TDV6 Engine Faults

[101RRS]

Drove down to Melbourne from Canberra towing a 400kg trailer - no issues and averaged about 10.5l/100km sitting on 110kph.

I picked up my load of another 700kg and set off back for Canberra sitting on about 100kph and managed 12.5l/100km and to get a flat on my nice new GGs via a large piece of metal. After changing tyres and refuelling at Glen Rowan fuel consumption was 15l/100km. 150km later the car just died with no throttle response and the i on the dash display. The i showed "Engine System Fault" but no check engine light. I pulled over with no throttle response and switched off and back on - all now OK.

About 50km further on power died but some engine response was there so again pulled over - the display this time indicated "Special Programs Off". Like before switching off and back on cleared the issue and I was off again.

Another 50km when passing a too fast B double I gain lost power - still able to pull the 1.1tonne at 110kph and took ages to get past the truck and again the display indicated "Engine System Fault" but no check engine light. This time I slipped into neutral, switched off and restarted and fault cleared and no further issues for the couple of hundred kms home.

This morning I found 3 engine fault codes

1. P0101 Intermittent Electrical Fault Mass Air Flow

2. P132B Turbo Boost Control A Intermittent Signal Fault

3. P023D Manifold Absolute Pressure - Boost Sensor A - Intermittent General Signal Fault.

Any ideas on what the cause could be for the loss of power - engine has a BAS map, has blanked EGRs (serviceable egrs connected electrically), inlet manifold butterfly removed and the inlet and MAP were recently cleaned of gunk.

Thanks

Garry

[RichardK]

Hi Garry,

As you know the faults I suspect you have a Faultmate, if you have, then why not try posting your questions the Blackbox site? They have a good knowledge base there. Another alternative would be to contact BAS, Pete really knows his stuff.

[101RRS]

Hi Garry,

As you know the faults I suspect you have a Faultmate, if you have, then why not try posting your questions the Blackbox site? They have a good knowledge base there. Another alternative would be to contact BAS, Pete really knows his stuff.

Yes - only the fault reader version.

Thanks for the information - I didn't know that - I will put them up there.

Cheers

garry

[Graeme]

If the MAF had been a signal fault then I'd suspect a sticky turbo actuator mechanism. However being an electrical fault I suspect the MAF is the cause.

[Fatso]

Have you pulled and checked the Elect connections to the Maff and Map for security & cleanleness etc or maybe a split in air intake system . When i checked my Map originaly it was totaly blocked and had been so for a long time so not sure what role it plays ( i know what role it should play ) as no faults ever appeared . I have done the same mod as you but no faults as yet , touch wood . Al

[Graeme]

maybe a split in air intake systemThis being a common fault as hoses get older, hopefully its the cause.

[roamer]

I had similar trouble, but was on D4 ended up being bend just before airbox, sucking closed, but D4 3lt have solid bend and D3 has perforated unless you have snorkel, worth having alook around there. Good luck

[101RRS]

Have you pulled and checked the Elect connections to the Maff and Map for security & cleanleness etc or maybe a split in air intake system . When i checked my Map originaly it was totaly blocked and had been so for a long time so not sure what role it plays ( i know what role it should play ) as no faults ever appeared . I have done the same mod as you but no faults as yet , touch wood . Al


Not yet - when I blanked my engine the whole intake duct and the MAP sensor were cleaned up - I will pull it out and recheck just to be sure.

[Fatso]

i was just reffering to elect conectors to map and maff just to make sure they have not pulled out a bit etc . as mine is blanked like yours but with working egr,s in situ i have not had any alarms show up on the dash after about 4 weeks of driving , out of curiosity i connected my faultmate up and found a P0402 exhaust gas recirc flow excessive but no other codes , cleared it and will see what happens , mine is a january 2007 build car so will just keep track of system for now .

[101RRS]

I have been driving around locally and have no issues at all. I have filled up and calculated fuel consumption which was 18.5l/100km where the trip computer showed 14.9l/100km. (this is the worse fuel consumption I have ever got). I am used to a 10% error but that difference is a bit over the top - sort of defeats the purpose of having a trip computer in the car.

I decided to lift the engine cover to check the turbo hoses for leaks and splits but gave up - so without pulling things off to get access how can you inspect the hoses to see if they are Ok.

