Is this misfiring due to spark plugs needing to be replaced?
#1
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Is this misfiring due to spark plugs needing to be replaced?
Hi guys
This is the read out for my car. For my ECU reader.
Replacement exhaust fitted didn't fix the issue. The downpipe was blowing anyway, so it needed doing
This is the read out for my car. For my ECU reader.
Replacement exhaust fitted didn't fix the issue. The downpipe was blowing anyway, so it needed doing
Last edited by acemodder; 07 May 2011 at 08:43 PM.
#6
You can mess around with the exhaust quite a bit on the 02 WRX..........the ECU simple adjusts air /fuel etc. My guess would either be a faulty MAF or Lambda, usually it's the heater circuit on the Lambda so for your P0171 CEL I'd think about swapping the MAF for a known working one, maybe your local scooby crew has a spare lying about he could loan you.
Shaun
Shaun
#7
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If you reset the ecu and leave it ticking over for a while does the light come on? Or is it only under load etc?
Just check there are no pipes disconnected.
Graham
Just check there are no pipes disconnected.
Graham
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The light doesnt come on for a good 100 or so miles, but seems to eventually come on when doing over 80mph.
I only use Shell V-Power Kosta
I know a place near where my dad works that has a working MAF for £30. I will get him to pop there and buy that, for the sake of £30 it may fix the issue.
I only use Shell V-Power Kosta
I know a place near where my dad works that has a working MAF for £30. I will get him to pop there and buy that, for the sake of £30 it may fix the issue.
#10
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At this rate you're changing everything mate! I told you I wasn't convinced it was an exhaust leak causing the 02 sensors to make the car run so badly... right about now I would be booking the car in for a rolling road diagnostics or similar. If you keep changing things you could just be chucking money away and not getting anywhere..
BTW you will get a CEL light from the 02 sensor as you've now decatted. That is for certain, I can't remember that CEL code though, think it's P0420 - cat below threshold or something? So expect that at some point.
BTW you will get a CEL light from the 02 sensor as you've now decatted. That is for certain, I can't remember that CEL code though, think it's P0420 - cat below threshold or something? So expect that at some point.
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Aye, I've just text Duncan @ racedynamics, he should help. My exhaust and plugs needed doing anyway, so that's why I got them done, hoping that they fixed the issue I was having.
My exhaust was blowing, 3 different mechanics told me that anyway. And I found out that at the 60k service everything except the spark plugs were changed, so they needed swapping out anyway.
My exhaust was blowing, 3 different mechanics told me that anyway. And I found out that at the 60k service everything except the spark plugs were changed, so they needed swapping out anyway.
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My car has been running under powered for a few weeks now, I think partly I'm looking for things that make me thing my car is not feeling right. I might get my mate at work to give my car a drive to see if he thinks there is a power issue still. Paranoia can do horrible things to your mind.
#17
Looks like you are heading in the right direction........
http://www.racedynamix.com/
http://www.enginemapper.co.uk/
Shaun
PS just because I have listed them one above the other doesn't mean anything LOL
http://www.racedynamix.com/
http://www.enginemapper.co.uk/
Shaun
PS just because I have listed them one above the other doesn't mean anything LOL
#20
There's an OBD II port (On Board Diagnostics port) under the steering wheel........... looks like an enormous USB port LOL
Shaun
PS Acemodder.........glad you got it sorted |
Shaun
PS Acemodder.........glad you got it sorted |
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