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Discussion Starter #1
I need a way to identify the engine in the car. This is a transplanted VG30ET. I was told that it was a "86" Looking at the ECU, it has a small tag that says "87". I may need to buy a ECU, so the year plays a important part in purchasing.
The number on the block says"VG30266115A
the ECu has
A18-635-654k 1613
The dealer has no clue about the ECU code.
Thanks
Al
 

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<http://z31.com/oboard/archives/view.pl?53>


Federal Turbo
5spd
NMC/JECS
1984 23710-02P02/A18-617370
1984 23710-02P03/A18-635374
1985 23710-02P60/A18-635650
1985 23710-02P61/A18-636654
1986 23710-19P02/A18-654M30
1986 23710-19P03/A18-654M34
1987 23710-21P01/A18-680M90
88/89 23710-26P00/A18-A04M94
88/89 23710-26P01/A18-A04M46

AUTO TRANS
NMC/JECS
1984 23710-02P12/A18-618371
1984 23710-02P13/A18-636375
1985 23710-02P70/A18-636651
1985 23710-02P71/A18-636655
1986 23710-19P12/A18-655M31
1986 23710-19P13/A18-655M35
1987 23710-21P11/A18-681M91
88/89 23710-26P10/A18-A05M95
88/89 23710-26P11/A18-A05M47

CALIF TURBO
5spd
NMC/JECS
1984 23710-02P06/A18-619372
1984 23710-02P07/A18-637376
1985 23710-02P65/A18-637652
1985 23710-02P66/A18-637656
1986 23710-19P07/A18-656M32
1986 23710-19P08/A18-656M36
1987 23710-21P06/A18-682M92
88/89 23710-26P05/A18-A06M96
88/89 23710-26P06/A18-A06M48

AUTO TRANS
NMC/JECS
1984 23710-02P16/A18-620373
1984 23710-02P17/A18-638377
1985 23710-02P75/A18-638653
1985 23710-02P76/A18-638657
1986 23710-19P17/A18-657M33
1986 23710-19P18/A18-657M37
1987 23710-21P16/A18-683M93
88/89 23710-26P15/A18-A07M97
88/89 23710-26P16/A18-A07M49

FEDERAL NONTURBO
5spd
NMC/JECS
1984 23710-01P00/A18-613500
1984 23710-01P10/A18-631504
1985 23710-01P60/A18-631660
1985 23710-01P61/A18-631664
1986 23710-18P02/A18-650M20
1986 23710-18P03/A18-650M24
1987 23710-21P61/A18-676M80
88/89 23710-25P00/A18-A00M84
88/89 23710-25P01/A18-A00M42

AUTO TRANS
NMC/JECS
1984 23710-01P10/A18-614501
1984 23710-01P11/A18-632505
1985 23710-01P70/A18-632661
1985 23710-01P71/A18-632665
1986 23710-18P12/A18-651M21
1986 23710-18P13/A18-651M25
1987 23710-21P71/A18-677M81
88/89 23710-25P10/A18-A01M85
88/89 23710-25P11/A18-A01M43

CALIF NONTURBO
5spd
NMC/JECS
1984 23710-01P05/A18-615502
1984 23710-01P06/A18-633506
1985 23710-01P65/A18-633662
1985 23710-01P66/A18-633666
1986 23710-18P07/A18-652M22
1986 23710-18P08/A18-652M26
1987 23710-21P66/A18-678M82
88/89 23710-25P05/A18-A02M86
88/89 23710-25P06/A18-A02M44

AUTO TRANS
NMC/JECS
1984 23710-01P15/A18-616503
1984 23710-01P16/A18-634667
1985 23710-01P75/A18-634683
1985 23710-01P76/A18-634667
1986 23710-18P17/A18-653M23
1986 23710-18P18/A18-653M27
1987 23710-21P76/A18-679M83
88/89 23710-25P15/A18-A03M87
88/89 23710-25P16/A18-A03M45
 

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Discussion Starter #3
Great, now I have a 85 ECU with a 86 turbo engine. Anyone know the difference between the two?
Thanks
Al
 

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You'll probably have to change the 02 sensor, because I know the 86's don't match up with anything.

I can't remember if the injectors changed impedences, but when you use the 88JWT-ECU with earlier cars, you need to add dropping resistors.
 

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Discussion Starter #5
I've just ordered a 86 O2 sensor. If I have to order a new ECU, all the trouble shooting is pointing to the ECU. But it could just be the wrong ECU fot the unknown Engine that I have.
Thanks
 
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