lambda issue maybe
Will a failing lambda always give fault code as i have a cold runnning issue and my mapper thinks it could be lambda taking time to heat up
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Bump for info
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Hi there
Not always failed lambda will give you error/CEL,but this depends on the ECU,assume are you on stock OE ECU or are you on AlcaTek ? One way how to check is with multimeter or to borrow good Lambda sensor Thanks,Jura |
Yes on oe ecu and my jdm twinscroll lambda is different from single scroll i think will try testing with multimeter
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Jura would maf cause same issue as i cleaned it on wednesday and car seems better today
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Hi there
I would say,yes MAF can cause poor running,but cold starting can be the Lambda or Coolant Temperature Sensor can cause this too Thanks,Jura |
Cheers jura car starts first turn of they key just splutters when driving till it heats up
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Originally Posted by peter zippy reid
(Post 11604700)
Cheers jura car starts first turn of they key just splutters when driving till it heats up
I would suspect then Lambda or Coolant Temp Sensor,those two things can cause those things Do you have Torque app if yes then monitor Coolant temperature and Lambda hardly you can monitor via OBD as they don't read as wideband Thanks,Jura |
Will use ssm to monitor as torque wont allow anything but code check/erase on jdm car for some reason
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Originally Posted by peter zippy reid
(Post 11604706)
Will use ssm to monitor as torque wont allow anything but code check/erase on jdm car for some reason
Thanks,Jura |
Torque Worked fine on my uk sti but i dont think jdm ecu allows enough access
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Originally Posted by peter zippy reid
(Post 11604741)
Torque Worked fine on my uk sti but i dont think jdm ecu allows enough access
Thanks,Jura |
Ok so car is still stuttering when i drive from cold took lambda out is it supposed to be this colour
http://i939.photobucket.com/albums/a...215-WA0000.jpg |
looks rich
peter, you want me to put the psi3 monitor on it to reset and read codes and check to see what the ecu is seeing in real time |
Where abouts are you neil
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I have ssm software but it doesnt read front lambda
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the front lambda is the wideband , i would say the front lambda is gubbed
i would confirm it using another monitor |
glasgow peter
terzo neil from other site here |
Thought it was you neil if you could check it that would be great
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pm me your number quick chat before sleep
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yeh that looks pretty rich, mine went a similar way before the heater circuit died in it and it threw a code. Was bananas at cold start for a few weeks beforehand though.
If you can run the freeSSM software you can probably run romraider logger which will be able to show you the front o2 readings. |
All sorted lambda replaced :)
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Lambda
My 03 uk Sti has a strange stutter/hesitation missfire when cold for the first half mile then clears also uses a LOT of fuel when cold or crusing it uses less when it gets the boot when it gets the boot! I was thinking of replacing the front lambda does this sound like what yours did? Also how hard was it to remove I've heard they can be a pig?
Any advice would be much appreciated Cheers Mark |
Exact same issue mate but forgot to bump this mine is worse its now choking have changed
Cts 02 sensor Maf sensor Coil packs/plugs Still not fixed |
Originally Posted by peter zippy reid
(Post 11671056)
Exact same issue mate but forgot to bump this mine is worse its now choking have changed
Cts 02 sensor Maf sensor Coil packs/plugs Still not fixed |
Sorry forgot that mate yes did it twice
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Cold start mapping issue?
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Have dropped it off at the mechanics to have a look then if he doesnt find anything then mapper after that
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?
This started on mine after I ran a exhaust bung for a couple of days this started and I noticed the turbo temps were a lot higher when using it so I took it out
Do these have a exhaust temp sensor could that be at fault during closed loop operation also you can feel it switch to the map when you floor it then it runs mint or when it's warmed up |
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