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Old 03-03-2012, 11:56 PM   #26
OUScooby
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put the car back together today. I put on Jimmy's GD sti intercooler on in place of my 08 sti intercooler and did another leak test, didn't find anything, but I still can't get the car to run. It starts but stalls out immediately and now its throwing code p0103 maf sensor high input.
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Old 03-04-2012, 03:17 AM   #27
jhenry1983
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Ug I hate my timing belt covers. So all the bolts on both the left and right side timing belt covers were spining freely =[. The entire middle cover section that bolts to the block was perfect came out without any force at all. Now I have to finish dremeling off the head of the bolts and figure some way to make the covers stay on no problem, or get the bolts out somehow and gorilla glue the nut that spins in the covers so I can actually take the covers off no problem.

But I found my problem with the "knocking , clunking sound " It was the lower single bearing idler near the pass. side lower cam gear (orange). I dont even have the belt off yet but i just tapped a few of the idlers they didnt make any sound until I just touched that idler and it made a bad sound. So at least I know Im fixing the problem. Oh and the cam gear seals are perfect which made me happy!!

timing belt ill probably be finished tomorrow or monday.
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Old 03-04-2012, 03:20 AM   #28
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Quote:
Originally Posted by OUScooby View Post
put the car back together today. I put on Jimmy's GD sti intercooler on in place of my 08 sti intercooler and did another leak test, didn't find anything, but I still can't get the car to run. It starts but stalls out immediately and now its throwing code p0103 maf sensor high input.

Did a quick search ( you probably did the same ) All I can find is that either your maf is max'd out and you should run a gm 3 bar / its to cold and somehow its ****ing up your maf / your maf is ****ed up and you should replace it or clean it.

Numerous people had the same problem but most had water that got into the air filter , or it was slightly off making a weird leak. A select few had a bad main ground the one grounded to the dash bar I believe someone tapped into it when they installed utec or something with the ECU
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Old 03-04-2012, 02:25 PM   #29
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Unplug the maf and see if it starts. maf is about $100. I think I have a well used spare, somewhere.
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Old 03-04-2012, 04:03 PM   #30
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what do you think? Should I go wide body?

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Old 03-04-2012, 10:08 PM   #31
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So I borrowed Jimmy's MAF and put it on my car, this solved the p0103 (maf sensor input too high). At this point it would be easy to assume that a bad maf was causing the p0172 (system too rich) code, but my a/f correction are still all over the place. This time maxing out at both ends of the spectrum, +25 & -25. Below is a link to a log, it's not a pull as I'm reluctant to take the car WOT, it's just a drive up the freeway and back home on surface streets. Also below that is an LV.

https://docs.google.com/spreadsheet/...HU5MlozU29MY3c

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Old 03-04-2012, 11:08 PM   #32
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If it is maxing out correction the CEL for system too rich will come right back. It doesn't surprise me that you didn't find any leaks. If you had a post MAF leak the car would lean out. If it was post compressor then it would lean out in vac and go rich under boost. There isn't too many things that would cause the car to go rich like that. My guess is stuck injector, tuned with a post MAF precompressor leak and it's now closed, dirty MAF(ruled that out already). I would see if steve can look at the map to check MAF scaling(might be able to see if it was tuned with a leak). You, Steve and I all have the same intake.
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Old 03-05-2012, 08:26 PM   #33
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So my timing belt covers are finally off with the help of a dremel ( since the ones in plastic were free spinning ) . I finally got a chance to see what was going wrong making the sound and I found a bad idler , the single bearing one which is good I found it. Now after finding that I looked at the belt because I saw small gouges out of the belt in certain spots. Upon checking my cam gears I found something pretty disturbing.

