Pajero 4WD Club of Victoria Public Forum Pajero 4WD Club of Victoria Public Forum

Go Back   Pajero 4WD Club of Victoria Public Forum > Vehicles > Generation 3 Pajero

Generation 3 Pajero NM - NP Models 2000 - 2006

Reply
 
Thread Tools Display Modes
  #1  
Old 10-08-09
Powie1 Powie1 is offline
Junior Member
 
Join Date: Aug 2007
Posts: 30
Default paj not running well

Hi Guys

I'm taking the paj (3.5l v6) to MM on Thursday to put it on the MUTT as its not running well. What else shoud they check ie fuel pressure, fuel filter, etc. I'd apprecaite your advice?
Reply With Quote
  #2  
Old 10-08-09
mrbitchi's Avatar
mrbitchi mrbitchi is offline
Valued Member
 
Join Date: Jun 2007
Location: Brisbane
Posts: 3,581
Default

"not running well" meaning...??
__________________
Cheers, John.
LC200 V8 goodness

MY12 LC200 GXL 4.5Lt V8 twin turbo, GVM upgrade, ARB bar, Warn winch, Outback Acc rear bar and dual carrier, TJM sidesteps, Bushskinz, Long Ranger 180Lt tank, Black Widow drawers, cargo barrier, Polaris Awning, +++
Ex - NM auto, 2"Kings, Bilsteins, Buckshots, Wildcat headers, 2.75" Mandrel bent exhaust, Injected LPG, Smartbar, Scraper bar, Bushskinz, Custom steps, Dual Batteries, Breathers, Black Widow drawers, Polaris Awning.
Reply With Quote
  #3  
Old 10-08-09
Powie1 Powie1 is offline
Junior Member
 
Join Date: Aug 2007
Posts: 30
Default

seems to be a bit flat between (1500-200 rpm) and down on power with a marked increase in fuel consumption 18l/100km for the last tank. on a recent long trip I was expecting to get mid 13's/100 for hwy driving but I could only manage 15/100 with no change in driving style. Recently had the leads done and timing belt (assuming this was done correctly). MM inspect the fuel filter so I'm going to get them to change this while they are at it.
Reply With Quote
  #4  
Old 11-08-09
mrbitchi's Avatar
mrbitchi mrbitchi is offline
Valued Member
 
Join Date: Jun 2007
Location: Brisbane
Posts: 3,581
Default

Exhaust system bent/crimped?
__________________
Cheers, John.
LC200 V8 goodness

MY12 LC200 GXL 4.5Lt V8 twin turbo, GVM upgrade, ARB bar, Warn winch, Outback Acc rear bar and dual carrier, TJM sidesteps, Bushskinz, Long Ranger 180Lt tank, Black Widow drawers, cargo barrier, Polaris Awning, +++
Ex - NM auto, 2"Kings, Bilsteins, Buckshots, Wildcat headers, 2.75" Mandrel bent exhaust, Injected LPG, Smartbar, Scraper bar, Bushskinz, Custom steps, Dual Batteries, Breathers, Black Widow drawers, Polaris Awning.
Reply With Quote
  #5  
Old 12-08-09
Powie1 Powie1 is offline
Junior Member
 
Join Date: Aug 2007
Posts: 30
Default

John exhaust all good. I drove down the coast on the weekend and fuel economy was okay (you always want better) but I believe it’s still running funny. I'll see what MM say tomorrow and go from there.
Reply With Quote
  #6  
Old 27-01-10
Ricstar Ricstar is offline
Member
 
Join Date: Mar 2008
Location: Brisbane
Posts: 146
Send a message via MSN to Ricstar
Default

Been awhile since you posted.

