Okay /o/ Need some help here. I own a saab 9-3 se with some questionable

Test your 02 sensors pull them to see if they are fouled or not. Your engine runs off of it when youre going full throttle (open loop mode)

>>15738532
I should mention that leak where the downpipe bolts to the turbo is like a couple inches before the front O2 sensor.

>>15738532
in open loop mode, your PCM ignores the O2 sensors

you have a p0101 code which is related to mass airflow sensor - just because you replaced it and it ran worse doesnt mean the original one is good - you need live data from a scan tools to properly diagnose this. And why would you put anything related to direct injection on without a proper diagnosis - stop guessing and throwing parts at it and take it to someone that can diag the problem

>>15738541
you cant have a leak before the front o2 sensor - that will seriously throw off the pcm - fix that first! do you have some aftermarket pcm or tune? because that should set some codes

>>15738563
Again, with the questionable history, I don't know if it has a tune but I'm going to assume it does, because it's faster than a buddies stock 9-3.

>>15738519
Fix the leak

>>15738563
But i'll go ahead and fix that first before I do anything else.

>>15738555
I was going to replace the DIC because reading some fourms on similar problems, A dieing DIC can cause strange problems like this and not throw any codes

Summoning Snaab.

>>15738603
Dammit 4chan I don't need that trip now.

>>15738587
Don't replace the DIC yet until you start getting miss codes or one of the "sooty spark plugs" codes (P1312/P1314). The leak seems to be your main issue here. The other thing I would check is if the recirc valve was replaced with a generic dump valve of some kind.

In fact, do you have a top-down photo of your engine bay? I want to see if I can perhaps glean something from that.

>>15738623
I don't but give me a couple of minutes and I can get one for ya. I'll take the 2.0 cover off for you aswell.

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>>15738623

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For those who want to see the leak

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>>15738727

>>15738733
its such a small leak you can't even hear it. you wouldn't know it existed unless I told you.

>>15738695
>>15738718
>>15738727
Your efforts are appreciated, shit like this really helps.

Well, it looks like he kept something similar to the stock recirc valve, though it's entirely possible that there's an issue there. Recirc valve issues, however, don't really match your symptoms.

I'd start by doing the following:
1. Fix that exhaust leak, it's probably causing some other problems.
2. Check all your vacuum lines. You can find loads of schematics at various places especially if you go to Saab Central, Saab Link, or Saab World or one of those similar forums. Lots of how-tos on YouTube as well.
3. This is optional, but it's a good idea in general. Replace that recirc valve with an aftermarket metal one. Only reason I haven't done it yet is cost (they can run pretty pricey) but it's worth it for the benefits it provides, especially if you're running a downpipe.

It's also possible that the ECU was never properly reflashed to cope with the downpipe. This is harder to check on if you don't have easy access to someone with the applicable software, though.

>>15738727
fix that shit nigga

>>15738786
I've checked the vacuum lines and replaced them, I actually got rid of the vacuum lines from the 3 way valve on the top right next to the firewall, and put the recirc valve hose directly to the throttle body, since I was told this was okay and those hoses where ALWAYS popping off. It helped throttle response so much it's night and day.

>>15738806
Welp, I guess I know what I'm doing this afternoon. Just figured this wasn't the main problem since it never did it in the past.

>>15738817
Sounds a tad suspect to me, but as long as that air circuit's completed it should be okay. I've got to double check the routing, though, I'm not as familiar with the 9-3's version of the vac routing.

But yeah, as of right now, best thing to do is get on that leak.

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>>15738868
This is actually exactly what I did. yellow and red lines are supposed to be taken out, I actually did this to try and fix the problem but realized its so much better because I'm also not blowing off those hoses every time I hit boost in 2nd.

>>15738906
but why.