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pedrosixfour

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Discussion starter · #1 ·
Hey folks.

2008 UK spec D40 Aventura 6 speed manual.

For the majority of my ownership the Nav has sometimes hesitated when accelerating from low revs. Nothing too dramatic, just a bit of a splutter, a big cloud of smoke and away it goes.

Over the last week or so though the problem seems to have worsened with the jeep sometimes losing all power after the initial splutter and the only thing I can do to solve it is turn the ignition off & back on again which clears the problem for a while.

Now I've checked the stored codes while doing a reset and (if I'm reading it correctly) the only one stored is 0093.

I get ten slow flashes, a pause, ten quick flashes, a pause, nine quick flashes, a pause, three quick flashes, then the sequence repeats.

From what I can tell this is a major fuel system leak detected.

Would I be correct in assuming that if there is no obvious sign of a leak that the QCV or SCV may be the culprit as it is over pressurising the rail which the system reads as a leak when the fuel pressure regulator valve opens?

I had a hilarious experience in my local Nissan dealer earlier today, before I went investigating the possible cause of the problem myself. I went in to price the 3 gearbox switches and the rear seal & cover to eliminate that particular problem & I just happened to ask the store man for a price on a suction control valve.

Why or where I got the idea that the SCV might be the problem I can't honestly say, I assume I was browsing here not so long ago and happened across a thread where my symptoms were discussed and the name stuck with me.

Anyway as soon as I mention the valve a suit comes galloping out of the office to say that the SCV isn't available on its own and I would need to buy the complete rail for ÂŁ400 and then have the system resynchronised at an extra cost.

Had I known then what I've discovered over the last couple of hours I could've had a lot of fun with him but I was completely in the dark and his guff seem plausible, albeit totally useless.

As I said I wasn't even sure what an SCV was at the time so I politely listened to his speech, already with absolutely no intention of following his advice, and went back to talking to the store man about the availability of LSD oil. To which the suit asked was my Nav auto or manual?

Six speed manual I said, to which his reply is that no manual Navs have an LSD, they were only fitted to autos.

At that stage I told the store man to ring me in the morning & said goodbye.

Any advice on my particular problem would be greatly appreciated.

Also, I've seen members warn about buying parts for the Nav on ebay. Are there ANY reliable traders I might deal with for the likes of the SCV (if needed) but also the gearbox switches and seal(s), as my local main dealer is looking for the equivalent of £350 for them (€410)

Thanks,
-Damien-

edit:

Would these be safe bets?

For the switches
http://www.ebay.co.uk/itm/New-Genuine-N ... 3cd4f9f595

For the SCV/QCV
http://www.ebay.co.uk/itm/NISSAN-NAVARA ... 4174213515
 
Re: Engine Hesitation @ low revs and single fault code showi

try billcar for bits
also does the MAF need a clean
 
Re: Engine Hesitation @ low revs and single fault code showi

also have a read of diydave post regarding scv
 
Re: Engine Hesitation @ low revs and single fault code showi

Also have you managed to locate the scv on the fuel rail :lol:
 
Discussion starter · #6 ·
Re: Engine Hesitation @ low revs and single fault code showi

pdfisher said:
also have a read of diydave post regarding scv
Have looked at several threads over the last couple of hours, including Dave's
 
Re: Engine Hesitation @ low revs and single fault code showi

Mine is doing similar, I have a new SCV, just haven't fitted it yet. You can get them all over the place including ebay. As above they bolt onto the fuel pump, not the fuel rail!

Billcar do the 4x4 switches for ÂŁ40ish each.
 
Discussion starter · #9 ·
Re: Engine Hesitation @ low revs and single fault code showi

landmannnn said:
Mine is doing similar, I have a new SCV, just haven't fitted it yet. You can get them all over the place including ebay. As above they bolt onto the fuel pump, not the fuel rail!

Billcar do the 4x4 switches for ÂŁ40ish each.

The new SCV valve you have mate, did you buy it from Nissan and does it have the grey or blue "cap"?
 
Re: Engine Hesitation @ low revs and single fault code showi

pedrosixfour said:
landmannnn said:
Mine is doing similar, I have a new SCV, just haven't fitted it yet. You can get them all over the place including ebay. As above they bolt onto the fuel pump, not the fuel rail!

Billcar do the 4x4 switches for ÂŁ40ish each.

The new SCV valve you have mate, did you buy it from Nissan and does it have the grey or blue "cap"?
It has a grey cap. I considered that if it had done 130k miles on the last one then a like-for-like would be fine.
 
Discussion starter · #11 ·
Re: Engine Hesitation @ low revs and single fault code showi

landmannnn said:
It has a grey cap. I considered that if it had done 130k miles on the last one then a like-for-like would be fine.
Yep, that's logical Jim. :fingersx
 
Discussion starter · #12 ·
Re: Engine Hesitation @ low revs and single fault code showi

Put the jeep over the pit to take a look at the transfer box switches only to find the front transfer case output seal leaking badly.

:whoopdeedo

The driveshaft yoke that the seal runs on is badly scored so I'm going to test two new seals of different height to move the contact point either one way or the other.
 
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