I am keen to know what the outcome was.
__________________
03 NP Exceed 3.5 Auto - LPG Inj, Tinting, 2.5t tow, Piranha / Remco dual battery setup, Maxxis 771 265/70/R16 - LT, GME 3420 UHF, 2" lift Kings and Bilstien?s, Engel 40L, Custom rear shelf, one wife, one child, Jayco Swift, no boat, And a Toy Poodle who prefers to ride in the Paj over the Commodore (My Mitsubishi Puppy).
Xmas list, Snorkel, Cargo Barrier, Smartbar
Reply With Quote
  #7  
Old 28-01-10
C&S Evo7
Guest
 
Posts: n/a
Default

There has been a spate of these problems with the 3.5 we have here recently accordint to my pal who is a mmc tech.
several customers have spent $$$$ trying to get it fixed . he reports that there is a tiny microfilter in the end of the fuel line where it fits the engine which gets blocked,
I dont know if it will apply to your sohc engines tho, but it cost £1.76 for the filter
Reply With Quote
  #8  
Old 28-01-10
justin580 justin580 is offline
Junior Member
 
Join Date: Jan 2010
Location: Doncaster
Posts: 30
Default

Quote:
Originally Posted by C&S Evo7 View Post
There has been a spate of these problems with the 3.5 we have here recently accordint to my pal who is a mmc tech.
several customers have spent $$$$ trying to get it fixed . he reports that there is a tiny microfilter in the end of the fuel line where it fits the engine which gets blocked,
I dont know if it will apply to your sohc engines tho, but it cost ?1.76 for the filter
Can you please give me more information about this filter, as this is a problem i am having with my Pajero also mine is 3.5 DOHC dual fuel.
Reply With Quote
  #9  
Old 28-01-10
Ricstar Ricstar is offline
Member
 
Join Date: Mar 2008
Location: Brisbane
Posts: 146
Send a message via MSN to Ricstar
Default

I have an NP 2003 3.5 auto.
18 months ago fuel consumption was 17L/100k around town on Petrol and 18L/100 Injected LPG. which is not great but I could put up with it.
13L/100 Petrol - 15L/100 LPG on a trip.
Now 96000km
All is not well anymore.
Still ok on trips at 15L/100, however around town is now around 25L/100 on either Petrol or LPG.
Plugs replaced with new Platinum 18 months ago when LPG conversion was installed.
All oils, inc auto was recently serviced (90k) and new air filter, but no difference.

As my issues are consistent across both Fuel systems, I make the assumption that it must be something that is specific to both fuels, ie Intake manifold (maybe leaking) or exhaust leaks, catalytic or exhaust issue, PCV, EGR -(if it has it). Ignition system. If an intake leak I would expect the ECU to compensate based upon readings/feedback from the o2 so not ruling this out but would it affect power requiring me to put the foot down more for the same speed.

Power seems normal and engine is running smooth. I borrowed a O2 wideband analyzer and the Stoic of 14.5 for Petrol and 15.5 for LPG is spot on in closed loop and goes into open loop when expected, ie:
Deceleration - all injectors off - full lean,
Foot to floor - Rich
Cold starts. - Rich.

I have also jacked up the Paj and checked to ensure brake, bearings or drivetrain are not binding. All wheels seem to need a bit of effort to turn, but is consistent on all four wheels.
Only thing I found was the spare on the back door wouldn't turn.

Have no issues on slipping auto.

Hence I am keen to know what solutions others have had to fix high fuel consumption issues

Appreciate any further ideas, options or suggestions.
__________________
03 NP Exceed 3.5 Auto - LPG Inj, Tinting, 2.5t tow, Piranha / Remco dual battery setup, Maxxis 771 265/70/R16 - LT, GME 3420 UHF, 2" lift Kings and Bilstien?s, Engel 40L, Custom rear shelf, one wife, one child, Jayco Swift, no boat, And a Toy Poodle who prefers to ride in the Paj over the Commodore (My Mitsubishi Puppy).
Xmas list, Snorkel, Cargo Barrier, Smartbar
Reply With Quote
  #10  
Old 28-01-10
Pete's Avatar
Pete Pete is offline
Valued Member
 
Join Date: Jan 2010
Location: Mornington Peninsula, Vic
Posts: 946
Default

How you so carefully calculate your fuel usage? My NM exceed doesnt have anything usefull like a trip computer, it has something incredibly useless called an RV meter.
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +10. The time now is 06:28 PM.


Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2020, vBulletin Solutions, Inc.