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07-06-2012, 04:52 PM | #3626 |
Scooby Newbie
Member#: 284693
Join Date: Jun 2011
Chapter/Region:
MWSOC
Location: Olathe, KS
Vehicle:1999 Impreza 2.5 RS STM |
Need help diagnosing some stuttering/hesitating issue
Got a 99 RS with an ver 9 ej207. Only engine related mod is a walbro 255. 93 octane. The car seems like it isn't getting the normal power it used to get, and stutters a lot at full throttle and seems like the power slightly fluctuates while just generally cruising at ~40 mph (was running fine yesterday.) Feels like power cuts out randomly. No CEL. Same symptoms with and without a/c running. The only thing maybe out of the ordinary is that it's been hot around here lately (100* F when I just drove it a moment ago). I don't have that air intake trumpet that goes over the radiator (not sure what fits), so maybe the combo of all the hot air isn't helping? FWIW, the engine isn't overheating (running at about the 1/3-2/5 mark on the temp gauge). Kinda stumped--any thoughts?
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Last edited by mark342; 07-06-2012 at 04:59 PM. |
07-06-2012, 05:07 PM | #3627 |
Scooby Specialist
Member#: 86107
Join Date: Apr 2005
Chapter/Region:
E. Canada
Location: 10% REAL FRUIT JUICE
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here goes the new build ! Found this lying around @ Subaru Canada's part depot. 300 $ lol !! Version 9 spec C double crossdrilled nitrided crank wtf I think a fan motor is more expensive |
07-06-2012, 07:02 PM | #3628 |
Scooby Specialist
Member#: 174706
Join Date: Mar 2008
Chapter/Region:
SCIC
Location: Camarillo, California
Vehicle:2008 LGT-B DGM |
Nice find!
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07-07-2012, 04:16 PM | #3629 |
Scooby Specialist
Member#: 315635
Join Date: Apr 2012
Vehicle:04 STi Aspen White |
does running no cats trip a "check engine" light every now and then on the ej207? my car feels to be running great but the engine light keeps coming on and off, now it has came on and stayed for a a day , which is the longest yet.
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07-07-2012, 04:41 PM | #3630 |
Scooby Specialist
Member#: 131272
Join Date: Nov 2006
Chapter/Region:
MWSOC
Location: Mid-MI
Vehicle:2003 WRX Wagon |
It can. Have you pulled the code to confirm what it is?
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07-07-2012, 06:01 PM | #3631 |
Scooby Specialist
Member#: 315635
Join Date: Apr 2012
Vehicle:04 STi Aspen White |
not yet, been waiting to have my buddy plug his reader into it but its such an onn and off thing, hard to catch it with the engine light on while he's around.
do the codes store on the ecu after the CEL is off? |
07-07-2012, 09:42 PM | #3632 |
Scooby Newbie
Member#: 284693
Join Date: Jun 2011
Chapter/Region:
MWSOC
Location: Olathe, KS
Vehicle:1999 Impreza 2.5 RS STM |
Need to get new spark plugs--what are the oem ones? If not oem, what's the most common? No mods other than walbro 255 lph.
I'm seeing NGK BKR7EIX a lot, but not sure if those are oem or not. Thanks |
07-07-2012, 10:11 PM | #3633 | |
Scooby Guru
Member#: 21339
Join Date: Jul 2002
Chapter/Region:
HIIC
Location: Kapolei, HI
Vehicle:2002 LHD STI V7 6MT 12.9@103MPH EJ205 4EAT |
Quote:
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07-08-2012, 05:09 AM | #3634 | ||
Scooby Specialist
Member#: 255716
Join Date: Aug 2010
Chapter/Region:
NWIC
Location: Where the simpsons live.
Vehicle:Itsa bugeye 04, V9 RHD and it makes me smile |
Quote:
Quote:
I learned alot from reading this thread and I appreciate everyones advice/knowledge. |
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07-08-2012, 05:11 AM | #3635 | |
Scooby Specialist
Member#: 255716
Join Date: Aug 2010
Chapter/Region:
NWIC
Location: Where the simpsons live.
