Great diagnostic work!! Nice to see someone with this level of professionalism rather than the typical shotgun approach of just replacing parts until the problem goes away. Great video, please keep it up!
Absolutely. I was about to run a new hose from the intake manifold instead of fighting the hose at the valve. Sometimes it is nice when all you have to do is the diag and let someone else do the repair.
That's a creative method, using an injector tester to evaluate any solenoid, ha ha. Worth remembering. There aren't many high level diagnostic videos out there evaluating turbos, well done!
Andrew K thank you. I always like learning new system operations and when I have the time I like to perform more tests than are needed just to see if a test is viable. Have an awesome weekend.
Thanks for video . I changed the tcv on my sons 2005 s40 T5. I wish I can say it was easy but what a pain to get to. I ended up cutting one hose but was able to access tcv from passenger side front wheel well
The valve (TCV or CBV) is closed in standby position (normally closed), blocking boost pressure between the TCV and the waste gate. The valve opens by duty cycle signal from ECU, which opens the wastegate a little bit by bypassing a certain amount of pressure from the turbine. This bypassed pressure is pushing on the wastegate (bellow/spring/piston system) in order to control the turbo boost. If duty cycle is 100% = TCV is shut = wastegate closed = maximum boost to engine. If duty cycle is 0% = TCV is full open = wastegate opens easily = minimum boost to engine. If duty cycle is 50% = TCV is partially open = wastegate slightly open = medium boost to engine.
On my S40 1.6 diesel I am finding I have not got enough power when I pull off and I have an engine check light and another light switch is because of the anti traction control as well has triggered and I was looking another video where to go Will had a thing raped up checking how much power was coming out of the turbo when it was broken like he said he replied that with a second-hand fixin and it worked
my Volvo S40 1.6 diesel 2006 is in limp mode but only slightly it's driving very well but but every now and then the hazard light for the anti skid turns off and then the turbo kicks in and you can actually hear that whistle is that whistle because too much pressure
Hey i am currently having the same issue kinda. The cel just came on today. I got low end power but like your s40 it loses power after 3k rpm. Do you hear the waste gate open on yours? On mine I hear the turbo pretty good. I thought maybe my fuel pressure sensor was failing because doing 50 or 60 down the road I get a misfire and sometimes it just cuts out all together for a second and pick back up. Mine is completely stock other then the factory airbox was removed. I wonder if I am having the same issue. I would like to hear back from you. 2006 s40 t5 with 170k miles.
My Volvo has a limp mode light on in the on the dash but it's still fairly quick, but when I'm driving if I turn the key off and back on it will increase and make a whistling noise from the turbo and the car starts giving more power than I think it's supposed to because it never seem to stop is that the fuel control sensor valve
Hello from Botswana,my Volvo s40 2.0diesel lost power it goes only upto 100km/h what could be the problem I changed the turbo control valve but still it does the same thing
Great diagnostic work!! Nice to see someone with this level of professionalism rather than the typical shotgun approach of just replacing parts until the problem goes away.
Great video, please keep it up!
I love finding the problem, it's so rewarding. When it's time to fix the problem we'll that's a different story.
Absolutely. I was about to run a new hose from the intake manifold instead of fighting the hose at the valve. Sometimes it is nice when all you have to do is the diag and let someone else do the repair.
That's a creative method, using an injector tester to evaluate any solenoid, ha ha. Worth remembering. There aren't many high level diagnostic videos out there evaluating turbos, well done!
Always interesting and informative. You have a pleasant presentation style. The diagnostic thought process is everything. Thank you for sharing.
Andrew K thank you. I always like learning new system operations and when I have the time I like to perform more tests than are needed just to see if a test is viable.
Have an awesome weekend.
I really enjoy your videos your teaching is awesome thanks for sharing
No problem. Thanks for watching.
Great video as always Chad . I like the use of the injector test to look at the solenoid. 👍🏻✌🏼
Thank you so much for the vid! I learned a ton about this system!
Thanks for video . I changed the tcv on my sons 2005 s40 T5. I wish I can say it was easy but what a pain to get to. I ended up cutting one hose but was able to access tcv from passenger side front wheel well
Nice work Chad, I like the use of the injector pulse tool on other type of solenoid’s. Keep it up
Thanks Cody. Its a super easy way to confirm solenoid operation. I'm looking at getting a new PWM generator for more control.
ThePracticalMechanic let me know when you get a new one, curious what one you end up buying since I’m looking for a new one as well
Put the order in today. I will post up a video once I get it.
Great video yet again my friend.
Well done sir.
Love it....
Buckle up Valerie is watching. 😂
You 2 are awesome.
Thank you Michael. Last thing I need is proof that I don’t always wear a seatbelt. 🤣🤣
The valve (TCV or CBV) is closed in standby position (normally closed), blocking boost pressure between the TCV and the waste gate. The valve opens by duty cycle signal from ECU, which opens the wastegate a little bit by bypassing a certain amount of pressure from the turbine. This bypassed pressure is pushing on the wastegate (bellow/spring/piston system) in order to control the turbo boost.
If duty cycle is 100% = TCV is shut = wastegate closed = maximum boost to engine.
If duty cycle is 0% = TCV is full open = wastegate opens easily = minimum boost to engine.
If duty cycle is 50% = TCV is partially open = wastegate slightly open = medium boost to engine.
Great video Chad. Thanks for sharing! 👍
On my S40 1.6 diesel I am finding I have not got enough power when I pull off and I have an engine check light and another light switch is because of the anti traction control as well has triggered and I was looking another video where to go Will had a thing raped up checking how much power was coming out of the turbo when it was broken like he said he replied that with a second-hand fixin and it worked
my Volvo S40 1.6 diesel 2006 is in limp mode but only slightly it's driving very well but but every now and then the hazard light for the anti skid turns off and then the turbo kicks in and you can actually hear that whistle is that whistle because too much pressure
Hey i am currently having the same issue kinda. The cel just came on today. I got low end power but like your s40 it loses power after 3k rpm. Do you hear the waste gate open on yours? On mine I hear the turbo pretty good. I thought maybe my fuel pressure sensor was failing because doing 50 or 60 down the road I get a misfire and sometimes it just cuts out all together for a second and pick back up. Mine is completely stock other then the factory airbox was removed. I wonder if I am having the same issue. I would like to hear back from you. 2006 s40 t5 with 170k miles.
My Volvo has a limp mode light on in the on the dash but it's still fairly quick, but when I'm driving if I turn the key off and back on it will increase and make a whistling noise from the turbo and the car starts giving more power than I think it's supposed to because it never seem to stop is that the fuel control sensor valve
HI,for 640C is same kind for fix the car?
Hello from Botswana,my Volvo s40 2.0diesel lost power it goes only upto 100km/h what could be the problem I changed the turbo control valve but still it does the same thing
Hi i got similar problem with my volvo, did you resolve the problem?
ECM 640C?