North American Turbocoupe Organization



Eletronic/TFI/now idle problem, HELP!!??!!??!!
BJL Offline
Moderator
#1
Ok this is really hard to explain what is happing but my car has a funny problem, and i been trying to find out since i started driving the car in Dec.
Well it first started one mornign when i went to warm the car up i heard it go into a idle stumbling but it would catch it and come back up(like as if the tps was out of adjustment
), Well it did it many times for alike 30seconds to a min, i dint think nothing of it , so i went on my way to school
leaving school i let the car warm up for like 2mins and wen t on my way, as i got on to this one road , bout 5 min later, the car start bucking between 3500 4500 rpm, then it went up to between 4000rpm top 5000 rpm, then i dont go past 5000rpm , etc etc
since i noticed it would go up in rpm ranges after time i let the car sit till the time it started that idle "stumble and climb", and started to leave, it bucked the car like i was riding a bronco, ok so it bucking like the i was the day before, i noticed as time went on or the car warm up it would raise the rpm range when it would buck and that.
Well i just learned to let the car warm up of or about 10mins to 15misn each time I was dead cold, problem solved, hahaha for now
Well as it got warmer i let the car warm up for less and less, didn't notice it again, thought i had it solved
until i changed the oil one day and noticed the spout connector missing
when i notice it missing, i new it was there two months before (when i would let the car warm up for a long time)
i was told you should have one on the car cuz the computer cant control the timing and stuff, so i grabbed the one off my dads 88 Tbird with a 5.0l, well it works and better then nothing
ok since i out a spout connector back in it, i have the bucking and stumble thing again, but it usually take about 2mins to go through its "fit" (as it was nickname by my dad)
i been putting up with that since April
but now when it starts to stumble and stall out it does stall out completely now
but it will start right back up
now im afraid it will just get worse and worse as time goes on , so i need to fix this problem
BTW, not a good thing to have happen when i have a beautiful girl in the car and it starts bucking, ughh this car is killing me
Since this is out of my league, but i now it parts of the computer controlled timing, i need soem seriuos help
so any minds that have an idea please help!!!
also i was told it sounds like my computer cant keep its memory and it trying to learn a cold start up ( the car was sitting for 2-3years in a field untouched before i got it in dec.th3en resurrected it from the dead, that's story is in the showroom under my name Brian Larkin)

Thanks in Advance! Brian

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1988 Turbo Coupe 5spd, dark blue
1983 Turbo Coupe 5spd, red
Both Are Up For Sale http://www.crazydriver358.5u.com

[This message has been edited by BJL (edited 08-04-2001).]
Brian J Larkin
88TC 320k miles
T3, FMIC ,3in stinger exhaust, gillis,
255 walbro, afpr, 5spd swap,spec clutch, sn95 5 lug,.
89 Cougar XR7 3.8SC Auto
95 Ranger Splash 3.0 auto
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Pete D Offline
Administrator
#2
You need to pull the codes and see what comes up. I e-mailed you something on that.

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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. 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 190 pump and T-3. Centerforce II, KB subs and jack rails.
Pete Dunham


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Jeff K Online
Administrator
#3
Have you given the IAB and throttle body / throttle plate a good cleaning?? THe idle thing sounds like a classic dirty IAB / TB. The high RPM miss thing sounds like bad plug wires / plugs / cap / rotor. DO a complete tune up with Mororcraft parts, and if that doesnt cure it, I would try a new Motorcraft TFI. Also check the TFI connector for loose / dirty pins. Also check batt, engine, frame grounds.

As Pete suggested, run the codes, and look for a KOEO continuous memory code 14 -- PIP sensor problem. If you get that code, it could be a bad PIP sensor, but bad plug wires / plugs / cap / rotor can also cause this code as the bad wires apparently generate EMI which affects the low voltage PIP signal. When I first got my TC, I had a code 14, so I replaced the PIP (actually the whole dist -- big $$), and problem, code 14 were still there. Replaced the plug wires with Motorcraft, and the miss and code 14 went away, never to return.

