North American Turbocoupe Organization



EEC question
Nsw Offline
Senior Member
#1
i didesided that i wanted to swap out the computer from my 88 into my 87( trying to figure out why i the cars poorly) the old EEC that was in my 87 was an LA2? i thought that the 87-88 both used the LA3. also i nothiced that my orange abs light would periodicly come on same with the check engine. that happed in my 88 where the new computer came from. do they store codes even if there unplugged and swapped into another car?
1988 5speed black every option. 3inch single turbo to tail(stinger), manual boost control. k&n cone walbro fuel pump

1986 xr4ti project car..... way to many mods to list.
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JT Offline
Posting Freak
#2
The LA2 was used before (as you can tell by the number) the more famous LA3 in 1988. Aside from slight difference in programming, they are swappable with no extra work. You can swap them if you wish.

The EECs store any trouble codes in a battery powered memory. When the power is removed, such as in removing the EEC from the vehicle harness, that memory gets cleared.

By the way, what is wrong with the car for you to be swapping them to "test"? The EECs rarely go bad on their own.

[This message has been edited by JT (edited 10-26-2004).]
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Jeff K Offline
Administrator
#3
Are you saying that the ABS light and CEL would come on / go off together (i.e., come on / go off at the same time)? Or do they just randomly come on / go off with no relation to each other?

Does the ABS light come on when car isnt moving, or only when moving?

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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 // 02 Taurus Vulcan(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.
11 Crown Vic Interceptor
14 Toyota Camry (wifes car)
95 Taurus GL Vulcan winter beater
67 Honda 450 Super Sport - completely customized
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Nsw Offline
Senior Member
#4
i already did swap them, thje La2 i pulled out was damn so was the black plastic insulation pice right behind the kick pannel. the car does run better with this one. The lights come on ramdomly with no pattern. But this diddent not happen untill i switched computers. the check abs light stayed on for a long time after i started the car. much longer then it normaly would.
1988 5speed black every option. 3inch single turbo to tail(stinger), manual boost control. k&n cone walbro fuel pump

1986 xr4ti project car..... way to many mods to list.
Reply

JT Offline
Posting Freak
#5
i don't understand what was wrong with the LA2 that you pulled out, you're missing a keyword in describing the LA2 and plastic insulation. Hot?

If the EEC really did fail, it usually is caused by an electrical issue in the car. They rarely fail, and they rarely just go bad on their own.

If the check engine light is coming on while the engine is running, then run the EEC tests to see what the EEC is reporting. If the check engine light is coming on, then turing off (all while the engine is running) then a code/codes will be stored, regardless if the light is currently on or not. Telling us what it is reporting, will allow us to further help.

However, if the condition hasn't reappeared for X amount of cycles, and you wait too long to pull the codes, the EEC will clear whatever code it was holding. It will also be cleared if battery power is removed from the EEC.
http://www.turbotbird.com/techinfo/Retri..._codes.htm
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Nsw Offline
Senior Member
#6
it s was damp, not damn.....mabey i should proof read before i post Tongue
1988 5speed black every option. 3inch single turbo to tail(stinger), manual boost control. k&n cone walbro fuel pump

1986 xr4ti project car..... way to many mods to list.
Reply

Jeff K Offline
Administrator
#7
Water and computers dont mix. Find the water leak and fix it. Likely leak site is the bottom of the windshield, or where the radio antenna comes in.

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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 // 02 Taurus Vulcan(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.
11 Crown Vic Interceptor
14 Toyota Camry (wifes car)
95 Taurus GL Vulcan winter beater
67 Honda 450 Super Sport - completely customized
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Keith Nubel Offline
Posting Freak
#8
Do you have a sunroof? The drain tubes have been known be a problem.

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85.5 TC 5 speed, Ranger Roller cam, 3" exhaust system, manual boost valve, large VAM, SVO PE computer, front mount Motorsport intercooler & sport grille, ported upper and lower intakes,flow matched injectors, ported E6 manifold, 245/45/17 wheels & Tires,140 mph speedo,Motorsport lowering springs, under restoration
1985 TC
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PetzJC Offline
Senior Member
#9
OK...maybe I am missing something here, but I am sure Jeff K or JT will agree or set me straight.

The ABS codes are not stored in the EEC. The ABS codes are stored in its own computer mounted in the trunk on the fold down avionics tray. Swapping EEC's between cars does not have anything to do with the ABS light illuminating.

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88 Silver T/C, original owner, 256,000 miles.
Loaded with everything except leather & auto trans.
K&N, Gillis, SVO roller #1, big SS valves, ported intake, head, & exhaust.
Bottom end & turbo original/untouched.
Polyurethane bushings throughout, Goodyear GT-HR 235/55R16's.
Former owner of 88 Silver T/C, loaded (except leather & A/T), original owner, 294,815 miles!!!
K&N, Gillis(18 psi), SVO roller #1, big SS valves, ported intake, head, & exhaust.
Short block & turbo original/untouched, spec-II/III clutch combo.
Polyurethane bushings throughout, Goodyear GT-HR 235/55R16
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Jeff K Offline
Administrator
#10
Quote:Originally posted by PetzJC:
OK...maybe I am missing something here, but I am sure Jeff K or JT will agree or set me straight.

The ABS codes are not stored in the EEC. The ABS codes are stored in its own computer mounted in the trunk on the fold down avionics tray. Swapping EEC's between cars does not have anything to do with the ABS light illuminating.


Correct! ABS and EEC share nothing in commom. ABS codes are stored in the ABS computer in the trunk.

------------------
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 // 02 Taurus Vulcan(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.
11 Crown Vic Interceptor
14 Toyota Camry (wifes car)
95 Taurus GL Vulcan winter beater
67 Honda 450 Super Sport - completely customized
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