Please help me diagnose P1109 Check Engine Light
 

I've been getting this CEL for awhile now. I've searched the boards, and tried everything that seemed to help others with no success.

P1109...

Recently, i've noticed bank 2 seems to run a bit rich during idle sometimes. i've seen it idle at 10.6 pretty consistently. Half the time its between 10-12 during idle, and other times its 14.7. I changed out bank 2's pre cat o2, and the problem still persists.

Please help, any advice you can offer will be much appreciated.

It's usual only the p1109 code, but sometimes it'll also be the p0172/p0175 rich codes.

My setup is a gt700 with HMAF.

Thanks in advance.

I'll consider sending the person who helps me solve the problem some steaks.:):)

Did you check this thread:

https://www.6speedonline.com/forums/...ml#post2031193

There seems to be a bunch of possible sources for those errors...

Start with the easy stuff (cleaning MAF, checking connections, hoses/leaks...in that order)

GL

A

Thanks for the tips Ard,

I check that exact hose today.

I've cleaned the MAF, checked every hose and line i could see.

I dont have the stuff necessary to run a boost leak test, also i'm not quite sure how to do it properly. Anyone got any tips?

PM Markski, He is the "Boost Leak check" master...

I think someone sells a boost leak check kit, although I've seen it made with Home Depot parts too.
GL

Thanks ttboost, i will shoot him a pm. Do you have any more info regarding this kit or how to build one at home depot and use it properly?

rep++ for everyone :)

get a 3"piece of pipe, and a threaded cap. drill and tap a hole for a threaded air fitting. Remove airbox (leave all other piping!) Clamp this PVC fitting into the hose where your airbox normally goes, clamp it down and attach a hose for a few seconds and release, put your finger on the fitting and listen for air leaks. Make sure you regualate your air down to something reasonable 20-30lbs?

See diagram.



http://www.eplabs.net/pub/robert_tester.JPG

make sure you check it at the turbos. up to 30 psi.

Do you know anyone who sells a kit to test for leaks?

Try these. Pretty primitive, but effective.

Looks intimidating, but it's not, I just tested mine today, takes about 10 minutes, if you have one of these tools.

http://cgi.ebay.com/ebaymotors/TURBO...1%7C240%3A1318




http://www.vfaq.com/mods/ICtester.html





http://www.srtforums.com/forums/f25/...s-list-195139/





http://www.mitsubishiforum.com/forum...d.php?p=227471

Thanks for researching this for me. Which setup are you using?

Tony actually has a homemade one I used at the shop today. It's just a piece of 3" pipe with a cap that he threaded a hole in and screwed in an air fitting. We just hook up the shop air line (after we lower the regulator) and pump it up for a second or two, then listen for air leaks, which would be pretty obvious if you had one. ;)

I'm thinking i would need to get the 3" kit on ebay, then instead of using there silicone coupler, i would need to use a reducer to connect the plastic piece with the top of the turbo inlet duct.

I should just make Tony an offer to make me a kit :)

My biggest fear is building a kit, and having it blow up under pressure

All you need to do is make the plastic pipe part. It's $5 worth of home depot parts. Now that I've seen Tony's, I'm gonna make my own.

You just use the factory rubber hose and clamps that connects your airbox to the intake pipe. Just yank your airbox off, leaving the hose and clamps on, stick the pipe you made, into the hose and tighten it up, and apply air.

You're only minimally pressurizing it- the thing won't 'blow', you don't want this under major pressure... remember, 1.5 bar is 21 psi, which is pretty low- I suspect it will just not work or leak if you get it wrong, and you'd need to really work hard to make a mistake...

Besides, you drive a Porsche Turbo...No Fear.

hilarious

A

hilarious

Parts are on there way...

On another note: Don't the intake valves need to be closed to properly test?