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Jeff Korn

88 Turbo Coupe: Intake and exhaust mods, T3 turbo at 20 psi, forced air intercooler, water injection, bypass valve, Ranger roller cam, subframes, etc., etc.. // 86 Tbird 5.0 (original owner): intake, exhaust, valvetrain mods, 100 HP nitrous, ignition, gears, suspension, etc., etc.... // 91 Escort: Bone stock winter car // 00 Windstar (wifes vehicle)
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.
05 Taurus SEL Duratec daily driver
04 Taurus Duratec (wifes car)
02 Pontiac Grand Prix GT
95 Taurus GL Vulcan winter beater
67 Honda 450 Super Sport - completely customized
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TurboCoupe50 Offline
Posting Freak
#4
I've had two TCs that acted just as you describe. Both had a black aftermarket TFI module. When I removed them they had made in China stamped on the back side. A Motorcraft module fixed the problem.
1988 Turbo Coupe331 AOD

1972 Comet GT

1969 Fairlane Cobra 428CJ 4-Speed
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Mr. Sam Ford Offline
Senior Member
#5
Man, can I relate. I had EXACTLY the same problem, I fought it for a year (yep, I warmed the car up everytime I drove it cold for a year). Only Nate K was able to help me (I still will never forget that, thanks Nate) I replaced the TFI module and PIP 3 times before I finally went with Ford parts and my problem was cured. Scan for codes and see if you have a Code 14, as Jeff stated, it could be a bad PIP, or other ignition problem. My money is on the PIP and/or TFI. It's usually best to replace them both at the same time.
I think we need to have a FAQ to answer common questions and problems, as I swear this problem is posted nearly every day here or on TurboFord. I bet half of my posts have been responding to people with this problem! I am the warm-up ignition stutter guy LOL Good luck, let us know what you find B

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'88 Thunderbird TC
misc. mods
'86 Mustang GT
'88 Thunderbird TC, daily headache with a few mods, 14.65 and still not happy Smile

'86 Mustang GT, daily transport, fresh 302, Twisted Wedge heads, Track Heat intake, custom cam, all the associated goodies, 4.10s, hoping for mid 12s n/a
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BJL Offline
Moderator
#6
I dont mean to be like saying what touy r are saying isnt true, but does it do the rpm thing, like go up with rpm as the engien warmns up/time goes on ????. After it goes throught that the car ruins perfect, lieka c ahmp, btu its lieka tmnp problem, and now i retrrofiteds myt A/c today,w ell i had A/C fdor a few mins the the ocmptressor stop, and wlel in the way hoem it poped back on, so i think im having electricaly problems. but i work on cars everyday and weorking on yien is soemthign i dotn want to do. i about to send it out and pay hundreds of dallors to get everythign fixed. i try to runs the codes tonight with the jumper wire. i post my findings ASAP!

Brian

------------------
1988 Turbo Coupe 5spd, dark blue
1983 Turbo Coupe 5spd, red
Both Are Up For Sale
http://www.crazydriver358.5u.com
Brian J Larkin
88TC 320k miles
T3, FMIC ,3in stinger exhaust, gillis,
255 walbro, afpr, 5spd swap,spec clutch, sn95 5 lug,.
89 Cougar XR7 3.8SC Auto
95 Ranger Splash 3.0 auto
Reply

BJL Offline
Moderator
#7
Ran Code check,
1st run KOEOFF 67: nuetral switch,. a/c press high
2nr run KOEOFF 67
3rd run KOEOFF 11Confusedystem pass

GRR!!!!!!, im really want to sell this thing, ugh why does it give me so many problems?
now the bucking is gettign worse, and god i dont wanna spend 300 for a tfi, pip, and complete tune-up
this is muy only mode of transportation
and now i dont have a car to use if this one dies,
HELP!!!!!!!!!
broke UGH!!!!!

Brian
(gotta keep smiling, be happy, happy, happy is good, car is bad!!!!!, im gonan go insane cuz of this car!)
Brian J Larkin
88TC 320k miles
T3, FMIC ,3in stinger exhaust, gillis,
255 walbro, afpr, 5spd swap,spec clutch, sn95 5 lug,.
89 Cougar XR7 3.8SC Auto
95 Ranger Splash 3.0 auto
Reply

Mr. Sam Ford Offline
Senior Member
#8
Quote:Originally posted by BJL:
I dont mean to be like saying what touy r are saying isnt true, but does it do the rpm thing, like go up with rpm as the engien warmns up/time goes on ????. After it goes throught that the car ruins perfect, lieka c ahmp


Yep, exactly. It started at idle, then gradually went up until it stopped at about 5000 RPM as the car warmed up. That's why I think you have the same problem I had. Strange that you didn't set a code 14. Maybe I'm wrong, but I know what I would do if it were my car. If you don't want to spring for all new parts, swap out the distributor/TFI with a junkyard piece or the setup from your '83 if it's the same and see if that fixes it

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'88 Thunderbird TC
misc. mods
'86 Mustang GT

[This message has been edited by Mr. Sam Ford (edited 08-06-2001).]
'88 Thunderbird TC, daily headache with a few mods, 14.65 and still not happy Smile

'86 Mustang GT, daily transport, fresh 302, Twisted Wedge heads, Track Heat intake, custom cam, all the associated goodies, 4.10s, hoping for mid 12s n/a
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