Here is a picture that I spent time* and effort* doing a while ago.
Ignore the green line - it isn't on a 2.0Hdi - so you need to split the feeds from the vac pump - send the main one to the servo ( the one without the pin hole restrictor ) and the other to the turbo solenoid.
In this case I have used a red pipe to the servo, and a blue pipe to the turbo - for illustration purposes...
2003 2.2hdi estate - mine 1998 Volvo 940 auto estate - also mine 2019 Citroen C3 something - the wife's PP2000 user, can help with faults / diagnostics in the Bournemouth area.
If you look at the brake servo, underneath the brake fluid reservoir you will see a plastic connector t-piece with a few vacuum lines coming from it. At the moment one of these lines goes straight to your turbo, and the other one will go to one of your other EV's. Block one of the two nipples off as per the diagram, and direct the other one to the input of the turbo EV (left one). Connect the output vacuum line from the EV to your turbo (already one end has been done) and ensure you have no leaks. You will have some extra pipe left over that is no longer used, keep this safe in case you ever need to return it to its original configuration.
Hope that helps!
Best Regards,
Ben.
Hi Ben, clearly understood. I did the configuration and ran the car for few kilometers, Now I feel the car runs better than before. Thank you for your time and effort to sort this out. with this setup can I drive the car in high rpm (more than 3000rpm)? before this setup when I rev the engine over 3000rpm (not smoothly through gas pedal, but from the TPS under the hood) , black smoke came from exhaust. Still didn't check with this setup. Is it due to soot build up in exhaust systom?
GingerMagic wrote:Here is a picture that I spent time* and effort* doing a while ago.
Ignore the green line - it isn't on a 2.0Hdi - so you need to split the feeds from the vac pump - send the main one to the servo ( the one without the pin hole restrictor ) and the other to the turbo solenoid.
In this case I have used a red pipe to the servo, and a blue pipe to the turbo - for illustration purposes...
Hi GingerMagic, highly appreciate your time and effort on this. Is it the same configuration which Ben has illustrated?
Ben's description was spot on, I just added mine for extra information and details
2003 2.2hdi estate - mine 1998 Volvo 940 auto estate - also mine 2019 Citroen C3 something - the wife's PP2000 user, can help with faults / diagnostics in the Bournemouth area.
Glad it made a difference for you Tila, just make sure to check over the next few drives for vacuum leaks etc, rev the engine with the bonnet open and listen for any hissing/funny noises. My last piece of advice will be to get a tin of BG244 fuel system cleaner and add it to a full tank. It is the best treatment I have ever used -- as good as a Terraclean in my opinion -- and will get rid of the built up soot and grime in the injectors, cylinder and exhaust system. Make sure to do some hard pulls from 1500rpm to 4500rpm in first, second and third gear and once the tank is empty, finally do an oil change. Should feel like a different car after that!
Also Kelv it's worth noting on the 110, the t-piece is on the servo itself, not on the vacuum pump connector, unlike the 2.2. That's the only difference between the diagrams.
Okay, I didn't realise.
So is it a single branch off the vac pump? If so then just swap them over - single on the servo and the T piece on the pump
2003 2.2hdi estate - mine 1998 Volvo 940 auto estate - also mine 2019 Citroen C3 something - the wife's PP2000 user, can help with faults / diagnostics in the Bournemouth area.
GingerMagic wrote:Okay, I didn't realise.
So is it a single branch off the vac pump? If so then just swap them over - single on the servo and the T piece on the pump
Yup, just a single quick release connector on the vac pump!
Tila, one thing I'd like to bring to your attention -- the previous owner must have played around with the standard vacuum layout for a reason. Perhaps the turbo EV was not working correctly, I would suggest when you get time swapping it over with one of the other (now unused) ones to check it is working properly. That way you know for sure if it's functioning as intended.
GingerMagic wrote:Okay, I didn't realise.
So is it a single branch off the vac pump? If so then just swap them over - single on the servo and the T piece on the pump
Yup, just a single quick release connector on the vac pump!
Tila, one thing I'd like to bring to your attention -- the previous owner must have played around with the standard vacuum layout for a reason. Perhaps the turbo EV was not working correctly, I would suggest when you get time swapping it over with one of the other (now unused) ones to check it is working properly. That way you know for sure if it's functioning as intended.
Hi Ben,
Thank for the prompt reply. I removed turbo and EGR EVs and connected to a 12v power supply to check whether its working, only EGR EV had a little click sound, so I thought its working and swapped the Turbo EV with EGR EV. I think its working as intended. I noticed a hissing for 2-3 minutes from turbo EV after the engine shutdown. I put my finger on Turbo Ev's filter area(the nozzle in bottom), I felt the vacuum from it and the hissing through the EV. Also this hissing goes when I put the brake pedal down for few times. Is it normal vacuum coming from Turbo Ev's feed IN hose for few minutes after shutting-down the engine?
A lot of people have reported a hissing noise for a few minutes after shutdown. It happens on my car too, I believe it's the rush of air entering the vacuum system to equalise pressure on shutdown, but don't quote me on that! You will not hear anything really when running 12V through the EV as they work on pulse-width modulation (this is what the duty cycle refers to in PP2000). Essentially the amount of vacuum it lets through is dictated by how long the 12v pulses are that are sent through the EV, you won't be able to replicate this with a simple 12V supply without some more specialist equipment.
This is how it works:
With regards to the brakes, I'm not sure what's happening there. As long as there is always enough assistance under braking I wouldn't be concerned about it -- do keep an eye on it though.
fattail95 wrote:A lot of people have reported a hissing noise for a few minutes after shutdown. It happens on my car too, I believe it's the rush of air entering the vacuum system to equalise pressure on shutdown, but don't quote me on that! You will not hear anything really when running 12V through the EV as they work on pulse-width modulation (this is what the duty cycle refers to in PP2000). Essentially the amount of vacuum it lets through is dictated by how long the 12v pulses are that are sent through the EV, you won't be able to replicate this with a simple 12V supply without some more specialist equipment.
This is how it works:
With regards to the brakes, I'm not sure what's happening there. As long as there is always enough assistance under braking I wouldn't be concerned about it -- do keep an eye on it though.
Best Regards,
Ben.
Hi Ben,
I was worrying about the hissing and now think it should be normal, I misunderstood just plugging into 12V something should be happened, it may not be a click sound from inside the EV but the spark sound I heard when connecting wire to power. Thanks for sharing knowledge on that. So far I feel car runs better and I am very much satisfied and would do the BG244 treatment on my next long journey.
