No boost at all :(

[JesusTheAgnostic]

Different thread, but no o: Totally left that unplugged. Should I plug it back in? I don't remember unplugging it, you know? But then again I did spend like 2 hours taking off the original intake manifold because I couldn't take it off. Should I plug it back in? I don't think it fits. I'll upload a picture of how it looks connected.

I don't know what it's for.

 

[mja]

MJA. I didnt know you had these issues. Too bad you didnt have time to drive my car Sunday.

Out of town this weekend, if it's still doing it next weekend we can check it out.

 

[JesusTheAgnostic]

Did you guys ever get that resolved? I'm running a different tune so now it doesn't do it anymore, the exhaust pops a lot but it's not as quick as it used to be :/ Though I do love how it pops and crackles. Though this ZZP muffler really muffles it :| So I'm gonna get a muffler delete later on so I can hear it better. It kind of sounds like far away thunder

 

[mja]

Did you guys ever get that resolved? I'm running a different tune so now it doesn't do it anymore, the exhaust pops a lot but it's not as quick as it used to be :/ Though I do love how it pops and crackles. Though this ZZP muffler really muffles it :| So I'm gonna get a muffler delete later on so I can hear it better. It kind of sounds like far away thunder

I forget what all was going wrong with EPYON96R's car. I know there was a MAF issue. Turns out you don't wana clean them with MAF sensor cleaner :/

He's also looking for a better fix for the intake manifold check valve and bypass the bypass mod. When the weather warmed up it seemed to run better, he can give more info tho.

 

[JesusTheAgnostic]

Better fix for the intake manifold? As in what the other guy did?

 

[EPYON96R]

Jesus, at this time I am still underboosting. I my intercooler and tube were damaged so I bought MJAs old set. No leaks from there, still underboost. I then said hey, Ill clean the maf sensor with maf sensor spray. What can go wrong...lol I need a new one now. I am going to get a new intake manifold, but given how I already bypassed the valve on the intake manifold when I did the bypass the bypass mod, I do not think it will make a difference. We shall see.

My next step if that fails is to see if my bypass valve is leaking or possibly the wastegate.

Steven(really nice guy btw) from WOT checked my logs and told me the ECU was demanding plenty of trq, my car just wasn't creating it. I am supposed to get him another log but that was about the time I jacked up my MAF sensor.

 

[Llia]

...I then said hey, Ill clean the maf sensor with maf sensor spray. What can go wrong...lol I need a new one now.

I used MAF spray on my sensor and it was still okay. I was cautious around the paper circle thingy but other than that I sprayed it like all over, in all the holes. Just let it dry for an hour and then disconnect the battery to reset things. Took a bit but my car started to act like it was getting better. I still have other issues though. Do you use an oiled filter?

 

[mja]

Better fix for the intake manifold? As in what the other guy did?

No, we're working on reconfiguring the stock pcv system so common issues are resolved. We want to have our cake and... you know. We'll make a write up hopefully soon.

 

[Llia]

No, we're working on reconfiguring the stock pcv system so common issues are resolved. We want to have our cake and... you know. We'll make a write up hopefully soon.

Great! I'm hoping for a real FIX other than buying a whole new intake manifold because of a tiny valve. That would make life easier.

 

[EPYON96R]

I used MAF spray on my sensor and it was still okay. I was cautious around the paper circle thingy but other than that I sprayed it like all over, in all the holes. Just let it dry for an hour and then disconnect the battery to reset things. Took a bit but my car started to act like it was getting better. I still have other issues though. Do you use an oiled filter?

Ive been using oil filters for a while but the car always idled decently. I didn't even have issues with idle until after I cleaned it.

I did want to clean the other sensors as well because they are covered in oil. But I might wait and see.

 

[JesusTheAgnostic]

Jesus, at this time I am still underboosting. I my intercooler and tube were damaged so I bought MJAs old set. No leaks from there, still underboost. I then said hey, Ill clean the maf sensor with maf sensor spray. What can go wrong...lol I need a new one now. I am going to get a new intake manifold, but given how I already bypassed the valve on the intake manifold when I did the bypass the bypass mod, I do not think it will make a difference. We shall see.

My next step if that fails is to see if my bypass valve is leaking or possibly the wastegate.

Steven(really nice guy btw) from WOT checked my logs and told me the ECU was demanding plenty of trq, my car just wasn't creating it. I am supposed to get him another log but that was about the time I jacked up my MAF sensor.

