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Old 03-01-2008, 08:19 PM   #1
ctrent86
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Join Date: Oct 2006
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Location: Jax Beach, FL
Default Help car running horrible

To give the back story. Thursday night (2 days ago) I flash stage one in my wrx mainly just to learn the flash process because I am about to go stage two. Anyways, So today (saturday) I was driving home from school. I was almost to my house when at a redlight the car started rocking almost like a muscle car it is bogging down like it is going to stall etc. I look down and the check engine light starts to flash(never had done this before). I limp home (one block away) and read that this means I am misfiring in a cyclider.

I think well I will just go back to my saved stock map. I flash the old map. Start it up and it is still running crappy. I can hear it knocking and it seems like it is struggling. So I then reset the ecu but disconnecting the neg terminal and pressing the brake petal. Waited 10 minutes reflashed to stock again no luck. It is weird I would think that if it was a map problem it would have arisen early put on at least 200 since flash. I did a log which I can email to someone if they can look at it.
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Old 03-01-2008, 10:28 PM   #2
bcblues
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04 STi
Blue w/ custom bug splat

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Maybe post some of the log here and see what everybody thinks. Did the flash complete successfully?
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Old 03-01-2008, 10:29 PM   #3
rkramer
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2015 WRX Limitec

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Did you log immediately after flashing stage 1? Just speculation, but lets say the stage 1 for your car was a little too lean. It had enough detonation to kill a bearing and you might not have been able to hear it. so now, you have 1 dead bearing (aka new shortblock), which seems to possibly be accurate since you said it is knocking even on the stock map. (I'm assuming you mean making a bad noise at idle, not knocking as in detonation.)
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Old 03-01-2008, 11:32 PM   #4
Nuke209
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2003 WRX
NF Performance

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check for leaks.

my car felt like POOP when the intercooler popped off.
pulled over, reconnected it and was fine afterwards.
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Old 03-02-2008, 12:39 AM   #5
bcblues
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You could just have a fouled plug.....

It sound to me like a dead cylinder. What is causing it could be anything from a bad plug, a bad coil, or a holed piston (assuming a broken rod would not run). I have had my inlet hose pop off the turbo several time, and it only affects the car under boost (at least to a noticeable level).
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Old 03-02-2008, 12:43 AM   #6
bcblues
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You could log a bit (Enginuity), even just at idle and see if "Roughness Monitor" for any particular cyl indicates a bad cyl....
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Old 03-02-2008, 01:20 AM   #7
ctrent86
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The flash went fine. In fact, I didnt flash it. It was a local tuner here that had a lot of experience. He was teaching me how to flash so I could do stage 2 on my own later on. I did log after the flash. This was a really standard map nothing crazy. My speculation is a fouled plug, coil. I dont think that it is map related because I think the problem would have surfaced before now. Plus, the problem happened after driving some 200-300 miles on new map. Lastly, it happened after I was driving for like 30 minutes and happened while I was at a stop light not during flashing etc. I am by no means an expert just my .02 cents. If someone wants to take a look at the logs then just pm me and I will email them. That would be much appreciated.
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