Notice how bad the edge is chipped and a possible crack in the middle.

this is what its supposed to look like:
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Old 03-05-2012, 09:42 PM   #34
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Looks like you changed it just in time.
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Old 03-05-2012, 11:41 PM   #35
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yeah I got lucky
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Old 03-07-2012, 02:53 AM   #36
OUScooby
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So after two days of driving the car my learning views are starting to look better:



I still not sure about what I'm seeing in the logs. My a/f corrections are going from -25 to +25. Car seems to drive fine though. I've ordered a new MAF which should arrive in a few day.
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Old 03-07-2012, 06:32 PM   #37
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that looks a lot better than your previous table.
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Old 03-09-2012, 02:03 PM   #38
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Quote:
Originally Posted by 181stLeader View Post
Some shots of yesterdays AutoX:



More ppl from the meet should come out to these they are tons of fun!
I saw you guys there that Sunday! I ran earlier in SK2 & had to bail out early to go to work ...
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Old 03-09-2012, 03:15 PM   #39
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Quote:
Originally Posted by OUScooby View Post
So after two days of driving the car my learning views are starting to look better:

Learning View image

I still not sure about what I'm seeing in the logs. My a/f corrections are going from -25 to +25. Car seems to drive fine though. I've ordered a new MAF which should arrive in a few day.
Quick question. When you say A/F correction, are you talking about the A/F correction #1 parameter only? If so (and I think that's the case!) that's normal. A/F correction will swing all over the place very rapidly to keep the car running at 14.7 AFR and you'll normally see min/max values of -25/+25 in RomRaider. As long as you're seeing minimal correction changes when the car is idling or driving steady state it should be fine. If it's swinging all over the place at idle (like more than -10/+10) then I'd be concerned something was still wrong. Your learning values look pretty good - those were all over the place when we were looking at it before and it looks much more stable now.

I'm a little weirded out about the MAF being the cause though, because we switched it that one night a couple weeks ago and the car was doing the same thing with a different sensor. Whose MAF sensor was that anyway? Jimmy's L one? I'm wondering if the connector on the harness side is bad and wasn't mating up well or something, but I'd expect a MAF low input code unless it was shorting out or something crazy. I'm just speculating at this point though

If you want I'd be happy to take a look at it again tonight, see what we can find.

Edit: I just looked at the previous log you posted and that one still seems bad. Your A/F Correction #1 is pinned to -25% most of the time and your AFR is a little rich still. I'm hoping that because you're seeing both -25 and +25 now that it's just swinging around normally but sticking close to 0 most of the time. If you have a more recent log I'll take a look.

-Steve
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Old 03-09-2012, 08:53 PM   #40
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bilsteins should be here mondaywhos going toneet
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Old 03-09-2012, 09:13 PM   #41
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Quote:
Originally Posted by 7L Autosport

Quick question. When you say A/F correction, are you talking about the A/F correction #1 parameter only? If so (and I think that's the case!) that's normal. A/F correction will swing all over the place very rapidly to keep the car running at 14.7 AFR and you'll normally see min/max values of -25/+25 in RomRaider. As long as you're seeing minimal correction changes when the car is idling or driving steady state it should be fine. If it's swinging all over the place at idle (like more than -10/+10) then I'd be concerned something was still wrong. Your learning values look pretty good - those were all over the place when we were looking at it before and it looks much more stable now.

I'm a little weirded out about the MAF being the cause though, because we switched it that one night a couple weeks ago and the car was doing the same thing with a different sensor. Whose MAF sensor was that anyway? Jimmy's L one? I'm wondering if the connector on the harness side is bad and wasn't mating up well or something, but I'd expect a MAF low input code unless it was shorting out or something crazy. I'm just speculating at this point though

If you want I'd be happy to take a look at it again tonight, see what we can find.

Edit: I just looked at the previous log you posted and that one still seems bad. Your A/F Correction #1 is pinned to -25% most of the time and your AFR is a little rich still. I'm hoping that because you're seeing both -25 and +25 now that it's just swinging around normally but sticking close to 0 most of the time. If you have a more recent log I'll take a look.