So you've replaced the charge tubes and intercooler, cleaned the maf sensor, and bypassed the bypass. I know that the orange valve being missing in the intake manifold will not make you underboost. Because I ran my car without it for like a month and it boosted fine. One thing about bypassing the bypass, is that I don't think it had anything to do with the little orange valve, from what I understood the point of it was that it would hold boost instead of releasing it to manage torque. Could you post your log here so I could see if it's similar to what happened to me? Trifecta uses efi files too right?

 

[EPYON96R]

I was under the impression that if the check valve blew, than you would get codes from the bpv solenoid or something. I figured my car didnt do that because because it was bypassed. Hmm

 

[mja]

So EPYON's symptoms were all due to the check (PCV) valve. Once replacing the intake manifold he was golden.

The underboost I'm thinking a little about. No codes, no other odd symptoms. I see GM plumbed the wastegate solenoid directly across the intake pipe from the turbo PCV check valve. When the PCV check valve goes in the intake, I'm thinking this was engineered to somehow limit boost by the wastegate, but I'm not certain. T.here may be other mechanical reasons boost isn't built if excess crank pressure is seen. I know excess blow-by limiting vacuum in the crankcase would directly hamper power on a N/A car, but on a turbo my knowledge is lacking.

 

[JesusTheAgnostic]

So you were missing your little orange valve. The only thing that happens when it's missing is the car runs differently, and you blow blue smoke, and burn oil of course. I'm telling you guys, post up that log up here to see if that underboost was actually an underboost or the car limiting power. If you look at the one's I posted you'll see what I mean.

 

[mja]

So you were missing your little orange valve. The only thing that happens when it's missing is the car runs differently, and you blow blue smoke, and burn oil of course. I'm telling you guys, post up that log up here to see if that underboost was actually an underboost or the car limiting power. If you look at the one's I posted you'll see what I mean.

Sir, the PCV valve going does not allow a pressure differential between manifold and crankcase. This causes a number of problems not simply burning oil or blowing smoke. It causes many issues, one of which the symptoms are blue smoke. The underboost was instantaneously fixed with the intake mani replaced. I do believe there may be a connection with the PCV turbo outlet and the wastegate solenoid tap, unless crankcase pressurizing the cylinders or valvetrain causes unforseen issues with limiting boost on the exhaust side. Again, not a turbo expert... wish I knew exactly.

 

[EPYON96R]

So you were missing your little orange valve. The only thing that happens when it's missing is the car runs differently, and you blow blue smoke, and burn oil of course. I'm telling you guys, post up that log up here to see if that underboost was actually an underboost or the car limiting power. If you look at the one's I posted you'll see what I mean.

I never had blue smoke. Or burnt oil. Did u diagnose for your code?

 

[JesusTheAgnostic]

The only code I ever got after the check valve disappearing was that P0238 code. When I tried to pass the semi. It was a random isolated event which I assume was due to not tightening the intake manifold bolts enough. After I did that I haven't had any more codes. The whole losing power and what I thought was no boost was what Jerry said was likely turbo surge or something like that. Since then he's changed the tune on my car and now it sounds great, but isn't nearly as quick as before. It also hasn't really lost power lately. The only thing that has happened is that the car stalled while not in gear, which it had done while the check valve was missing. I don't know why. But it doesn't happen nearly as often to diagnose it. It just catches me off guard sitting in traffic. Actually it happens while I'm slowing down in traffic and am about to come to a complete stop. It's happened twice, yesterday and I wanna say in September.

 

[Llia]

Dodge Caliber Turbo has a inexpensive normal looking PCV. I might pick one up and see how much effort it would take to connect it in place of the stock one. Need a spare intake manifold as well.

This is an interesting PCV install location.
http://dodgeforum.com/forum/2nd-gen-neon/309892-reinventing-the-neons-pcv-system.html


Here is a Check valve that is supposed to protect the engine. Isn't the PCV valve a check valve too?
https://www.modernperformance.com/p...turbo-upgrades-and-accessories-oil-catch-cans
.
.
.

 

[mja]

Youll need to block off the crank to manifold passage in the manifold and tap/reroute lines. Its not a simple fix.

Edit - if you do this, make sure the block of will reliably hold whatever your boost pressure is so it doesnt shatter through the passage into the crankcase. I'm making a prototype and will make a how-to thread once its all fixed up.

 

[EPYON96R]

Can I just say that I am shocked that I have been riding around for 5 months with this blown pcv valve and did not destroy anything.