here? Does this indicate a wiring issue with the main harness or a bad computer or something?
88 Turbo Coupe (White)
88 Psudo Coupe (Silver LX)
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TurboCoupe50 Offline
Posting Freak
#10
It may well be the wiring, but at this point I would check for the pulse at pin 58 of the computer. Connect one lead of the test light to 12v source(battery, cigarette lighter, etc)the other to pin 58(tan wire),(pin 59 drives inj 3 & 4 brown/yellow wire). When cranking/idling, there should be a pulse, if is present it is a wiring problem beteween the computer and the injectors, if not the injector driver(transistor) in the computer is probably bad.

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Two 1988 Turbo Coupes ..... yea one of em has a 5.0 And runs 13.3s




[This message has been edited by TurboCoupe50 (edited 10-07-2001).]
1988 Turbo Coupe331 AOD

1972 Comet GT

1969 Fairlane Cobra 428CJ 4-Speed
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