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Generation 4-1 Pajero NS Model 2006 - 2009

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  #11  
Old 22-04-19
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Originally Posted by nj swb View Post
Long shot, but could it be your MAF playing up? If the ECU thinks the engine has a different amount of air to what is actually flowing, it could be a mis-fuelling problem? Unplug, remove, spray with proper MAF cleaner, reinstall.

Similarly if your MAP sensor is partially blocked - do you know the condition of your intake manifold? Check the condition of the port on the manifold, inspect the hose to the sensor.

The screen in your tank could be responsible for the hesitation, but I'm not sure how it could cause high revving?

Of course, they could also be completely separate issues.

It's happened a few more times over the weekend but no where as bad as before.
I'll give the MAF a clean as you have suggested.

Dumb question where is the MAP sensor located and what does it look like?

Intake manifold was changed to the NT version at around 55k Paj has just clicked over 90k.

I'll do the sensors first and see how that goes and probably some injector cleaner as well, also get the vacuum hoses checked at the same time.

Is it possible its a faulty or fouled SCV?

Cheers for the suggestions.
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  #12  
Old 25-04-19
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had the same problem months ago , did the scv cleaning works better until sometimes , engine turn off when gearbox passes from 2nd to 3rd gear ........
and I found this...........



the previous owner told me that the fuel filter was not old ........

after filter change and scv relearn , it's night and day , the cars works great and better , I took time to find the dysfunction, due to several small problems successively finally
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  #13  
Old 25-04-19
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Quote:
Originally Posted by Silverfox View Post

Intake manifold was changed to the NT version at around 55k Paj has just clicked over 90k.

.
What is different between the NS/NT intake manifold please ?
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  #14  
Old 25-04-19
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The outlet for the MAP sensor hose is on the upper side on the NT manifold so it keeps it cleaner.
If you google ns manifold photos you will find photos marking the difference, they are from a forum thread from a couple of years ago.
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  #15  
Old 26-04-19
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Have you got a scan gauge?

i would be cleaning your throttle connector at the throttle body to start with

to me it sounds like and issue with your foot throttle sensor or throttle body

may even be vacuum related where the solenoid playing up

i dont really play around with them anymore, if your local id be happy to have a look and plug the mut up and check some things
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  #16  
Old 26-04-19
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Quote:
Originally Posted by Stoneman View Post
Have you got a scan gauge?

i would be cleaning your throttle connector at the throttle body to start with

to me it sounds like and issue with your foot throttle sensor or throttle body

may even be vacuum related where the solenoid playing up

i dont really play around with them anymore, if your local id be happy to have a look and plug the mut up and check some things



Thanks for the reply Stoneman, appreciate the response.


One thing I noticed today as well was there is some run on in the motor when switching it off. This happened a couple of times tonight.


I'll start with getting the throttle connector cleaned as you mention.

Can the foot throttle sensor be cleaned? is there a way to check if the throttle sensor playing up?


Unfortunately I'm in Adelaide otherwise I'd take you up on the offer.....and over a beer.



Cheers

Last edited by Silverfox; 26-04-19 at 07:39 PM.
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  #17  
Old 27-04-19
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Quote:
Originally Posted by Silverfox View Post
Thanks for the reply Stoneman, appreciate the response.


One thing I noticed today as well was there is some run on in the motor when switching it off. This happened a couple of times tonight.


I'll start with getting the throttle connector cleaned as you mention.

Can the foot throttle sensor be cleaned? is there a way to check if the throttle sensor playing up?


Unfortunately I'm in Adelaide otherwise I'd take you up on the offer.....and over a beer.



Cheers
Check your throttle plate is closing when shutting off the motor...you can push that plate by hand a few times and can clean some build up they get and may free it back up

The connector can be cleaned but it not a normal issue, best check your foot position if your able to log it to see if that the sensor s working as it should be
It may have nothing to do with the foot throttle it’s just something in the system to rule out easily

The fact it took a while to shut off may point you in the direction of the issue
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Last edited by Stoneman; 27-04-19 at 10:58 AM.
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  #18  
Old 27-04-19
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Give your throttle butterfly connector a good clean
There is something about them that can play up and the ecu doesn’t register it

There is info in the manual about twisting the butterfly by hand to loosen what could be carbon build up

What ever it is will be simple I would bet but just have to nail the issue as diagnosing them at a dealer can have you spinning in circles.
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  #19  
Old 27-04-19
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Cheer for the info Stoneman .

I'll make sure i cover off the items you have mentioned.

Thanks again mate.
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  #20  
Old 22-05-19
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For those that are interested or hopefully this may help others.


Turns out my EGR was the problem. Had that replaced and I'll also be doing a manifold clean and I will also add a Ryco catch can as well.


Thanks to all that responded in this thread and also Stoneman via private messages.



Cheers
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