P0174 and P0171 Codes?
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You're selling your car - do you have a substitute?
There is no substitute...Originally Posted by FAST FWD
Are you sure that the whine is PS pump? Could it be the secondary air injection pump? This could affect what the O2 sensors see.You're selling your car - do you have a substitute?
Interesting point about secondary air injection pump. Will it sound like the PS pump?
Not yet , something NA for sure this time. Maybe a Gt3...going to take it easy for a while and then will see.
Not yet , something NA for sure this time. Maybe a Gt3...going to take it easy for a while and then will see.
Boost leak almost for sure. The computer is running out of leeway to adjust discrepancy between meassured air and what it sees as normal fuel.
had the same exact codes after I redid my IC, Turbos, Y pipe (obviously lots of places to re-check). Once it was boost tested, the codes were gone for good.
had the same exact codes after I redid my IC, Turbos, Y pipe (obviously lots of places to re-check). Once it was boost tested, the codes were gone for good.
. Good luck V - hope you find the right car for you.
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had the same exact codes after I redid my IC, Turbos, Y pipe (obviously lots of places to re-check). Once it was boost tested, the codes were gone for good.
Thanks will check for boost leak. My tuner thinks it could be air leak near throttle body.Originally Posted by ari
Boost leak almost for sure. The computer is running out of leeway to adjust discrepancy between meassured air and what it sees as normal fuel.had the same exact codes after I redid my IC, Turbos, Y pipe (obviously lots of places to re-check). Once it was boost tested, the codes were gone for good.
Hey Vinod, check all your vacuum lines...pulled my hair out on this one until I boost leak tested it....doesn't take much of a leak to **** this ECU off...
https://www.6speedonline.com/forums/...en-solved.html
https://www.6speedonline.com/forums/...en-solved.html
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if you have a leak, what happens it that the feul calc based on the MAF and the calc based ont he O2 sensors will be off- the DME adjusts the short term fuel trim to compensate...as this continues the long term fuel trim is periodically incremented so that after a while (say 50 miles) the long term fuel trim is finally out of spec and you trip codes.Originally Posted by vbmw335
Thanks will check for boost leak. My tuner thinks it could be air leak near throttle body.
With NA cars it is usually a vacuum/intake leak.
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With NA cars it is usually a vacuum/intake leak.
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Originally Posted by ard
if you have a leak, what happens it that the feul calc based on the MAF and the calc based ont he O2 sensors will be off- the DME adjusts the short term fuel trim to compensate...as this continues the long term fuel trim is periodically incremented so that after a while (say 50 miles) the long term fuel trim is finally out of spec and you trip codes.With NA cars it is usually a vacuum/intake leak.
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...and for the most part our cars are NA, until we spool'em up...
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The same principle applies- air leaking OUT after the maf due to pressure will do the same thing....just a fuel trim error in the other directionOriginally Posted by ttboost
...and for the most part our cars are NA, until we spool'em up...
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https://www.6speedonline.com/forums/...en-solved.html
Mike. Thanks. This is the same exact code my car threw when i was idling the car today and checking things out. I cleared it and then it idled high and low again and threw a bank 1 misfire codes. Cleared that and then it went away..Originally Posted by ttboost
Hey Vinod, check all your vacuum lines...pulled my hair out on this one until I boost leak tested it....doesn't take much of a leak to **** this ECU off...https://www.6speedonline.com/forums/...en-solved.html
I guess the next step is boost leak , smoke test the car...just hoping its a hose that doesn't require engine out.
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With NA cars it is usually a vacuum/intake leak.
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makes sense, but if there is a boost leak will my car still make full boost and power? I am still hitting 1.2 bar.Originally Posted by ard
if you have a leak, what happens it that the feul calc based on the MAF and the calc based ont he O2 sensors will be off- the DME adjusts the short term fuel trim to compensate...as this continues the long term fuel trim is periodically incremented so that after a while (say 50 miles) the long term fuel trim is finally out of spec and you trip codes.With NA cars it is usually a vacuum/intake leak.
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Yes because your wastegates are limiting your boost to 1.2! If the leak is small or on inlet side of turbos. I feel its on the maf to turbo side of things, best bet is to smoke it.........
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I guess the next step is boost leak , smoke test the car...just hoping its a hose that doesn't require engine out.
If you are getting p0507, 0171, 0174.... without a shadow of a doubt you have a vac leak.Originally Posted by vbmw335
Mike. Thanks. This is the same exact code my car threw when i was idling the car today and checking things out. I cleared it and then it idled high and low again and threw a bank 1 misfire codes. Cleared that and then it went away..I guess the next step is boost leak , smoke test the car...just hoping its a hose that doesn't require engine out.