Power Loss at Full Throttle

Adam Navara · Sep 6, 2016

Hi Guys,

Weird stuff happening as soon as my engine is up to temperature (after 15 mins or so of driving). 2006 D40 Kingcab with mods as listed in signature....

If I accelerate at full throttle it feels like the engine starts choking at about 3000RPM, like you have hit the rev limiter really early or the turbo is choking up? The exhaust note gets noticeably louder and the rpm stay flat with the engine spluttering.

If i accelerate just under full throttle it is fine?

Any idea?

Thanks
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leec33 · Sep 6, 2016

I get that also,power seems to disappear when I put my foot down. I take my foot off the accelerator for a second, the power then comes back.

lookskyward1 · Sep 6, 2016

You need to start with the basics: http://www.nissan-navara.net/27-tec...7-technical-assistance-d40/30629-how-investigate-fix-engine-running-issues.html

Good luck and keep us posted

chris vince · Sep 6, 2016

Is this in every gear?

leec33 · Sep 6, 2016

It's usually when I've booted it from a standing start, so maybe it's second gear for me as mines an auto.

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chris vince · Sep 6, 2016

Sorry, as it's an auto not what I was thinking.

leec33 · Sep 6, 2016

Ok sir ?

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Adam Navara · Sep 8, 2016

Its really prominent in 2nd gear, and apparent in 3rd 4th. It seems to be only at harsh acceleration. It feels like the turbo is choking? Because of custom exhaust i can hear exactly what the turbo is doing and it feels like it chokes and blocks power under really harsh acceleration?

lookskyward1 · Sep 8, 2016

Have you followed the guide I posted for you?

Adam Navara · Sep 8, 2016

Sorry mate, I did see it, will start working through that list!

Thanks

lookskyward1 · Sep 8, 2016

With a bit of luck that will sort it. If not, we'll have a couple of other things to look at but first things first.

Adam Navara · Sep 8, 2016

Ok mate, will get a fuel filter ordered? any links for best price?

leec33 · Sep 8, 2016

I bought a blueprint one off ebay for 29 pound, genuine ones going for 39

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lookskyward1 · Sep 8, 2016

It depends on the type, the early Euro 3 uses a cheaper filter, the Euro4 and after use a canister filter that is a lot more expensive.

These are not genuine Nissan ones but it is a top quality make so should be fine: http://www.ebay.co.uk/itm/fits-Niss...468399?fits=Car+Make:Nissan|Model:Navara&hash=item360682c8ef:g:BJwAAOSwbsBXohpZ

17743 · Sep 8, 2016

NPS
Suction Control Valve
Boost solenoid

Mine did the same thing only from harsh takeoff gentle acceleration was fine swung the SCV 180 Deg and its ok now, not an auto

lookskyward1 · Sep 8, 2016

i agree these may be the cause but the basics need to be covered first.

Adam Navara · Sep 8, 2016

Mines a euro 3 so will that ebay part do the job? stupid question but where are they housed on the navara? i havnt had a look yet?

Thanks guys

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17743 · Sep 8, 2016

just turn it 180deg its on the drivers side

http://www.nissan-navara.net/45-d40....net/45-d40-technical-library/16999-changed-suction-control-valve-d40-pics.html

If it works then get one and yes Ebay do them but it needs to match the pump serial/part number

Adam Navara · Sep 9, 2016

Will look at the basics and move onto that soon. can someone inform me as to where the fuel filter is mounted?

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lookskyward1 · Sep 12, 2016

This should help: http://www.nissan-navara.net/45-d40-technical-library/57833-screw-fuel-filter-euro3-type.html

lookskyward1 · Sep 9, 2016

The fuel filter is mounted on the engine bulkhead right beside the brake master cylinder. On the Euro3 it has a primer button on top of the fuel filter mount.

Tvarditsa Kris · Sep 9, 2016

power loss

i had this problem, but my mate in his garage solved, free of charge check around your diesel pump and the sensors on it, might not be your problem but worth a look.

Adam Navara · Sep 10, 2016

Sounds like the SCV again?

Adam Navara · Oct 6, 2016

Fuel filter finally replaced .... turns out it hadnt been replaced since 2006 ... jesus ...

All problems have gone!

lookskyward1 · Oct 7, 2016

Good news, it proves the point of doing the simple stuff first.:awesomework

It will still be worth you doing all of the other stuff in the guide I posted to you as a good piece of preventative maintenance.

Adam Navara · Nov 29, 2016

Sorry to bump an old thread, but its a continuation.

I have done all things needed to maintain it and since having the fuel filter swapped that hesitation/misfire problem is gone! The truck in general now just feels down on power, maybe ive just been driving it a while now and got used to it! but maybe there is something else?

Anyone recommend a company that will do a good remap in surrey?

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landmannnn · Nov 29, 2016

I would make sure that all is in order first, you don't want to be remapping if you have worn injectors, tired maf, dying scv etc.

lookskyward1 · Nov 29, 2016

These guys have some good reviews on here. I believe they will even come out to you: https://www.celtictuning.co.uk/

Failing that, give these guys a shout, if they can't do it, they'll know someone who can: www.kaizermotor.co.uk

Power Loss at Full Throttle

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