Isuzu DPF issues again

Cowabunga · Jun 2, 2021

ricky_rascal said:
Disappointing for you. Mine has throttle lag which is only noticeable when setting off. You press the pedal and nothing really happens for something around a second. Doesn’t sound a lot but if you need to pull out of a junction in hurry you need to account for the delay. Fly by wire throttle I’m told is problem but notice the Hilux I drive now and again, doesn’t do it or the Ranger I tried. It’s auto by the way. Other than that it doesn’t hesitate once rolling. But yes they know of the problems such as the DPF and do their best to ignore them. That said the dealer I use at York do their best to help but expect hands are tied to an extent by Isuzu.

So basically Rangers are unreliable Now I’ve said that Drillman will be down off the hill above and beat me to a jelly I nearly traded for a Ranger just over a year ago and some fellas in shoot said I’d dodged a bullet? Should I fall out with the d-max, then what? Would a S/H Ranger or Amarok be jumping out the frying pan into the fire. Bear in mind I’d still do a good proportion of shorter runs?

Might take a bit of convincing on that one if you’ve had it from new

I've had two Rangers and both run to 70,000 miles and not had a glow plug issue at all. In this T6 2.2 auto version, which as the same engine as later LR Defender, I've had an EGR valve replaced for a modified part under warranty, a leaking fuel cooler radiator [a tube with fins located between tank and engine that rubbed through on its mounting] and one rear leaf spring and the so-called fuel evaporator which is basically its 5th injector, touch wood. The evaporator was replaced by a non-genuine part at half Ford's price. It cost about £100 fitted.

I have found it to be above average reliable considering the stop-start, towing and work it does. Oh yes, the doors have stopped switching on the cabin courtesy light, which is a mystery of its own because I cannot find a traditional style switch anywhere for that job.

Cowabunga · Jun 2, 2021

Drillman said:
Never ever noticed my Ranger do a regen in almost 3 years of ownership

I have, several times, when coming to idle it will idle 200 revs higher than normal and there is very hot air and a hot smell from underneath. Otherwise and during driving, no, there is no indication of any sort that a regen is taking place.

paul&mandy · Jun 2, 2021

Are these trucks like tractors that your not supposed to switch off mid regen. Hard to tell with no dash light to say it's doing it..

Cowabunga · Jun 2, 2021

paul&mandy said:
Are these trucks like tractors that your not supposed to switch off mid regen. Hard to tell with no dash light to say it's doing it..

They can't be fussy otherwise there would be an indication and I would have had an issue in one of several diesel cars that I run with DPF's by now. Never had a single issue yet.

Old Tup · Jun 2, 2021

Older Mazda diesel saloons have a need for particular oil.....needless to say not cheap...but failure to use it seems to result DPF faults

Drillman · Jun 2, 2021

Cowabunga said:
I have, several times, when coming to idle it will idle 200 revs higher than normal and there is very hot air and a hot smell from underneath. Otherwise and during driving, no, there is no indication of any sort that a regen is taking place.

I’ve never noticed on either of mine in over 5 years of using them

mine are 3.2 motors though and yours I believe is the 2.2 so maybe that’s the difference

ricky_rascal · Jun 2, 2021

reboot said:
Iv raised a query with isuzu about my post. I had a long chat with Lee that deletes dpf and egr. I’m a bit concerned about doing this because of mot and insurance invalidate but it’s fairly unlikely they would take it apart to check.
It’s quite concerning how isuzu seen to have no clue how to fix or prevent the problem.
I’m hoping however isuzu will redeem their reputation though and start talking about the problem.

Ha!! Like the last line of your post. Do you by any chance believe in Father Christmas

I admire your optimism but doubt they'll show any interest. It is quite ridiculous that we have to think about doing something illegal because of Isuzu's bad engineering? I've not noticed it being as bigger problem with other pickups? It's not unknown for diesels tootling round town having problems with blocked dpf's. My pickup does short runs but the shortest is 7 miles but did 190 miles in two trips over last 4 days. I really don't think I can be bothered running backwards and forwards to dealer making little progress so it can run till it stops then it's under warranty so fix it please. If I can afford to I'll swap it at backend even if it means s/h Ranger or VW.

Johnnyboxer said:
Regen every 30-40 Miles?
That cannot be right
My Hilux hardly does a regen, that I noticed

No it isn't right at all!

Drillman said:
Never ever noticed my Ranger do a regen in almost 3 years of ownership

That's because you have that rap music turned up so loud you'll go deaf - or blind

H200GT said:
Hardly ever notice my Navara regen, only time I can tell its done / in the middle of one is when I happen to park up mid regen. There is a faint hot smell outside the vehicle and sometimes a faint tinging sound as the exhaust temps are up. Other than that I’d never know it was doing it.

That heat and faint tingling is the chassis oxidising away

paul&mandy said:
Are these trucks like tractors that your not supposed to switch off mid regen. Hard to tell with no dash light to say it's doing it..

Isuzu recommended you allow it to finish as stopping it mid regen can allow diesel to run down cylinder walls and into sump.

