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Why dont I have a CEL? - 97 using 95 ecu

Old Jul 30, 2003 | 11:47 AM
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Why dont I have a CEL? - 97 using 95 ecu

I just got my 5sp conversion done on my 97 gxe "auto" and I swapped in a ECU off a 95 se 5speed. Question - why dont I have a CEL? only thing I get is my O/D light flashing at start up and thats it. everything seems to be running fine so Im not complaining but just wondering why no CEL? I drove the car all night too so I gave it time to light up but it didnt.
Old Jul 30, 2003 | 12:21 PM
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Your car has more sensors than the 95 ECU needs. It's getting every piece of info it looks for.

If you put a 97 ECU into a 95, the wiring and sensors from the car would not have all the sensors that the 97 ECU looks for.

I think....
Old Jul 30, 2003 | 12:24 PM
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or maybe ur car was built in 96 and uses a 95/96 ecu
Old Jul 30, 2003 | 12:28 PM
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Re: Why dont I have a CEL? - 97 using 95 ecu

If you want to get rid of the Flashing O/D at start up. You need to disconnect the Transmission ECU Harness. The Tranny ECU is located behind the ash-tray console.


Originally posted by Nismo
I just got my 5sp conversion done on my 97 gxe "auto" and I swapped in a ECU off a 95 se 5speed. Question - why dont I have a CEL? only thing I get is my O/D light flashing at start up and thats it. everything seems to be running fine so Im not complaining but just wondering why no CEL? I drove the car all night too so I gave it time to light up but it didnt.
Old Jul 30, 2003 | 12:28 PM
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lets hope thats the case, im not complaining. no cel!!!
Old Jul 30, 2003 | 12:29 PM
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Re: Re: Why dont I have a CEL? - 97 using 95 ecu

Originally posted by Morfeus17
If you want to get rid of the Flashing O/D at start up. You need to disconnect the Transmission ECU Harness. The Tranny ECU is located behind the ash-tray console.


thanks, Ill do that
Old Jul 30, 2003 | 02:31 PM
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Or you can just disconnect the O/D bulb behind the gauge cluster....
Old Jul 30, 2003 | 05:39 PM
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Or you can buy an RPM Switch and turn that O/D light into a shiftlight.

Old Jul 30, 2003 | 06:06 PM
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does this mean that 97+ maxima's will be able to use a JWT ECU?
Old Jul 30, 2003 | 06:12 PM
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Originally posted by Dev
does this mean that 97+ maxima's will be able to use a JWT ECU?
They already are able to - but you get a CEL.

Old Jul 31, 2003 | 01:55 AM
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Because it's the special ECU!!!!!!
Old Jul 31, 2003 | 02:11 AM
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Originally posted by iansw


They already are able to - but you get a CEL.

but I wont for some reason
Old Jul 31, 2003 | 06:08 AM
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Nismo,

the conversion that I'm planning is yours backwards...I'm putting a 97 5 speed tranny and ecu into a 95 gze, but Hals direction deals with the issue so I think I'll follow them to the letter.
Old Jul 31, 2003 | 06:30 AM
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arn't hte o2 sensors on the 95/96 in differ parts of the exhasut tehn the 97+? so u should get an o2 code, correct? or where the 97's bul;t in 96 EXACTLY like the 96
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