Thanks

Garry

[Barryp]

Garry,
I presume that the trip computer was reset at the last fill otherwise it will be reading the consumption since the last time it was reset. Just a thought as mine is fairly accurate compared to actual usage and distance for each tank full.
Regards
Barryp

[101RRS]

Yes - reset - threads on the issue of trip computer accuracy in both D3 and D4 variants would indicate it under reads by about 10% and that is the norm for my car but for some reason on this leg the inaccuracy was much greater.

Garry

[Fatso]

I have been driving around locally and have no issues at all. I have filled up and calculated fuel consumption which was 18.5l/100km where the trip computer showed 14.9l/100km. (this is the worse fuel consumption I have ever got).

Thanks

Garry

18.5 lts/100km is not good:mad: , something must be out of whack to use that much fuel :eek: . Al

[101RRS]

18.5 lts/100km is not good:mad: , something must be out of whack to use that much fuel :eek: . Al

I was towing about 1.1t but have done before and got about 13l/100km then. Previous tow was wider where this one was higher so wind resistance would have been about the same in both cases.

Car is driving around OK now - around town I am getting about 11/100km which is about the norm for around town.

Anyway time to weight and see what develops.

Cheers

Garry

[Grappler]

i was just reffering to elect conectors to map and maff just to make sure they have not pulled out a bit etc . as mine is blanked like yours but with working egr,s in situ i have not had any alarms show up on the dash after about 4 weeks of driving , out of curiosity i connected my faultmate up and found a P0402 exhaust gas recirc flow excessive but no other codes , cleared it and will see what happens , mine is a january 2007 build car so will just keep track of system for now .

My RRS MY2006 has recently finished its extended warranty so I blanked the EGR and removed the tubes. There has been no change in performance, but when I scan the HCan I get an intermiitent DTC P0402 Exhaust Gas Recirculation Flow Excessive Detected . No messages on the dash however. Is this to be expected?

Fatso, how did you pull up with your tracking of the sytem?

[Fatso]

My RRS MY2006 has recently finished its extended warranty so I blanked the EGR and removed the tubes. There has been no change in performance, but when I scan the HCan I get an intermiitent DTC P0402 Exhaust Gas Recirculation Flow Excessive Detected . No messages on the dash however. Is this to be expected?

Fatso, how did you pull up with your tracking of the sytem?

Gday , after the first time i found the po402 ( excess egr ) i kept resetting about evry week for about 6 weeks but it kept coming back , although i had no other codes or fault lights come up i eventualy put the egr system back in operation , untill i could find out if this PO402 was going to be a problem in that it would lead to a limp home mode or somthing but have unable to nail it . So i dont know if the PO402 is just a reading that just sits in the background or not . Be good if someone can throw some light on this . Al

[Grappler]

Thanks Al,

Ive just put a post on BBS, perhaps someone on there can shed some light.

In the meantime if anyone else has logged this fault code P0402, after blanking EGR on pre 07 TVD6 , let us know if it causes any dramas, or if you can safely ignore it

[Fatso]

Thanks Al,

Ive just put a post on BBS, perhaps someone on there can shed some light.

In the meantime if anyone else has logged this fault code P0402, after blanking EGR on pre 07 TVD6 , let us know if it causes any dramas, or if you can safely ignore it

Good idea , i have posted elswhere and scoured the net on other forums but can not seem to get any info , my gut feel is the PO402 just sits in the background . I reckon all who have blanked ther pre 2007 td6 must have the same reading recorded , as mine is a Jan 2007 build i am hoping it is the same as pre 2007 build td6 cars as stated elswhere . Hope you get some info from BBS . Al

[Grappler]

Got a reply to my enquiry from Pete at Bellautos. As you most likely know, they produce and supply blanking kits and ECU remapping solutions

He advised that because the EGR is mechanically blanked not electronically disabled, it is common to log P0402 fault. It does not present a problem so can be ignored

[Rich84]

Fatso is your car a 6A VIN or a 7A ? That will tell you what 'build' it is.

ie SALLSAA136Axxxxxxx

[Fatso]

Fatso is your car a 6A VIN or a 7A ? That will tell you what 'build' it is.

ie SALLSAA136Axxxxxxx

Gday , mine is a A7xxx , the early modle A7 were able to be have the egr blanked ok as i understand it . Al