Early(2007-09) Gen4 cruising performance & fuel consumption

User avatar
peterpot
Vehicle: 2009 Pajero 3.2 SWB
Country: SA
Location: Pretoria
Posts: 298
Joined: Wed Jan 27, 2016 3:42 pm

Re: Early(2007-09) Gen4 cruising performance & fuel consumption

Wed Apr 11, 2018 6:05 pm

As mentioned the thing that throws most people is the fact that it is not recognized as a fault by the ECU. If you monitor the faulty MAF sensor through the OBD / your phone app measuring the MAF air flow you can see it still gives a reading but it is obviously the wrong information and thus why the engine performs so badly.

I cannot wait to see the very best fuel consumption I can get now. I am hoping for / estimate according to what I saw on the computer around 11L/km.
User avatar
Gemaskerde Tuinvurk
Vehicle: 2007 Pajero 3.2 DiD LWB
Country: South Africa
Location: Northern Johannesburg
Posts: 641
Joined: Tue Jun 21, 2011 8:51 pm

Re: Early(2007-09) Gen4 cruising performance & fuel consumption

Wed Apr 11, 2018 6:23 pm

Well done Peter! Some good work done here.

Could you do a dyno run and post the results?

Id be keen to see if there is an issue with my power levels.



Sent from my iPhone using Tapatalk
Karl

Image
User avatar
peterpot
Vehicle: 2009 Pajero 3.2 SWB
Country: SA
Location: Pretoria
Posts: 298
Joined: Wed Jan 27, 2016 3:42 pm

Re: Early(2007-09) Gen4 cruising performance & fuel consumption

Wed Apr 11, 2018 6:38 pm

Unfortunately I do not have a dyno at my disposal.
However, having experienced such a dramatic improvement and the relatively inexpensive item, I would highly recommend keeping a good one handy for the day when it starts playing up.
User avatar
CATS
Contact:
Vehicle: 2001(Gen3) Pajero 3.2 Did, 2008(Gen4) Pajero Did
Location: Centurion
Posts: 2051
Joined: Fri Jun 12, 2009 11:11 pm

Re: Early(2007-09) Gen4 cruising performance & fuel consumption

Thu Apr 12, 2018 7:16 am

Thanks for the feedback Peter

It ties in with my experience where Mitsitech reckoned I need a new MAF sensor when I had the remap done at them. I was a bit sceptical as I too had no fault codes on the OBDII reader and could read the sensor, but they were adamant. After the remap it definately felt stronger and I always will wonder how much the MAF and how much the remap contributed.

I have since towed a lot and although I still think it is not at the same level of torque than my old gen3 manual it is still much better than initially.

By the way I fitted a second hand MAF which Arnold used as his tester unit. Cant recall cost.

Glad you are feeling better about the Pajero performance.

CATS

Sent from my LG-H870 using Tapatalk

2009 Pajero 3.2 DiDc Lwb GLS (Gen4) - Casper (Starting to grow on me)
2001 Pajero 3.2 DiD Lwb GLS Manual (Gen3) - Snoopy (SOLD but not forgotten)
2008 Pajero 3.2 DiDc Lwb GLS Auto (Gen4) - Silvester (SOLD)
Image
User avatar
stevedcp
Vehicle: pajero 3.2 swb 2009
Country: south Africa
Posts: 37
Joined: Sun Jan 31, 2016 3:09 pm

Re: Early(2007-09) Gen4 cruising performance & fuel consumption

Mon Apr 16, 2018 5:57 am

Well I decided to clean my MAF sensor this weekend after reading the post, and wow, dont need the software anymore, thanks guys, did a quick run from alberton to jet park, 9.4l/100.
User avatar
Greg_SA
Vehicle: 2008 Pajero DiDc LWB
Country: South Africa
Posts: 261
Joined: Tue Jun 29, 2010 2:38 pm

Re: Early(2007-09) Gen4 cruising performance & fuel consumption

Mon Apr 16, 2018 8:28 am

peterpot wrote:
Wed Apr 11, 2018 6:38 pm
Unfortunately I do not have a dyno at my disposal.
However, having experienced such a dramatic improvement and the relatively inexpensive item, I would highly recommend keeping a good one handy for the day when it starts playing up.
Hi Peter,

I experienced severe power loss due to a dirty MAF - See my posts here: viewtopic.php?f=24&t=7714&hilit=maf

In the end, I just cleaned the MAF sensor with ElectroKleen. I first cleaned it according to some instructions I found, but that was just the temp sensor in the MAF, not the thin filaments which measure airflow. As you mentioned, the price from agents is insane... but it is identical to various other vehicles, and sells for much less! R2300 at Toyota.

I still feel that my Pajero is under performing (especially compared to my previous Gen 3). I wonder if all of the small mods (like exhaust, etc) have made a difference for you? Maybe because your MAF was suspect, all those mods didn't really have an effect since they were limited by the suspect MAF. Now that the MAF is fixed, you see those small gains too?

I might consider still replacing the MAF with a new one... It might be that mine is still not perfect after the clean.

Cheers,
Greg
2008 Pajero DiDc LWB GLS
2005 Pajero DiD SWB GLS (sold)
User avatar
peterpot
Vehicle: 2009 Pajero 3.2 SWB
Country: SA
Location: Pretoria
Posts: 298
Joined: Wed Jan 27, 2016 3:42 pm

Re: Early(2007-09) Gen4 cruising performance & fuel consumption

Mon Apr 16, 2018 6:52 pm

Howzit Greg. I tried cleaning my sensor repeatedly. When I tried my son's sensor there was a big improvement and an even bigger improvement when I put the new one in. I am dying to take it on a long run (without towing } to see exactly what sort of fuel consumption I can get.

As I said for the cost of R1700 and the assurance of having a spare should the one fitted act up is a small .

Return to “Engines and Engine Management”

Who is online

Users browsing this forum: Bing [Bot], Google [Bot] and 2 guests

Login · Register

Login  •  Register