D Max EGR valve

[Mursal]

If you suspect the MAF sensor disconnect altogether and see if things improve, as most have a fallback set of measurements the controller can work from.

 

[Courier]

It's due a swap August so not really wanting to mess too much.
Is the egr blank a diy job on its own?

Generally an EGR needs an educated re-map.

These guys are masters - Main dealers use them when their own trained "rag-hands" are stumped ....http://www.feather-diesel.co.uk/

Only about 40 miles from you, or 70 if you go the quick long way around.

 

[Dolomite]

@Dave W how did you get on with this issue?

 

[Dave W]

@Dave W how did you get on with this issue?

Put some cleaner in and made no difference.
The more I think about it I'm not sure how a diesel additive can do any work on the exhaust side of things.

Think I'll get the egr valve off next and get some oven cleaner round it

 

[Dave W]

@Dave W how did you get on with this issue?

Put some cleaner in and made no difference.
The more I think about it I'm not sure how a diesel additive can do any work on the exhaust side of things.

Think I'll get the egr valve off next and get some oven cleaner round it

Having said that, I didn't use the one you recommended Rob. Think something got lost in translation somewhere. Clicked on wrong link or something, just looked at it properly . I'll give your recommendation a whirl first

 

[Dolomite]

Having said that, I didn't use the one you recommended Rob. Think something got lost in translation somewhere. Clicked on wrong link or something, just looked at it properly . I'll give your recommendation a whirl first

I only ask as I’ve a friend having the same issue as your motor. He’s scratching his head on it and wondered if I could give him any feedback.

 

[Dave W]

I only ask as I’ve a friend having the same issue as your motor. He’s scratching his head on it and wondered if I could give him any feedback.

Ordered some of the correct stuff. I'll let you know

 

[Lincs Lass]

Check mot regulations,. If you tamper with or block of the egr it's classed as a fail

 

[nosmokenopoke]

My older Isuzu rodeo had eml come on because of faulty egr valve. Ordered the electrical part of the valve only on eBay for £125. Sorted it. Would imagine the same can be done with newer models.

 

[Dave W]

One thing I've not established. Would the blocked egr affect the mpg and power?

 

[Dolomite]

Everything I have ever read on them and about egr and dpf’s is that they can and will seriously affect both of not working correctly. That’s why many for go for the deletes and rid them selves of any issues.

 

[Alfred]

First place id look for reduction in power on a dmax is injectors !
How often is it doing a regen , just out of interest ?

 

[MrNoo]

One thing I've not established. Would the blocked egr affect the mpg and power?

Yes, you say a "blocked" egr but quite often they carbon up, not the valve but the carbon/oil go up into the inner workings and (in my case) hold the valve open a tad, which meant the turbo wouldnt be getting the full exhaust gas to spool up like it normally would, hence boost was down as the exhaust gas was going back into the engine intake system instead of spooling up the turbo's.
I really noticed a difference, before I noticed it would almost surge when revved past 2,000 rpm despite filter changed.
Changed EGR and I can actually hear the turbo spool up when driving with the window down (I couldnt before) The engine pulls a lot better and I can rev it up to 4k without any surging at all.
So in my case it was a lot better than it was but I still have to go into 2nd gear when towing a trailer loaded with Fergie/plough up the Birdlip Hill by the Air Balloon.

 

[Dave W]

Yes, you say a "blocked" egr but quite often they carbon up, not the valve but the carbon/oil go up into the inner workings and (in my case) hold the valve open a tad, which meant the turbo wouldnt be getting the full exhaust gas to spool up like it normally would, hence boost was down as the exhaust gas was going back into the engine intake system instead of spooling up the turbo's.
I really noticed a difference, before I noticed it would almost surge when revved past 2,000 rpm despite filter changed.
Changed EGR and I can actually hear the turbo spool up when driving with the window down (I couldnt before) The engine pulls a lot better and I can rev it up to 4k without any surging at all.
So in my case it was a lot better than it was but I still have to go into 2nd gear when towing a trailer loaded with Fergie/plough up the Birdlip Hill by the Air Balloon.

Thanks. That makes sense as I've half suspected turbos not making full pressure

 

[Dave W]

How often is it doing a regen , just out of interest ?

Don't know tbh. Never notice it doing one and don't watch the gauge

 

[Mursal]

If your still in doubt after cleaning, just slide a bit on bean tin in to block it, just to test?
Then you know its not leaking, see if there is any difference

 

[MrNoo]

If your still in doubt after cleaning, just slide a bit on bean tin in to block it, just to test?
Then you know its not leaking, see if there is any difference

Yes, this would be a good try, I would however drill a small hole in the plate, as you'll end up with warning lights on the dash if not careful, plenty of info on the net re blanking plates for EGR on Isuzu D- Max's

 

[MrNoo]

Thanks. That makes sense as I've half suspected turbos not making full pressure

Mine had plenty of torque low down but as soon as you needed some grunt it just ran out of steam almost to the point of me thinking it had a boost issue, boost leak. Almost as if it was working ok on the small turbo but as soon as the larger one was needed it just wasnt producing boost.

 

[davidroberts30]

First place id look for reduction in power on a dmax is injectors !
How often is it doing a regen , just out of interest ?

simple things first is check the air hoses!!
not uncommon for the turbo hoses to split venting boost pressure!!

 

[Werzle]

Mate had his egr playing up and garage made out it was a big job but jed at tallis amos leominster changed it in minutes . Think with labour it was around £100. Jeds moved now to another garage in leominster , not sure which.