Vehicle:Itsa bugeye 04, V9 RHD and it makes me smile |
Quote:
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07-08-2012, 12:25 PM | #3636 |
Scooby Newbie
Member#: 276065
Join Date: Mar 2011
Chapter/Region:
South East
Location: Valdosta, Ga
Vehicle:2002 207 wrb |
I clean it again and it went away as it did the first time. Its took about half an hour begore it came bavk. Ill see how long it last this time. I also still have my mine from my 205. I'm going to swap them if it comes bak again. It hasn't came back since you replaced it?
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07-08-2012, 03:16 PM | #3637 |
Scooby Specialist
Member#: 224785
Join Date: Sep 2009
Chapter/Region:
MWSOC
Location: neenah
Vehicle:2005 wrx-jdm207 i went black... |
dont forget you need a new gasket for it^ or it will leak like crazy and your car will hunt to find its idle
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07-08-2012, 03:17 PM | #3638 |
Scooby Newbie
Member#: 284693
Join Date: Jun 2011
Chapter/Region:
MWSOC
Location: Olathe, KS
Vehicle:1999 Impreza 2.5 RS STM |
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07-08-2012, 03:21 PM | #3639 | |
Scooby Guru
Member#: 21339
Join Date: Jul 2002
Chapter/Region:
HIIC
Location: Kapolei, HI
Vehicle:2002 LHD STI V7 6MT 12.9@103MPH EJ205 4EAT |
Quote:
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07-08-2012, 03:27 PM | #3640 | |
Scooby Specialist
Member#: 287080
Join Date: Jun 2011
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Quote:
NGK 2667 is the same item but some places recognize that part number and not the other. |
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07-08-2012, 04:34 PM | #3641 |
Scooby Newbie
Member#: 284693
Join Date: Jun 2011
Chapter/Region:
MWSOC
Location: Olathe, KS
Vehicle:1999 Impreza 2.5 RS STM |
What should I be running in a stock engine then?
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07-08-2012, 04:37 PM | #3642 | |
Scooby Specialist
Member#: 287080
Join Date: Jun 2011
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Quote:
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07-08-2012, 04:43 PM | #3643 |
Scooby Newbie
Member#: 284693
Join Date: Jun 2011
Chapter/Region:
MWSOC
Location: Olathe, KS
Vehicle:1999 Impreza 2.5 RS STM |
Yep, tuning is no problem. Brother is good with romraider. Guess I'll go ahead and grab a pack of those then.
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07-08-2012, 05:19 PM | #3644 |
Scooby Newbie
Member#: 269361
Join Date: Jan 2011
Chapter/Region:
MWSOC
Location: St. charles, il
Vehicle:2004 xt 03wrx Rallycar |
28 bucks on ebay with free next day shipping when i got my spark plugs should take a look
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07-08-2012, 05:51 PM | #3645 | |
Scooby Specialist
Member#: 255716
Join Date: Aug 2010
Chapter/Region:
NWIC
Location: Where the simpsons live.
Vehicle:Itsa bugeye 04, V9 RHD and it makes me smile |
Quote:
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07-09-2012, 08:21 PM | #3646 |
Scooby Specialist
Member#: 86107
Join Date: Apr 2005
Chapter/Region:
E. Canada
Location: 10% REAL FRUIT JUICE
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anyone know the size of the oil pump a spec C V7 comes with ? Since the crank is different, should I change this ?
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07-10-2012, 08:01 AM | #3647 |
Scooby Newbie
Member#: 276065
Join Date: Mar 2011
Chapter/Region:
South East
Location: Valdosta, Ga
Vehicle:2002 207 wrb |
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07-10-2012, 08:19 AM | #3648 |
Scooby Guru
Member#: 6886
Join Date: May 2001
Chapter/Region:
Tri-State
Vehicle:MY01 EJ207 HTA35r AVCS ON! |
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07-10-2012, 08:56 AM | #3649 |
Scooby Specialist
Member#: 131272
Join Date: Nov 2006
Chapter/Region:
MWSOC
Location: Mid-MI
Vehicle:2003 WRX Wagon |
So I heard from a local tuner that my V7 engine is not much stronger than a standard USDM EJ257. And so now I'm confused because everything I've read says otherwise. Anyone able to shed some light here?
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07-10-2012, 09:58 AM | #3650 |
Scooby Specialist
Member#: 22605
Join Date: Aug 2002
Location: Boca Raton, FL
Vehicle:2002 JDM STI/WRX WRB |
Never go back to that tuner, he has no idea what he is talking about
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