Drillman · Jun 2, 2021

@ricky_rascal Rap music

nah not my style...

AC/DC is more me

Cowabunga · Jun 2, 2021

Drillman said:
I’ve never noticed on either of mine in over 5 years of using them

mine are 3.2 motors though and yours I believe is the 2.2 so maybe that’s the difference

If you happen to shut the engine off during a regen you will feel and smell the heat coming up the side of the car off the exhaust. There should be no difference between engine or vehicle type or brand. They all get blerdy hot as that is the nature of the beast.

Cowabunga · Jun 2, 2021

Drillman said:
@ricky_rascal Rap musicnah not my style...

AC/DC is more me

Headbanging would explain a lot.

ricky_rascal · Jun 3, 2021

Drillman said:
@ricky_rascal Rap musicnah not my style...

AC/DC is more me

Aww, now we’re talking

Cowabunga said:
If you happen to shut the engine off during a regen you will feel and smell the heat coming up the side of the car off the exhaust. There should be no difference between engine or vehicle type or brand. They all get blerdy hot as that is the nature of the beast.

Yes, the smell of cow shhh er muck cooking on it is a give away. On the Isuzu the engine becomes even more clattery.

reboot · Jun 4, 2021

Was reading about the same problem on the Isuzu dmax/rodeo Facebook page and someone with the same problem mentioned the oil dilution rate reset.
Has anybody else with this problem had their car serviced not by isuzu and not aware the oil dilution rate has to be reset?
I’m hoping and praying this is the cause of mines problem.

ricky_rascal · Jun 5, 2021

As mentioned, when dealer changes oil he also resets the oil dilution parameter. I mean why the f’in hell release something these days that drops diesel in the sump? Some indies are able to do it but not all. Ive been told if it’s not reset then then the ECU thinks the oil is diluted and regens more. How in the blood and stomach pills does that even help at all. “Oh I know, the oil is getting diluted with diesel - let’s do something that makes things worse”.

To answer your question it may stop your d-max regenerating as much but I very much doubt it. Seems to me to be a bad design. I’m thinking the solution is webuyanyva dot com and then look elsewhere.

ricky_rascal · Jun 5, 2021

H200GT said:
Hardly ever notice my Navara regen, only time I can tell its done / in the middle of one is when I happen to park up mid regen. There is a faint hot smell outside the vehicle and sometimes a faint tinging sound as the exhaust temps are up. Other than that I’d never know it was doing it.

I rudely, though tongue in cheek commented about chassis oxidising away the other day. This week had a local chap in with smaller 360 to dig a hole. He pulls it with his 3 year old Navara. It is younger than my d-max by a few months but having a look underneath when he wasn’t looking was cleaner than my truck. There were odd stone chips to wing revealing what look like it was galvanised? In wheel arches the Nissan paint was wearing a lot better than my Isuzu. Underneath it was remarkably rust free. As both trucks done similar mileage on same roads and we’re a similar age the paint and underneath on the Nissan was wearing a lot better.

H200GT · Jun 5, 2021

ricky_rascal said:
I rudely, though tongue in cheek commented about chassis oxidising away the other day. This week had a local chap in with smaller 360 to dig a hole. He pulls it with his 3 year old Navara. It is younger than my d-max by a few months but having a look underneath when he wasn’t looking was cleaner than my truck. There were odd stone chips to wing revealing what look like it was galvanised? In wheel arches the Nissan paint was wearing a lot better than my Isuzu. Underneath it was remarkably rust free. As both trucks done similar mileage on same roads and we’re a similar age the paint and underneath on the Nissan was wearing a lot better.

They all rust, its part of their “design life”, if manufacturers wanted to stop it they wouldn’t simply galvanise them. Granted Nissan did have a particularly bad issue with the D40 model, but did deal with the claims well overall I feel buying them back at over market value or offering huge discounts on new model.

I am not convinced Nissan have done much to improve the later NP300’s bar a couple of bits of steel to strengthen the chassis, but they may well have used a higher grade steel or better paint, but only Nissan will know. Or at least we wont know for another 3-4 years by the time the first models approach 10 years old where many of the D40’s failed.

On my second Navara now, and I think £ for £ its hard to find anything better. Shame it looks like it will be my last with it looking increasingly likely it will be discontinued in Europe next year

reboot · Jun 5, 2021

ricky_rascal said:
I rudely, though tongue in cheek commented about chassis oxidising away the other day. This week had a local chap in with smaller 360 to dig a hole. He pulls it with his 3 year old Navara. It is younger than my d-max by a few months but having a look underneath when he wasn’t looking was cleaner than my truck. There were odd stone chips to wing revealing what look like it was galvanised? In wheel arches the Nissan paint was wearing a lot better than my Isuzu. Underneath it was remarkably rust free. As both trucks done similar mileage on same roads and we’re a similar age the paint and underneath on the Nissan was wearing a lot better.

