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M35 Still Stalling - Not Idling Properly

pixel8r

By pixel8r,
in Four Door Family & Wagoneers

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pixel8r
pixel8r

Hi, My M35 has been having idle problems for about the last 3-4 months. I've narrowed it down to a fairly specific case - and I can verify this almost every time now. It generally idles at 500rpm -

pixel8r
pixel8r

I think I found the problem. Here's some pics of the Throttle Body: Front Back You can see even on the Front side the ring of black thats built up. On the Back its quite evident there is a LO

pixel8r
pixel8r

Here's all of the diagnostic procedures I'm aware of for the ECU (there's more for the A/T too) - its all in the V35/G35 manual which I'm sure you have a copy of - its available on the net otherwise i

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andy65b Veteran

andy65b

Posted
Posted

OK ,, UPDATE

I bought a cheap ODB cable off ebay as a speculator that it may work on the M35 as I do not know of any other ones that work. FAIL :D

I have now learnt that many Nissans that are JDM only have a very odd (read unique) ODB protocol. The Protocol it uses does not work logically which is why the software seems to have a problem. There are some Very Expensive options that can be purchased that will work on our car but we are talking around $500 and that is too rich for me.

There may be another option on the horizon that may help. I am waiting to see a prototype but it will be a few months before it is ready but the cost is reasonable.

I will keep you posted.

Cheers

Andy

oz_panda Contributor

oz_panda

Posted
Posted

UPDATE on mine.....

I went to my mates workshop..

he just updated his OBDII scan tools with newer car...

and i got him to reset the ecu ...

now my car idle like a dream at 650 spot on as it was ideling at 750-950 before...

i expect i should save a bit more fuel now!!

Real Happy today!!!

p.s. Andy. do u want his details maybe worth go and see him? he is located near Arncliff...

andy65b Veteran

andy65b

Posted
Posted
p.s. Andy. do u want his details maybe worth go and see him? he is located near Arncliff...

If you can let me where he is and a contact number that would be great.

Cheers

Andy

QWK32 Veteran

QWK32

Posted
Posted (edited)

i found some OBDII software on the net, haven't tryed it because i dont have an OBDII car to try it on. i think its called Scantech or something like that, might be worth a try.

Edited by QWK32
QWK32 Veteran

QWK32

Posted
Posted (edited)
thanks cam. ill try to dig my cable out and have a test tonight.

now, gotta find a USB to serial converter that works :)

i've been using a belkin serial convertor with a couple of the different consult software for a while now with out a problem. this is also on a couple different laptops, one's even a mac.

is the M35 OBD port the same as older nissans?

Edited by QWK32
iamhe77 Grand Master

iamhe77

Posted
Posted
its a generic one that i bought from someone from silvia nsw. he was making them himself and worked with my S15s. i wonder if it will work with the M35?

Wouldn't that be OBD-I though?

M35's are OBD-II

Bis-e Bee Mentor

Bis-e Bee

Posted
Posted
i've been using a belkin serial convertor with a couple of the different consult software for a while now with out a problem. this is also on a couple different laptops, one's even a mac.

is the M35 OBD port the same as older nissans?

Josh,

If you don't mind could you give me the name or a link for the Mac software you used for consulting?

I'm on a MacBook Pro and had given up any chance of using for consult because everything was PC based.

The M35 is OBDII, is that going to cause issues?

zei20l Grand Master

zei20l

Posted
Posted
Wouldn't that be OBD-I though?

M35's are OBD-II

anyone know if the connection is the same between the two. i have this funny feeling its only the protocol that is different (I or II) but the plug/interface is the same.......

andy65b Veteran

andy65b

Posted
Posted
anyone know if the connection is the same between the two. i have this funny feeling its only the protocol that is different (I or II) but the plug/interface is the same.......

OBD 2 is different to OBD, but that is only the start of it. There are then about 5 protocols (that I have worked out so far) that are used by different companies. Nissan are using KWP2000. I am told that this would not normally be a problem but Nissan have used some different logic in the process. Not quite sure how this works out in the real world but it has meant so far that some of the ones that by all logic should work have not.

These include:

http://blazt.biz/index.php (works on the V35)

http://cgi.ebay.com/ebaymotors/ws/eBayISAP...RK%3AMEWAX%3AIT (did not work)

I have read al lot about the pins and what they all mean. This site may help make sens of it all.

http://www.scantool.net/support/index.php?...p;kbarticleid=3 (where are type A)

Our pins are: 1, 2, 3, 4, 5, 6, 8, 9, 12, 13, 16.

Hope this helps you guys work out more information.

If any one knows of any reasonable priced system that will work with the M35, please let me know.

Cheers

Andy

QWK32 Veteran

QWK32

Posted
Posted
Josh,

If you don't mind could you give me the name or a link for the Mac software you used for consulting?

I'm on a MacBook Pro and had given up any chance of using for consult because everything was PC based.

The M35 is OBDII, is that going to cause issues?

its only a trial and then you have to register it, its the only Mac ported software i've found ConSultan

i also have a macbook pro, and i've only just started using ConSultan (im still on the trial period), but i also run a Parallels XP Virtual Machine and use all the windows based consult software like ECUTalk without a problem.

Bis-e Bee Mentor

Bis-e Bee

Posted
Posted
its only a trial and then you have to register it, its the only Mac ported software i've found ConSultan

i also have a macbook pro, and i've only just started using ConSultan (im still on the trial period), but i also run a Parallels XP Virtual Machine and use all the windows based consult software like ECUTalk without a problem.

Bugger

"ConSultan is a Mac OS X program designed to communicate with the Consult port of your pre-1999 Nissan vehicle"

Mine is a 2001 model, oh well :thumbsup:

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