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Old 07-08-2008, 03:15 AM   #1
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Vx Ecu

I just bought my 2nd vx. It is a 1992. I was trying to figure out if it was a ca or fed model. It has a 5 wire o2 but when i looked at the ecu it was a p07-l00 which i understood was the ca ecu.

I went and looked at my 95 vx and it has a P07-A01 ecu (and 5 wire o2)

So question I thought that the fed vx's had the 5 wire o2 and the ca had the 4 wire and thus what's going on with my 92 (5 wire & ca ecu)?

Any help would be appreciated.
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Old 07-08-2008, 07:27 AM   #2
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Originally Posted by acousin01 View Post
what's going on with my 92 (5 wire & ca ecu)?
In '93 to '95, the CA VX had a 4-wire O2 sensor. But in '92, the CA VX had a 5-wire sensor, just like Federal. But all CA VX ('92-'95) came with the CA ECU, which does not fully utilize the 5-wire sensor and hence does not support lean burn.

Does your dash cluster have an SIL (shift indicator light)? This would be a clue that you're Federal. But of course the cluster could have been swapped.

You can also check the sticker under the hood. On a CA car, it will say something like this: "this vehicle conforms with US EPA and state of California regulations." But this is also not definitive, since hoods can be swapped.

The other two signs of a CA car are the ECU and the O2 sensor. Also the engine wiring harness, which will correspond to the O2 sensor.
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Old 07-13-2008, 12:00 PM   #3
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You have a California car if your ECU ends in l00. I have the same car. You can enable lean burn by simply swapping in a Federal ecu. This only works on 1992 cars. If you had a 93-95 Cal. car, you would have to convert the 4-wire to a 5-wire.
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