mechanicjoe23

So I finally figured out the problem. It was the boost solenoid. I took it off and put power to it to open and close it and sprayed some cleaner thru it but now the car doesn’t feel like a turbo car. I think it’s running waste gate pressure nowz I also took the hose off the gas the T connector to check it for and leaks and it seemed all good.

So I did some reading after the boost leak test and I did it wrong. The PCV hoses should have been blocked off thus explaining why the air was getting into the crankcase out the oil cap. And actually I think I may have narrowed down my problem. I unplugged the boost control solenoid....and drove the car...probably not the best thing to do as you can overboost and cause damage plus that check engine light was on when I did it. But I drove it a couple miles and what do ya know, The hesitation and power surging was all gone and it ran smooth thru the entire rpm range. I do believe my problem is related to this solenoid or possible the hoses that go to it or maybe the waste gate actuator is faulty. Gotta do some more research but it does seem like the wastgate is opening and closing opening and closing every time is hesitates. And you can hear it to

So I still haven’t fixed the problem yet. I put a brand new turbo inlet pipe on (which was a pain to do) . I replaced it because I had taken the old one off to check it but tighten the clamp down to tight and ripped the hose. I have no codes except every now and then the check engine light comes on because off the secondary air pump valves getting stuck. I don’t think those are really related to my hesitation problem though. So tonight I did a boost leak test. It was holding air and I couldn’t hear any leaks or nothing and spayed soapy water everywhere and couldn’t find anything. However I watched a video and a guy said to take the oil cap off when doing a boost leak test as you could blow a can seal. So when I took the oil cap off and tried filling the system with air it wouldn’t hold any! It all was coming out of the oil cap.... this has me kind of scared. But I’m wondering if it could be that the PCV valve is stuck open letting air get into the crankcase out the oil filler tube. If it was piston rings I’d be burning oil which I’m not..

Update. So I replaced that broken part and also put a new fuel pressure regulator in but the problem is still there

It’s actually a HVAC purge valve solenoid. Have it temporarily glued right now while I’m waiting for the new one lol

Touched a vacuum hose today that went to a solenoid on the intake manifold right behind the ac compressor. Right when I touched it the hose came off along with the plastic end. I’m wondering if that plastic end where the hose goes over was hanging on my a little piece and it had a vacuum leak there. The solenoid is supposedly called a cam shaft sensor solenoid valve. Looks exactly like this https://www.google.com/search?q=Subaru+16102AA470&client=safari&hl=en-us&prmd=ismvn&source=lnms&tbm=isch&sa=X&ved=2ahUKEwjpw-DThcrjAhUC0KwKHVeTDAQQ_AUoAXoECAwQAQ&biw=414&bih=622#imgrc=utMtVcBg1yCBxM

Ok I’ll have to get one of those. Also today I had just driven the car and stopped somewhere and when I tried starting it just kept cranking but not firing up. I stopped cranking it and turned the key on and off and tried again but it’s still took a few cranks before it fired up. Another thing to mention is I keep getting the check engine light code for the secondary air pump valve stuck open. P2241. Not sure if that really has anything to do with the starting issue and the hesitation.

I don’t really have a way to check fuel pressure at this moment. And as far as real time data I have a WiFi ObII tool that connects to my phone and I can watch live data like fuel trims and stuff. The fuel trims seem to be normal, ranging from -3 to +5. The O2 sensors are a little weird though. Sensor 1 stays at a constant line pattern and sensor to has a up and down wave but sometimes will flat line randomly.

Hello all.. So I recently just bought a 2009 Legacy Gt with 136,000 miles on it. I bought it knowing it wasn’t running right and thought I could figure out what’s wrong with it but now im stuck. The guy I bought it from supposedly had the head gaskets/timing belt/ and water pump done at 122,000 miles. The problem with it right now is the car hesitated and sputters at WOT around 4000 rpm. First thing I found was it had a cheap Chinese air filter setup on it and the air filter was cracked around where the clamp was so it was sucking in some dirty air and also the position of the MAF sensor wasn’t correct either so it had a P0171 code. I bought a stock air box and cleaned the MAF and that code went away, But the problem of sputtering/hesitation is still there. I’ve taken the turbo Inlet hose off and checked for cracks and check the IC to throttle body hose. All good there so I don’t believe this is a vacuum leak issue. Also intermittently the car will take a longer time to start then normal- 5-7 cranks before it fires. Or if I stop cranking it and turn the key off and let the fuel pump prime up again then it will fire right up. I’m beginning to think it’s a weak fuel pump or fuel pressure regulator. Any help would be appreciated. Thanks