Hey all, quick question. I was wondering what the differences are in an OBD1 VQ30DE and an OBD2 VQ30DE? (If any?)

The reason is, I am planning to drop a newer motor in my 95 maxima and I was wondering if any of the wiring, sensors, or anything is different and might possibly pose a problem during the swap?

So would there be any problem putting in a 97 motor into my 95 car without changing wiring harnesses?

Thanks!

 

i thought all 95+ maximas were OBDII

 

im not sure either but i need a definate answer soon.

 

i thought all 95 were OBDI and 96+ are OBDII. That might be the reason why autozone claim that they can't pull codes for 95 maxima.

 

ive heard that the eeeeaaarrrllllyyy 95's had obdI's but that may just be a rumor cuz i havnt seen anyone post about their 95 being obd I, maybe someone with more knowledge can shed some light on this issue

 

All VQ30 equipped maximas are OBDII.

 

95 maximas have an ODBII connector on the passenger side behind the ECU cover.

As far as putting the motor in there shouldn't be a ton of problems. Just use everything from the 95 that looks different. There will be some emissions stuff but it will not just connect with everything from the 97 emissions setup.

 

all vq30s are obdII AZ dont know shi..it and yes 96s are pass. side behind ecu cover as forementioned

 

I am pretty sure my 95 was obdI....

 

Exactly what makes you think that?? All VQ30 maximas are OBDII.

 

95s were not required to be ODBII compliant.

95 maximas are ODBII compatible. They are NOT ODBI. NO.

 

you really only need to worry about emissions. 95 has both cali and fed spec cars. the fed specs have the charcoal canister in the engine bay (where the ABS unit would be). Easy to spot since they dont have the purge control valve on the top of the intake manifold.

Just reuse the stock emissions if in doubt.

 

why not get the 3.5L long as ur putting in a new motor... ?