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Hi Scott,Quote:
Originally Posted by LRD414
I am battling to trace potential vacuum leaks, if the vacuum lines are visible and accessible I have checked them, but sooner or later they become difficult to follow. Up until just now I have not inspected the vacuum actuator (rhs inner wall of eng bay), but I have just removed it. Looks okay to me, i put air into one of the side hoses and it comes out of the bottom hose, do I need to test the operation of the solenoid valve?
Thanks.
Hi Eric,Quote:
Originally Posted by Eric SDV6SE
Where is this located pls, could it be the one I have just removed in response to LRD414's query? Its first port of call heading south is the secondary but I think that the hose keeps going to the primary maybe.
Thanks.
One and the same that Scott refers to.
I did some more testing today raising more questions than providing answers.
Wanted to know if I could get the TSOV to operate so I got the missus to rev the motor to 3K, noticed there was no movement of the actuator arm and subsequently no vacuum in the line either. Was wondering how many Rpm's I need to make this work. I have just asked Ferret about this in a previous post of his and hopefully will get a reply in due course.
The other thing, after re-connecting the turbo vacuum solenoid from my previous post took the car out for a quick spin. The turbo boost low came up as usual about 4 times in quick succession and then settled for a while, so I was able to boot it and it seemed to perform nicely. Got home and I was tinkering again and then it dawned on me that I hadn't reconnected the hose at the T piece into the secondary turbo. So hooked that back in, went for another spin, and there was no noticeable difference between the two test runs. So that got me thinking a bit....!
The TSOV or the solenoid that directs the vacuum to it is now my No.1 line of enquiry. I'm thinking of buying a vacuum pump and gauge tomorrow.
Cheers.
I’m not sure with no load on the engine whether the actuator will move when revved at 3000rpm stationary
Yes, I agree....it's a worthy possibility. I could test the theory by doing two test drives, one with vac line attached, one with vac line removed and blocked off, and compare the results.Quote:
Originally Posted by DiscoJeffster
Thank you.
I have seen my TSOV actuator move when revving the engine parked on the driveway. I don’t recall the rpm.
Scott
Today I did some live data on my IID. I selected my 8 options, 2 of which were compressor shut off valve and compressor recirculation valve. Both shown to operate under upper rpm loads on the road.
That appears to be another one I can cross off my list. I did get some MAF and MAF values too, so I'll go looking in that direction to make sure that they correspond to normal values.
Cheers all.
What kg/hr were you seeing?Quote:
Originally Posted by v8sruleok
Hi,Quote:
Originally Posted by justinc
sorry to get this old thread back, but what should normal readings look like?
I do get 0.3 to ~1.2 g/s from the one (secondary) MAF and anywhere between 40 g/s and 140 g/s when driving normally. Above 2500 rpms the secondary MAF sensor shows a higher reading, while the first MAF sensors flow rate declines.
I suppose that is the way it should work, so can i tick the MAF sensors of my list of possible fault sources for my reduced engine power problems?
Cheers,
Matt