Boost/power troubles after EGR and/or new intercooler

[Drew]

My engine light went out a couple of days ago and I didn't even clear the code.

Maybe there's a "I've tried telling you but noooo you won't listen" timeout

[Hodge]

My engine light went out a couple of days ago and I didn't even clear the code.

Maybe there's a "I've tried telling you but noooo you won't listen" timeout

Haha interesting that one. Maybe mine will be the opposite, for a while no engine light and then it'll start screaming at me .

[Hodge]

Bringing this back up on a negative note...
This issue has not gone away, as the car is still an absolute slug sometimes, and I really do not know what steps to take next or what else to look at.
So to summarize again...
At the moment, the car is 50/50. Half the time is has plenty of go across all gears, across all speeds. Sometimes when I have to put a bit of boot in to over take or something, I'm amazed how much grunt it can have when it wants to. Very responsive acceleration/pedal.
Unfortunately the other half the time, the car is a cooking slug. An example, on the ring road today, flat road, sitting at 80km/h in 4th or 5th it doesn't matter... Put the boot in and she just sits there labouring/cooking away. EGT's start rising, the car very slowly gaining momentum... The turbo though at that moment is already peaking max boost?! But, a day earlier, the same instance the car would have had all the power in the world. Just doesn't make sense.

I know my turbo is most likely shot, as it has a mechanical winding noise. I opened the passenger window today, and turned the snorkel head towards the windows and it was pretty evident something isn't right in the snail. However, I'm unsure if this is the culprit?! Is it possible to have max boost, turbo spools up quick and yet no power? The fact the EGT's are rising means fuel is being pumped in so, I'll assume issue isn't on the fuel side?

I have tried everything. New MAF's, fiddling with the needle and dawes valves to no end. Annoyed mudski to hell and back adjusting and fine tuning it and still no go... Changed air filters, fuel filters, new intercooler, EGR blocked or not blocked... Makes fark all difference.
Nissan has had a look, but to them if there is no codes, then there is no problem. Had a mates mechanic have a look too and he says he cannot find nothing. Although I dont know how much hes actually looked.

To say I'm pissed off is, an understatement. I'm rapidly losing faith in these CRD's.
Anyways thats my whinge for the evening.

[mudski]

What's the word about your turbo? Is it fubar or not? Sort this out first I reckon. As I have been in the passenger seat with you mate, I have seen how you drive the car. To be honest mate. Rev that car a bit harder and draw out the gears more. I had the impression that you weren't driving in the Rev range mate. These motors really don't like to be under the Rev range. But it could be your turbo playing silly buggers mate, I dunno...
I'd be interested to hear more about the turbo though.

[Jamiepatrol]

Hi hoge. i had similar woes on my 2010 crd, which is now written off. nissan thought it was the pedal, which was replaced under warranty?
have you followed proper dawes and needle setup by chazz? thats the guide i used and it seemed to make my car a tad more responsive?
there is a place in bundoora i believe, turbo engineering, assuming youre still in thomastown, maybe they can suss your turbo out???

[Hodge]

@ Mudski
Understand what you're saying mate, these things like to be revved. This problem I'm having isn't that. In 4th, it's sitting at 3000rpm, turbo going full chat, sitting at around 80-85, I'm well into the power band range, pedal to the floor and she goes nowhere still. At this stage the turbo/boost is already maxed, 17psi. 5th gear is even worse. It just seems like turbo runs out of play, it's already spinning it's gaskets off and just can't push any further.
And once again, another time, identical scenario, and she will be a rocket...

I'm curious though, aim of the boost setup is to have roughly 10 psi at 100km/h? Is this on a flat road? Cruising?

As for the turbo, I'll go to JPC, see what mark says. Can't think of any other good local place for this. He initially diagnosed it as a mechanical noise about a year ago. Unsure what a turbo replacement will sting me, like for like.

Hi hoge. i had similar woes on my 2010 crd, which is now written off. nissan thought it was the pedal, which was replaced under warranty?
have you followed proper dawes and needle setup by chazz? thats the guide i used and it seemed to make my car a tad more responsive?
there is a place in bundoora i believe, turbo engineering, assuming youre still in thomastown, maybe they can suss your turbo out???

Hey mate. The only thing that place is good at engineering, is your bank accounts into negative, very quickly. My pedal was replaced under warranty, and this didn't make any difference, it wasn't worse or better.

[threedogs]

here's one for you ,,,,swap the ECM relay with the Air con relay to eliminate that,
the relay could be failing intermittently, don't forget a poor earth, maybe run some new ones
but swap over those relays and try it.

Turbo Engineering know their stuff, good place to get it Dynoed

[Hodge]

here's one for you ,,,,swap the ECM relay with the Air con relay to eliminate that,
the relay could be failing intermittently, don't forget a poor earth

Turbo Engineering know their stuff, good place to get it Dynoed

Hey TD. Thanks mate. What exactly does that do? Are the relays identical? I'm thinking if it were a relay, wouldn't the ECU cut out completely at some stage, therefore the whole engine would stop? I've checked earths, but will do again.

As for the turbo engineering, you are the first bloke to say a good thing about that joint.

[threedogs]

don't know him and have only heard good from his Dyno work.
I believe the relays are the same for the sake of testing. If it intermittent
it may have symptoms like you describe,
I'm thinking of the easy things first, Yendor suggested this to someone else a while ago now
Its just one less thing to check, only do one thing at a time then you'll know what it is.

[mudski]

I'd rather crush my left nut in a vice than take my car to Turbo engineering... JPC any day of the week...
TD needs to start taking his meds again I think...lol.