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hi all, my car has just lost nearly all power where it will barely pull away and top speed of 25mph. i have checked fault code which is p0402 egr high flow. does anyone know what this means and how to fix it ? im guessing the egr valve is blocked and needs cleaning, ive looked down the back of...

Well just seen this reply f6had. I saw the one you posted the other day saying the same and I thought I'm pretty sure it's not the egr as I tested it and it was sealing ok. Anyway I had a blanking plate laid around and fitted it earlier, it now revs at standstill so much faster than ever right...

I have tried a different map sensor but it made no difference Sent from my SM-G935F using Tapatalk

The car is not worth spending £200 on, so unless I can get it fixed very cheap it will just be used/abused as is. Sent from my SM-G935F using Tapatalk

Soooo I have tried another vacuum selonoid and it was the same, so am I right in thinking it must be the turbocharger at fault ? When the engine is started the actuator rod on the turbocharger lifts up, if I remove the vacuum hose the actuator rod drops back down, is this correct ? As when I...

More specifically it's the vacuum pipe going to the turbo actuator rod. If I pull the pipe off the car drives great, just not full turbo pressure. I think the turbo solenoid needs replacing. Sent from my SM-G935F using Tapatalk

Well I'm getting somewhere ! If I pull off the two vacuum lines that go to the boost selonoid the car drives much much better under 2000rpm but after that it's a bit flat. Does this point to the selonoid being faulty ? Sent from my SM-G935F using Tapatalk

It feels like the turbo only starts to spool around 2500rpm. Which makes me think it's the vanes stuck in the turbo, but can't understand how the turbo can make the car rev slowly under 2000rpm but then rev normally after that even when stationary. I've basically got to keep the car above...

I can't hear any noise from the turbo at all even when I'm pinned to my seat at 4000rpm. Sent from my SM-G935F using Tapatalk

I will have to check for a blockage, but I can't understand how the blockage would clear after 2000rpm and then the engine is fine and pulls very strong once the turbo kicks in. Sent from my SM-G935F using Tapatalk

I only bought the car a few days ago so I don't know about if it been remapped. I just can't figure out why the revs so sluggish under 2k but then perfect after that. If I drive the car like 2000rpm is 1000rpm and 3000rpm is like 2000rpm then it's almost normal to drive. I could make more sense...

Yes I checked the egr valve with a 12v feed, the large valve looking rod inside very quickly opened when 12v was applied and snapped shut when I took the 12v feed away. I did say this in one of my previous posts. Whatever the fault is it makes my car rev slowly between 1 and 2krpm then after...

If I go ahead and fit the blank plate will the car go straight into limp mode without remapping it immediately? Or can I fit the blank plate and the car will run ok ??? I'm not bothered one bit about a light being on the dashboard, I just need the car running right. Sent from my SM-G935F using...

I have sprayed some intake cleaner into the manifold today with the engine running but it's made no difference. Sent from my SM-G935F using Tapatalk

I have had another look at the car today and noticed the revs are very slow to react between 1k and 2k rpm, after 2k rpm it revs freely , would that be a symptom of a failing egr valve ? I think if it revved properly it would be a lot better. Sent from my SM-G935F using Tapatalk

Where do you fit the egr blanking plate on these ? Is it on the pipe coming out the egr cooler ? Sent from my SM-G935F using Tapatalk

Any got any other clues ? Sent from my SM-G935F using Tapatalk

Once the turbo kicks in the car goes like hell! The only thing I can think is the inlet manifold is very badly blocked, the car has done 188k miles. Sent from my SM-G935F using Tapatalk