North American Turbocoupe Organization



a few probs with my 88
stormy69 Offline
Junior Member
#1
I have read all the faq's and i have done soem troubleshooting. i just wanted to get some more input.
fans, they didnt come on when i bought the car, the relay pack seemed to be the culprit. i replaced it with as spare i ad, at 210 on my infrared thermometer on the water pump, the large fan kicked in. with the a/c on, the large fan kicks in. it still gets too hot and the fan wont come on (259 the other day!). soooo, why doesnt the little fan come on and what would be the intermittent cause for the lare fan to not come on. on this, is there a sep temp sender for the fans and the guage?
also, the car runs nice (auto with 140k) but has some power issues at times above 3k-3.5k rpm, i think its the TPS and am replacing it today, any other ideas?
it makes 10lbs boost, is that right?
i have an LA3 ecu, can i install it without problems?
thanks for any advice.
James
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Pete D Offline
Administrator
#2
1. You cant' use an LA3 on an auto trans car. The auto trans EEC controls the 3-4 shift and converter lockup. The LA3 is manual trans computer.

2. Have you pulled the codes. This could shed light on the 3 -3.5K perfomance issue and is always a good idea. There is also a test for the TPS although it doesn't always catch a bad one: http://www.turbotbird.com/techinfo/idlet...tment.html

3. The small fan doesn't come on until around 220. I suspect you have other issues if I understand what you are saying. I understand you to say that the passenger side (primary) fan is coming on around 210 as it should and that is is not able to keep the car at desired temps. That should not be an issue at this time of the year, unless you are having 80*+ weather. Have you checked coolant level?
Any chance the radiator is plugged? If the small fan didn't come on at all, have you checked to see if it works. Run power direct from the battery just to test the fan motor. I would suspect a motor problem or wiring issue with the secondary, given that you say the primary is working like it should.

The ECT is the sensor that provides the EEC with coolant temp data as far as fan turn on.
A quick test for the fan motors, wiring and relays is to pull the connector off the ECT, jumper the two sides of the connector and start the engine. Both fans should run and that tells you the motors, wiring and both fan relays are OK. There may be corrosion between the connector and the sensor also. If the fans don't operate in normal use like they should then the problem is probably the ECT sensor or the flow of coolant past the sensor. The water passage at the hose on the bottom of the lower intake can become clogged

Send me an email and I'll send you some info on testing the ECT



[This message has been edited by Pete D (edited 03-08-2005).]
Pete Dunham


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stormy69 Offline
Junior Member
#3
I did pull the codes, different responses, but at one time or another got code 10 and 35, havent looked up the defs as it slipped my mind! I did put power directly to both fans and they function. where is the ECT, there looks to be a temp sender at the rear drivers side, is it only for the guage? it is a one wire hookup. From your info, looks like the ECT is on the bottom of the intake, i will take a peek for it today.
The main fan is not coming on dependably, when i first swapped relay packs it did, cant say for sure it has since. I am running with the a/c on to keep temps in check right now.
bummer on the la3, i am considering putting in a 5spd.
not that its the current priority, but is 10psi right for stock?
my emial [email protected]
thanks again
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Ryan H Offline
Posting Freak
#4
Can't say anything for the other problems you're having, but the auto trans cars got 10 PSI [Image: smile.gif]

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Ryan Harris

1988 TC 5 speed, all options including sunroof, Walbro 255 LPH HP, Star stage III, bypassed BCS and lots of love Big Grin
'88 TC Smile Walbro 255HP, Stinger FMIC, PIT BOV, Pro 5.0, Kirban, RR cam, FRPP strut tower brace, T3
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turbocoupes Offline
Senior Member
#5
I just bought another 88 TC with an auto trans...14 lbs. boost with everything in STOCK locations??? Did a heater core and made sure all hoses were in the right places and not cracking.

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Garry McVey "BIRDS OF A FEATHER" Birdoprey always in flight... TBird TC owners are usually wingin' it
TC's 83 project, 86 donor for 83, 86 FUN street car,87 RIP, 87 blue to be stock street car, 87 red donor for blue and others, 87 red daily driver, 88 street and strip HALF WICKED right now, 87 XR4ti project,80 pinto wgn project
Garry McVey "BIRDS OF A FEATHER" TBird TC owners are usually wingin' it
TC's 83 project, 86 donor for 83, 86 FUN street car daily driver with speed equipment from Red 88 donor, 87 blue to be stock street car, 87 red donor for blue and others, 87 red donor, 88 street and strip(now a donor) 14.01 chasin 13.0's, 87 XR4ti project,
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Asimov Offline
Senior Member
#6
Quote:Originally posted by turbocoupes:
I just bought another 88 TC with an auto trans...14 lbs. boost with everything in STOCK locations??? Did a heater core and made sure all hoses were in the right places and not cracking.


Is that with the stock gauge? If so, I'd look at it first. I believe mine was 4psi off, now that I think about it.



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-asi

1986 TC, 132k pretty well taken care of miles. k&n, [email protected], timing set at 12.5 (spout out), A/C delete. Very restrictive exhaust at the moment [email pics to asimov at forced-induction org for sales/id/showoff purposes (free hosting)]
-asi

1986 TC, 132k pretty well taken care of miles. k&n, [email protected], timing @ 12 (spout out), A/C delete. 3" Downpipe (no other exhaust... Whoever described that sound as a "pissed off tractor" hit the nail on the head)

[email pics to asimov at forced-induction org for sales/id/showoff purposes (free hosting)]
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turbocoupes Offline
Senior Member
#7
YEH car is PURE stock...

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Garry McVey "BIRDS OF A FEATHER" Birdoprey always in flight... TBird TC owners are usually wingin' it
TC's 83 project, 86 donor for 83, 86 FUN street car,87 RIP, 87 blue to be stock street car, 87 red donor for blue and others, 87 red daily driver, 88 street and strip HALF WICKED right now, 87 XR4ti project,80 pinto wgn project
Garry McVey "BIRDS OF A FEATHER" TBird TC owners are usually wingin' it
TC's 83 project, 86 donor for 83, 86 FUN street car daily driver with speed equipment from Red 88 donor, 87 blue to be stock street car, 87 red donor for blue and others, 87 red donor, 88 street and strip(now a donor) 14.01 chasin 13.0's, 87 XR4ti project,
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Pete D Offline
Administrator
#8
Stormy
1. there is no code 10. Codes start at 11 and that one is the "OK" code.

2. not sure about the code 35.

3. The ECT is located inbetween the middle two fuel injectors on the lower intake. The other sensor you were talking about is the temp sender for the gauge only. use the information I posted above to try to diagnosis the fan problems.
Pete Dunham


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stormy69 Offline
Junior Member
#9
the code 10 happened during a KOER test with a snap on MT2500 scanner. It said snap throttle(memory here) code 10, and then proceded to die. I think the base throttle setting is off along with a dirty IAC motor. i am working on it shortly and will updat all tomorrow.
thanks for the help,
james
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Jeff K Offline
Administrator
#10
Ahhhh.... the "code" 10 is called the dynamic response code, and is just there to tell you to do the brief WOT and exercize the BOO circuit. Itis not really a trouble code, it just tells you to do the WOT, BOO test.

If it dies, base idle is likely set too low. With IAC electrical plug off, and motor warm, use idle adjust screw on the linkage to set base idle to around 800 RPM.

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Jeff Korn

88 Turbo Coupe: Intake and exhaust mods, T3 turbo at 21 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 // 04 Taurus Duratec (wifes car)
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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