I think with the whole “my navara chassis rusted and snapped” fiasco they redoubled their efforts on later one to paint the chassis much better.
but by the amount I see for sale second hand their probably dropping them because the stigma of chassis rust has still not been forgotten

Drillman · Jun 5, 2021

ricky_rascal said:
I rudely, though tongue in cheek commented about chassis oxidising away the other day. This week had a local chap in with smaller 360 to dig a hole. He pulls it with his 3 year old Navara. It is younger than my d-max by a few months but having a look underneath when he wasn’t looking was cleaner than my truck. There were odd stone chips to wing revealing what look like it was galvanised? In wheel arches the Nissan paint was wearing a lot better than my Isuzu. Underneath it was remarkably rust free. As both trucks done similar mileage on same roads and we’re a similar age the paint and underneath on the Nissan was wearing a lot better.

reboot said:
I think with the whole “my navara chassis rusted and snapped” fiasco they redoubled their efforts on later one to paint the chassis much better.
but by the amount I see for sale second hand their probably dropping them because the stigma of chassis rust has still not been forgotten

@ricky_rascal you should take a trip to CoPart on full Sutton industrial estate, last time I went past they had a whole car park dedicated to D40 Navaras with I assume dodgy chassis.
im not that impressed with the chassis coating on my almost 3 year old Ranger, will be having words with ford before warranty is up, and failing that we have a 4 post lift and a big compressor here so I will give it a coat of something once the warranty has expired.

ricky_rascal · Jun 6, 2021

Drillman said:
@ricky_rascal you should take a trip to CoPart on full Sutton industrial estate, last time I went past they had a whole car park dedicated to D40 Navaras with I assume dodgy chassis.
im not that impressed with the chassis coating on my almost 3 year old Ranger, will be having words with ford before warranty is up, and failing that we have a 4 post lift and a big compressor here so I will give it a coat of something once the warranty has expired.

For a minute I thought you were going to say go down there and leave my d-max with all the other scrappers

Ive been past in a tractor which gives a good view in. I’ve seen the whole area dedicated to the Navaras with back ache!

Not all that impressed with the chassis coating on the isuzu either but as has been said they aren’t made to last. With the rep Nissan have I was impressed with Seb’s Navara underneath. Maybe still thin steel though

You have a 4 post lift? Wish I knew that before crawling under d-max to spray some Lanoguard on. Don’t know if it’s any good but as easy to apply thought I’d give it a go. It seems to be hanging around in wheelwells and resists pressure washing.

Drillman · Jun 6, 2021

ricky_rascal said:
For a minute I thought you were going to say go down there and leave my d-max with all the other scrappers

Ive been past in a tractor which gives a good view in. I’ve seen the whole area dedicated to the Navaras with back ache!

Not all that impressed with the chassis coating on the isuzu either but as has been said they aren’t made to last. With the rep Nissan have I was impressed with Seb’s Navara underneath. Maybe still thin steel though

You have a 4 post lift? Wish I knew that before crawling under d-max to spray some Lanoguard on. Don’t know if it’s any good but as easy to apply thought I’d give it a go. It seems to be hanging around in wheelwells and resists pressure washing.

4 post lift is a million years old but there if you need it.

not long since it was used to pump several gallons of waxoyl into an elderly Landrover chassis. Makes life a lot easier

Cowabunga · Jun 6, 2021

Drillman said:
@ricky_rascal you should take a trip to CoPart on full Sutton industrial estate, last time I went past they had a whole car park dedicated to D40 Navaras with I assume dodgy chassis.
im not that impressed with the chassis coating on my almost 3 year old Ranger, will be having words with ford before warranty is up, and failing that we have a 4 post lift and a big compressor here so I will give it a coat of something once the warranty has expired.

They all design and build their chassis to fail. Hopeless paint. Rust traps. Holes specifically placed to allow the ingress of salty road water to ensure that the chassis also rusts from the inside out. It would actually cost them less to build by not stamping holes in the outer walls and it wouldn't cost much to dip the whole chassis in zinc based primer before coating in a better grade of topcoat.
Not one brand builds what I would class as 'a quality product'. The may or may not be reliable for a good few years and may drive nicely and the panel gaps are small and even, but they specifically avoid building quality products in the way I measure major aspects of quality. If its not built to last long term, it is not a quality product.

Waxoyl is pretty hopeless stuff but better than nothing on a new chassis. It won't do anything worthwhile on a chassis that has already started to get rusty. I have always Waxoyled new vehicle chassis in the first couple of days after delivery. Done it since late 1972 when I removed the wheels of the new MF165 and pained underneath the mudguards to protect them.
A couple of weeks ago I power washed the chassis of the Ranger and, after it had dried, sprayed oil and diesel mix over it. Not EP90, which I once used on the Land Cruiser which literally caused a stink for a year afterwards. The oil and diesel mix keeps the previous Waxoyl soft and active. Not much Waxoyl left of the original in the visible wheel arch area which is power washed now and again, which isn't a surprise when considering that the Ranger is now seven years old.
I've rubber plugs and plastic stop-ends blocking all the visible holes in the outer chassis walls in the wheel arch areas, so that if they had sprayed any paint inside the chassis box sections it would remain clean, dry and rust free inside. Holes in less vulnerable areas and the inner chassis walls are left open to provide ventilation.

Isuzu DPF issues again

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