PO171 & 174 Codes (Need Advice)
12-07-2011, 04:32 AM
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PO171 & 174 Codes (Need Advice) Hey Guys,
On my 07 V i just installed a CAI and Ported the TB. It has the stock tune. Shortly after i did these mods i got the 171 and 174 codes. Would a dyno tune solve my problem? I have checked for leaks and couldn't find anything. I am going to clean the MAF tomorrow to see if that helps? It is running normal but i know it is getting a ton more air now and didnt know if the ECM could adjust enough.
Need some advice here..
Thanks,
Brent
On my 07 V i just installed a CAI and Ported the TB. It has the stock tune. Shortly after i did these mods i got the 171 and 174 codes. Would a dyno tune solve my problem? I have checked for leaks and couldn't find anything. I am going to clean the MAF tomorrow to see if that helps? It is running normal but i know it is getting a ton more air now and didnt know if the ECM could adjust enough.
Need some advice here..
Thanks,
Brent
12-07-2011, 05:33 AM
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It needs to be pretty lean to throw those codes. I wouldn't drive it too hard.
Clean the MAF and double check for leaks. Even though the TB is after the MAF, I wouldn't think it'll make it so lean as to throw a code.
If there are no leaks, and the MAF and TB are working properly, a tune should clear the problem.
Tony
Clean the MAF and double check for leaks. Even though the TB is after the MAF, I wouldn't think it'll make it so lean as to throw a code.
If there are no leaks, and the MAF and TB are working properly, a tune should clear the problem.
Tony
12-07-2011, 06:16 AM
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Thanks Tony. I just figure if there is a vaccum leak it would run funny or at least idle high?? Maybe the MAF needs to be cleaned??? I will check back in after i clean the MAF sensor in a couple of hours. Anybody else think it just needs a tune?
Thanks,
Thanks,
12-07-2011, 10:02 AM
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Suprisingly I cleaned the MAF with the MAF Sensor Spray and the light hasnt came back on? I didn't figure that would work? Anyway If it comes back i guess i will just get a tune. LOL
L8R guys!
L8R guys!
12-07-2011, 03:26 PM
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Probably too much oil on the filter. You might want to spay the MAF again after a couple hundred miles.
If you don't already know this, the O2 sensors are not used to correct fueling above 4K rpm. If the MAF is causing a lean condition (even with no CEL) you WILL be lean at WOT. I can't say if it will be a little or too much, but it's something to keep in mind.
That being said, I'm glad it was an easy fix.
If you don't already know this, the O2 sensors are not used to correct fueling above 4K rpm. If the MAF is causing a lean condition (even with no CEL) you WILL be lean at WOT. I can't say if it will be a little or too much, but it's something to keep in mind.
That being said, I'm glad it was an easy fix.
