Drivetrain AT/MT Drivetrain discussions on the 240sx and Silvia

Help! I have some serious tranny questions.

Old 05-08-2007, 09:28 PM
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Exclamation Help! I have some serious tranny questions.

I have a tranny out of a 91 and I am going to put it in my 95 OBDI. What kind of ECU do I need?? I have a 91 manual ecu and the pins are totally different. Do I need a 95 manual ECU?
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Old 05-09-2007, 11:59 AM
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you can use an auto ecu just goto trick the ecu in thinking its in neutral
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Old 05-09-2007, 05:27 PM
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How would I be able to do that?
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Old 05-10-2007, 06:06 AM
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you dont trick the ECU... you just take the NSS plug in the engine bay and connect the two wires together....

BUT...

you need a 95 tranny. the 91 tranny lacks the crank alignment sensor that the 95 tranny has. IF it runs, it will throw a CEL. sometimes theyll start without it, sometime they wont.
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Old 05-10-2007, 10:51 PM
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I thought the crank angle sensor was only on the OBDII??
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Old 05-11-2007, 02:32 PM
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do you have an very very Early 95 240?????
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Old 05-11-2007, 04:31 PM
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Yes it is the early 95
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Old 05-11-2007, 05:01 PM
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yea your car is obdI

and you verify that by the amount of O2 sensors you have. you should only have 1 if its obdII. and in that case you should not have the crank sensor... you have to take into consideration the whole CA emissions 240 versions which were among the first to get obdII for its emissions upgrades.i have not worked with s14s much so i cant verify that....

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Old 05-11-2007, 09:23 PM
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OBDII has TWO O2 sensors, ODBI has only one.
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Old 05-12-2007, 05:18 AM
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OBD1 or 2 doesnt matter.

S14's have 2 O2 sensors.
S14's have crank alignment sensors on the tranny

BUT

early S14's dont care if that 2nd O2 is there or not
early S14's dont care if that CAS is there or not

hope you like driving with a CEL lit up
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Old 05-12-2007, 05:22 AM
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take the bulb out, Roffleiron
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Old 05-12-2007, 10:08 AM
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Originally Posted by Durdan View Post
OBD1 or 2 doesnt matter.

S14's have 2 O2 sensors.
S14's have crank alignment sensors on the tranny

BUT

early S14's dont care if that 2nd O2 is there or not
early S14's dont care if that CAS is there or not

hope you like driving with a CEL lit up
cool now i know
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Old 05-25-2007, 06:32 PM
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You can drill a hole and mount the CAS in a tranny not equipped with the CAS, just have to know where to drill.
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Old 05-27-2007, 06:53 PM
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Originally Posted by nightkid86 View Post
You can drill a hole and mount the CAS in a tranny not equipped with the CAS, just have to know where to drill.
True but you can not just slap it in..the s14 bellhousing where the cas goes has a slight raise. S13 does not..so if you just slap the sensor in it will get eaten by flywheel.Find some sort of washer to raise it up slightly and clear plug end of sensor as well. I've done it once and also I've swapped the front bellhousings s14 onto s13 to have a cleaner install.
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Old 06-08-2007, 01:30 PM
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I put a couple of washers in there, how close does the sensor need to be to the flywheel?
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