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Old 09-03-2007, 11:41 PM   #1
Ironmansixx
Scooby Newbie
 
Member#: 117003
Join Date: Jun 2006
Chapter/Region: MWSOC
Location: louisville, Ky
Vehicle:
02 Bugeye
WRB

Unhappy Confused???

First off I've done a search and found some answers but I'm still not sure of the problem!

I have a 2.5 hybrid crawford s2, fpgreen, 820cc inj, blitz fmic and spt intake, bellmouth dp, uppipe both catless, vishnu xede, it has been pro tuned, and all other supporting mods.

Today I was merging onto the interstate in 3rd gear in WOT, and at about 1.5bar my car felt as if it was hesitating, (i know what boost creep does and this didnt feel like it) the car didnt hit fuel cut, It felt like it was trying to boost correctly but no rapid acceleration. The check engine light started blinking and then went off! I checked for boost leaks and loose vacume lines, could't find any. I am at a total loss and very upset! It didn't do this yesterday and under normal acceleration the car acts fine! If anyone could give me some insight this would be great thanks in advance!
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Old 09-04-2007, 12:02 AM   #2
reddevil
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Member#: 64673
Join Date: Jun 2004
Chapter/Region: NWIC
Location: portland
Vehicle:
1990 Legacy wagon
goes 12.387 @ 116.5

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edit, wrong thinking on my part

Last edited by reddevil; 09-04-2007 at 11:33 AM.
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Old 09-04-2007, 12:18 PM   #3
mick_the_ginge
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Member#: 27646
Join Date: Oct 2002
Chapter/Region: NWIC
Location: Portland, Oregon
Vehicle:
2003 Sleeved 2.5
Oil Dry Sump Goodness

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Quick flashes of the CEL are misfire. Pull the plugs, replace them with ones that are gapped down to 0.026-0.028"
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Old 09-04-2007, 01:46 PM   #4
Ironmansixx
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Member#: 117003
Join Date: Jun 2006
Chapter/Region: MWSOC
Location: louisville, Ky
Vehicle:
02 Bugeye
WRB

Default

Thanks for the helpful hints

quick update I went and had the codes pulled and It came up
Po244 wastegate
po102 maf to low
po301 cylinder 1 misfire!

So to me it sounds like I have a leak somewhere, getting unmetered air from somewhere, now to just find it! does this sound about right to you guys after the new info?? thanks again for the help!
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Old 09-04-2007, 01:47 PM   #5
Ironmansixx
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Join Date: Jun 2006
Chapter/Region: MWSOC
Location: louisville, Ky
Vehicle:
02 Bugeye
WRB

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Quote:
Originally Posted by reddevil View Post
edit, wrong thinking on my part
Thank goodness I lost alittle sleep last night thinking that my motor was gone!!!

Last edited by Ironmansixx; 09-04-2007 at 01:59 PM.
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Old 09-04-2007, 03:48 PM   #6
mick_the_ginge
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2003 Sleeved 2.5
Oil Dry Sump Goodness

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Po244 wastegate <- Means you overboosted

po102 maf to low <- MAF installed backwards? Or covered in oil? Or faulty? Or huge leak post MAF sensor

po301 cylinder 1 misfire! <- Would have flashed the CEL when it happened
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Old 09-04-2007, 10:32 PM   #7
Ironmansixx
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Join Date: Jun 2006
Chapter/Region: MWSOC
Location: louisville, Ky
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02 Bugeye
WRB

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The Maf is installed correctly and i took it out and cleaned it! if it was bad wouldnt it do this through the whole powerband not just at WOT??
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Old 09-06-2007, 05:05 PM   #8
R & H Garage
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Location: Seattle, WA (Green Lake)
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sounds like plugs are getting munged up and/or aren't gapped properly.

MAF could have issues too.. it's a weird code to have. Low voltage... hmmm...

and of course the worst case could be something mechanical. How does the car idle and cruise now after the problem arose?
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Old 09-06-2007, 11:08 PM   #9
Ironmansixx
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Member#: 117003
Join Date: Jun 2006
Chapter/Region: MWSOC
Location: louisville, Ky
Vehicle:
02 Bugeye
WRB

Default

The car drives fine as long as I dont hit WOT full boost! I do believe that I found the problem in that I am still using the factory intake tube. I have recently read on here that they have problems with melting and getting holes in them. I have ordered a silicone inlet tube and hopefully that will fix the problem. (my therory is that if it has a hole post maf It might stay sealed until the vacume pressure from WOT opens the hole and I get unmetered air.) I have not driven the car since the problem arose. The spark plugs will be checkd and gapped correcly at the time of the inlet tube install.
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