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hey guys my wifes 2002 V35 CVT-8 sedan has been doing this problem since the day i bought it for over a year now.

it only goes into limp mode BEFORE you start the car. Then the car doesn't go over 2000 - 2500 revs but reaches any speed you want (slowly) and VDC, SLIP etc. lights are on.

If you switch the car off and on sometimes it goes back to normal but its just pot-luck. Sometimes, switching off the car, banging the steering wheel (and avoiding triggering the airbag :P) and banging the dash around the aircon cluster then trying to start it seems to work but i reckon its all luck.

When it does go into limp mode it does it while you turn the key to accessories so all the lights come on but not start the car. If it enters this mode before you start it then it will stay in it when you continue turning the key to start and stay like that unless you turn the key off and on again in the hope that it dissapears.

Also a point i have to make is that when it does go into limp mode, there is a buzzing noise from the engine bay much like a relay struggling to open or close. If it does not do this noise before you start the car (while the key is on accessories) then the car will not go into limp mode.

OK, so here are error codes from Nissan:

9 CODES WERE RETRIEVED FROM ECU.

-BRAKE LAMP - LOW VOLTAGE

-BATTERY LOW VOLTAGE

-ECT THROTTLE MOTOR

-TRANSMISSION VOLTAGE X 3 FAULTS

-START VOLTAGE LOW

ALL CODES ARE DIRECTLY LINKED TO BATTER FAULT, POWER FAULT.

SOME CODES FOUND COULD HAVE BEEN EARLY CODES NOT CLEARED.

ok that was word-for-word from Nissan (but the bastards wouldn't give me the numbers of the codes)

as can be see, they are mostly "low voltage" errors so I did the first thing and that was to change to a new batter to make sure the old one wasn't causing the problem (you never know).

It still does it and its stumped me because its not like any other cars that i've read about online that go into limp mode while driving...it does it sometimes BEFORE you even start the car and also when it does do it theres a buzzing noise from the engine like i mentioned above which leads me to think that because of this "low-voltage" problem, there is a relay that is getting stuck and causing this car to go into limp mode.

any ideas?

Also apparantly theres a guy here in melbourne called Nuwan (excuse spelling) that knows these cars real well... anyone have his details?

thanks in advance, any info would be great so i can resolve this issue coz my wife driving around like that with no power can be dangerous in the event she needs to "step-on-it"

cheers,

Nas

Edited by TOOBO

Sorry to tell you, but these extensive issues with the CVT gearbox are seldom able to be completely fixed, and is the exact reason people stay away from GT8s like the plague. Everything you will fix, a new error will come up. Before I realised what a disaster GT8s are I looked at buying one. Luckily before I made full payment the gearbox developed errors, and after about 6 weeks and 3 different lots of sensors and relays ex-Japan, the seller gave up and parted the car out.

Good luck with it, but I am sorry to tell you no matter how much money you spend, you will probably never fix it.

Found this thread which may be helpful - I know he is in Bris, but that is a better option than parting out your car. At least if he has experience with them you may be lucky and he can help you.

http://www.skylinesaustralia.com/forums/topic/344504-v35-gt-8-cvt-transmission/

i don't think my issue is quite the same as yours because mine happens before the car starts. (i read your thread on that car you almost bought, lucky you got away from that one)

Parting out the car because of error codes is ridiculous. It will be fixed.

Thanks for your input nightcrawler

  On 09/06/2012 at 9:33 AM, sonicii said:

With that many voltage related issues with different components, I would be checking the factory grounding points for corrosion or damaged cables.

thats a good point, i will check that just in case. now to find the grounding points :P

  On 09/06/2012 at 10:46 AM, Marlin said:

Have you replaced the battery? So many issues can stem from something as simple as a dropped cell.

yeah man... that was the first thing i did just to make sure it wasn't just a dud battery

That sort of buzzing sounds like a faulty relay, perhaps you could check the relay box behind the battery for corrosion or damage? You will need to remove the battery again to get to it.

I know Nuwan is in Bayswater, someone here should know his details. I will try and get in touch with him for you.

I had similar problem with my v35 coupe.

Had it diagnosed with a reputable electrician

They found out the problem immediately and it was in this case the csm sensor.

Si take it to a known auto elect. and get them to diagnose it.

If u r in Sydney I can recommend ione to you.

Good luck.

Im not sure what a csm sensor is.... if you meant cam sensor then that would trigger a cam sensor fault code and it hasnt. cant diagnose cars on previous history unless its a commodore. get someone to clear the codes, then drive it untill limp mode. scan again and you should only see relevent codes.

  On 10/06/2012 at 10:38 PM, scotty nm35 said:

That sort of buzzing sounds like a faulty relay, perhaps you could check the relay box behind the battery for corrosion or damage? You will need to remove the battery again to get to it.

I know Nuwan is in Bayswater, someone here should know his details. I will try and get in touch with him for you.

Also check that your drainage hole is not full of leaves etc. These can get filled up which can cause water to drain via alternate routes... usually over wiring lol.

Out of curiosity, what sized battery do you have and how much extra electronics (ICE, Immobiliser, Alarm etc) do you have in the car?

  On 12/06/2012 at 12:46 AM, iamhe77 said:

Also check that your drainage hole is not full of leaves etc. These can get filled up which can cause water to drain via alternate routes... usually over wiring lol.

Out of curiosity, what sized battery do you have and how much extra electronics (ICE, Immobiliser, Alarm etc) do you have in the car?

Hey what drainage hole are you talking about? On the base of the battery?

I have a 500 - 550cca battery in it. Vantage remember exactly. It might even be a 450cca. Gotta check to make sure.

The only aftermarket stuff installed is one of those touch screen DVD/gps/mp3 head units running off the factory amp.

im with scotty on this one. sounds like a ground wire or relay.

buy a wire brush and start removing ground terminals. make sure the battery terminals are clean too. every body point should be removed and cleaned.

  On 09/06/2012 at 2:42 AM, TOOBO said:

Also apparantly theres a guy here in melbourne called Nuwan (excuse spelling) that knows these cars real well... anyone have his details?

See below for Nuwan's details.

He should be able to sort you out.

Cheers,

Keith

Import Revolution

3/23 Scoresby Road

Bayswater, Victoria 3153

Australia

P/F |+61 3 9729 0669

M | +61 422 807 393

E | nuwan@irev.com.au

Edited by thinktea
  On 15/06/2012 at 4:28 AM, zei20l said:

im with scotty on this one. sounds like a ground wire or relay.

buy a wire brush and start removing ground terminals. make sure the battery terminals are clean too. every body point should be removed and cleaned.

ok cool will do that definately....you say that "every" ground point...how many are there? the main one is from the battery isn't it?

  On 15/06/2012 at 4:41 AM, thinktea said:

See below for Nuwan's details.

He should be able to sort you out.

Cheers,

Keith

Import Revolution

3/23 Scoresby Road

Bayswater, Victoria 3153

Australia

P/F |+61 3 9729 0669

M | +61 422 807 393

E | nuwan@irev.com.au

hey thanks a lot man, i had his number and lost it...i'll just take it to him and get it fixed

theres one from the battery -ve terminal to the chassis, plus all the other ones that run to the engine and gearbox. there are point on the top of the motor, under the plastic cover. check them all. the transmission one i cant remember, the CVT boxes are different from the RE5s ive seen.

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