-Steve
Thanks Steve, I don't have any other logs, but I'll bring it too the meet tonight. I also have a smaller intercooler on the car than the one it was tuned with. Could this be the reason for the slightly rich afr, since there is less intake volume? I also don't know how much it throws off the other numbers as well.
It's weird that swapping the mafs that one meet didn't fix anything. Maybe whoever's maf that was is going bad too.
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Old 03-09-2012, 10:14 PM   #42
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IC volume shouldn't make a difference. The only thing that will really change the MAF is pre-MAF piping and stuff a little bit after the MAF due to fluid dynamics. This is assuming there are no boost or vacuum leaks anywhere of course, but I think you've confirmed that for yourself already

The main thing that was weird was the huge swing of A/F correction and actual AFR we were seeing that night, so if that's gone it'll be easier to rule the problem as a bad MAF. Thing is, if the MAF signal was bad when Paul tuned it, there's no way the scaling will be correct anymore, similar to having a leak when tuning it and then fixing the leak after. I'll know more once I look at it tonight but assuming that's what happened you'll just need to get the MAF rescaled and it should be all set.

See you and everybody else later tonight!

-Steve
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Old 03-10-2012, 12:14 AM   #43
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They were both my mafs
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Old 03-10-2012, 05:51 PM   #44
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If you get them installed before the 18th you should come out to the autox and test em out. So far its: Me, Chris, Justin, Jimmy, and Matt who are going. It's al el toro this time so they should be a longer course. It will be my first time running at el toro so I can wait.

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bilsteins should be here mondaywhos going toneet
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Old 03-10-2012, 09:01 PM   #45
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Originally Posted by 181stLeader View Post
If you get them installed before the 18th you should come out to the autox and test em out. So far its: Me, Chris, Justin, Jimmy, and Matt who are going. It's al el toro this time so they should be a longer course. It will be my first time running at el toro so I can wait.
ok then
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Old 03-12-2012, 11:19 PM   #46
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So rain is forecast for the auto-x on Sunday. I was going to bring out The L if it does rain, and crush all you high horsepower JDM swapped fools on Star-Specs with my wimpy 2.2L on all weather Pirellis.
Fortunately for you guys, it looks like I'm going to be working on Sunday.

They are calling us into work on Sunday and then the following Saturday. That will make Friday a 6th day (8 hrs of time and a half and 4 hours of double time) and make Saturday a 7th day (8 hours at double time). That kinda of paycheck is too much to pass up, even for Auto-X's return to El Toro.

Still I encourage more of you guys to sign up and get your Subie out there to see what they can really do. Why put all this time and money into your car to make it faster and not do anything with it.

Have fun without me.
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Old 03-12-2012, 11:46 PM   #47
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So rain is forecast for the auto-x on Sunday. I was going to bring out The L if it does rain, and crush all you high horsepower JDM swapped fools on Star-Specs with my wimpy 2.2L on all weather Pirellis.
Fortunately for you guys, it looks like I'm going to be working on Sunday.

They are calling us into work on Sunday and then the following Saturday. That will make Friday a 6th day (8 hrs of time and a half and 4 hours of double time) and make Saturday a 7th day (8 hours at double time). That kinda of paycheck is too much to pass up, even for Auto-X's return to El Toro.

Still I encourage more of you guys to sign up and get your Subie out there to see what they can really do. Why put all this time and money into your car to make it faster and not do anything with it.

Have fun without me.
party foul.
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Old 03-13-2012, 12:06 AM   #48
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I am going to attempt all wheel drifts on every corner!!!! Subies should do well in the rain. Next month is el toro also
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Old 03-13-2012, 01:25 AM   #49
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Yeah Justin, that is too good a a check to pass up. More parts for the car

Star specs should do ok in the rain. Better than most of the other ultra high performance summer tires like RS3 or kumho XS's. Either way it should be fun!
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Old 03-13-2012, 01:41 AM   #50
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18th... I'll see if I can make it.
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