Losing boost..

[threedogs]

Good find MH a factory tigged IC is about 33% bigger than stock, so a small gain to be had.
Have a look at an XR6 IC I think they would be very close to working .

[Val]

Also what about the fuel filter. Last changed? When you get limp mode if you let off the go pedal and back on again it goes away.

Hi Mudski, what you said above is what's happening to my year 2000 model Patrol. Do you know what is the fix on this problem?

Cheers

[mudski]

Hi Mudski, what you said above is what's happening to my year 2000 model Patrol. Do you know what is the fix on this problem?

Cheers

thats limp mode mate. Its usually caused by engine overboosting. The zd's ecu has an overboost safety precaution which is usually around the 16psi. Some times giving the maf a clean helps. Or replacing the maf, or fitting a dawes and needle valve. The dawes is designed so you can limit the maximum boost pressure so its below the limp mode over boost threshold.

Sent from my SM-P600 using Tapatalk

[Val]

Thanks mate. I will clean and check MAF sensor then if it is working fine.
Would you be able to send me a copy of Nissan Patrol Reference Document to my email address as I don't have enough post yet to download it? bon2x_77@yahoo.com

Cheers
Val

[Val]

Thank you for the info Mudsky.
Hi to all,
I want to share what we (me and my electronic engineer) did to fix this limp mode problem that we call without spending a single dollar. Since after checking all the sensors that I know (MAF, Engine TEMP and boost sensor) and proven that they are all working fine, I've tweak few times the variable turbocharger control actuator and that dropping of my boost disappeared. I’ve felt more power on the acceleration now even my boost goes up to 14 psi only.

[mudski]

Thank you for the info Mudsky.
Hi to all,
I want to share what we (me and my electronic engineer) did to fix this limp mode problem that we call without spending a single dollar. Since after checking all the sensors that I know (MAF, Engine TEMP and boost sensor) and proven that they are all working fine, I've tweak few times the variable turbocharger control actuator and that dropping of my boost disappeared. I’ve felt more power on the acceleration now even my boost goes up to 14 psi only.

Yeah thats also done here but for many its a pretty tricky job. Hence using a needle valve. Does the same as what you did but you can adjust it with minutes without touching the actuator. Get more boost into it mate and it will go even better.

Cheers.
Mark.

[Val]

Hi Mudsky,

Thank for the advice mate. I like doing mechanical job (but I'm not experienced yet) so I think if I can get hold off on how to do this dawes and needle valve I will try it one day. How much do you think this dawes and needle valve kit that I need?

Anyone from Bundaberg Queensland in this forum?

Cheers
Val

[mudski]

They're $154 (with EGR plate) plus $12, but member get 10% of the item price... $154 including post without the plate.

[Val]

Thanks mate. I'll get my boss (wife) to put a budget on this.

Cheers

[NissanGQ4.2]

Thanks mate. I will clean and check MAF sensor then if it is working fine.
Would you be able to send me a copy of Nissan Patrol Reference Document to my email address as I don't have enough post yet to download it? bon2x_77@yahoo.com

Cheers
Val

Bump for Val as post went into moderation due 2 email address.

Val, type in "nissan patrol reference document" into google, first listing should be the Nissan patrol reference document hosted on another site that is a downloadable pdf file