Well I've still got the rough idle issue and it's throwing a "system too lean on bank one" code. Thought I had a bad MAF, so I replaced that, nothing. Any ideas?
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10-20-2009
Well I've still got the rough idle issue and it's throwing a "system too lean on bank one" code. Thought I had a bad MAF, so I replaced that, nothing. Any ideas?
10-20-2009
Vacuum leak.
10-20-2009
why do you not have a scanner yet?!
10-20-2009
You're the third one, plus that was my thoughts too. I'll look around tomorrow, the guy helping me tried sealing the s/c gasket without any RTV...maybe that didn't work out?Originally Posted by bluegtp91
10-20-2009
I have a code scanner, but that's about it.
If you mean why do I not have an aeroforce or a tuner, that would be because I am broke.
10-20-2009
something to read LTFT, o2 levels, and other things that you NEED to know with your swap. get on that NOW.
10-20-2009
A friend of mine has an HPtuners, we're gunna plug that in as soon as we have time and scan everything.
10-20-2009
scan tool is a lot cheaper than a new motor
It could also be a bad 02 contributing as well...no way to know unless you are scanning.
10-20-2009
99% sure there's a horrible vac leak somewhere. All symptoms point to vac leak and it's idling at 1k.
Wouldn't an o2 throw a code?
10-20-2009
Has it been doing it since the top swap?
10-20-2009
Did it at first, then we fixed it (or so we thought) and a couple weeks alter it started again but not nearly as bad.
10-20-2009
it is.... its throwing a p0171, the exact code you described
when i got that code it was a vacuum leak. a hole was melted through the intake plenum right above the egr port
10-20-2009
do u still have the maf screen on the tb?
10-20-2009
Did you have a reason to suspect the MAF? I'm referring to your last thread: http://www.grandprixforums.net/f81/w...his-21601.html
Idling over 1K sure points to a vac leak.
10-20-2009
mine threw that same code because it was missing the maf screen. i put 1 in it and its never come back on ever since. the maf wasnt reading correctly.
10-20-2009
Really? No I don't have the screen, but it's been doing fine without if for about half a year now.
10-20-2009
i never ran a screen. there is no need for one so long as you tune it pretty well.
10-20-2009
well i removed my screen and next thing u know i was throwing a code saying running lean bank 1, obviously the air coming in wasnt being read correctly by the maf and it had a rough idle. i put it back in and no probs since. try it out, put 1 in it and c what happens, cant hurt.
10-20-2009
First thing I'd do is toss el screeno back in. Some cars complain and toss codes, some don't. Being that you are getting a code, a screen is an easy thing to try.
Next thing is ....do you still have an EGR tube going to the LIM? They crack pretty easy and you'd have to pull it off the car to check it. Can't tell you guys how many lean banks have been solved by the tube.
10-20-2009
Alright thanks, after I break out the brake cleaner and check for the vac leak that I'm pretty sure is there and fix that, I'll try both those things if the problem isn't solved. Odd that the screen would cause it though, I took that out when I installed my FWI so that was about half a year ago and I've never had a problem.
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