very rough idle, throwing codes everywhere...
#1
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i'm in a bind - i am throwing codes P1511 and P1517, and in between those, ALL of my cylinder misfires plus P0300. my code description cheat sheet is at work and i am at home...any idea what these are?
very rough idle (if it holds idle at all) and hesitant in the low RPM's. thanks for any help you can give me tonight...
very rough idle (if it holds idle at all) and hesitant in the low RPM's. thanks for any help you can give me tonight...
#4
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i have a list of code descriptions/testing/possible solutions, etc but it's at work. i'll be there tomorrow but just thought i could set my mind at ease tonight that it was something "easy". the first code on the list is P1511 "Throttle adjusting unit adapt. canceled due to environ. condit." then the next is P1095 "Air mass (HFM) ahead of throttle valve - implausible". then all the cylinder misfires, etc. somewhere down the line i also threw a P1517 which has the same title as P1511.
given all that, maybe emission/MAF/O2 sensor? coil/spark related? i.e. something outside the engine is causing misfires, it doesnt appear to be internal engine issue...
#5
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#6
Nordschleife Master
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It's your MAF(Mass Air Flow Sensor).
Disconnect it and see if she runs better. If yes,take the MAF out and clean it with MAF cleaner. If she runs good afterwards problem solved,if it's not you might need a new MAF.
What kind of air filter are you running? Is it clean?
Disconnect it and see if she runs better. If yes,take the MAF out and clean it with MAF cleaner. If she runs good afterwards problem solved,if it's not you might need a new MAF.
What kind of air filter are you running? Is it clean?
#7
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i was thinking about doing that actually, but i dont have a security torx bit - any way around that? i have a feeling if i just unplug it i will get more/other errors. stock filter and was changed last summer.
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#8
Nordschleife Master
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It doesn't matter you'll possibly get more errors,you're looking at an improvement at idle.
#11
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worked like a charm. unplugged it and she purred like a kitten. the only slight issue i have is that when i plugged it back in and tried again it ran fine also - no more problem! i'm thinking this may be a fluke/maybe it finally "cleared" whatever gunk was on there?? who knows but in any event i will get those torx and will clean it this weekend. i am thinking i will buy a new spare just to have on hand as well.
so one question - if this damn MAF is the source of so many ills (incl. a post on here somewhere by me where a 996 turbo was going into ABS/PSM mode while accelerating down a main track straight, all due to bad MAF!) why cant we just run without it permanently??
thanks again guys!
#13
Drifting
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Might be the contacts within the connector and/or the MAF line itself. Try some contact cleaner as well. I have not had to replace my MAF but I service/clean it with MAF cleaner spray each year JIC. BTW, here's an interesting thread on troubleshooting the MAF with the Durametric... http://www.6speedonline.com/forums/9...urametric.html
#14
Drifting
#15
Nordschleife Master
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oh man, you guys are genius (altho truth be told, it's probably a little more of me just being an IDIOT but...)
worked like a charm. unplugged it and she purred like a kitten. the only slight issue i have is that when i plugged it back in and tried again it ran fine also - no more problem! i'm thinking this may be a fluke/maybe it finally "cleared" whatever gunk was on there?? who knows but in any event i will get those torx and will clean it this weekend. i am thinking i will buy a new spare just to have on hand as well.
so one question - if this damn MAF is the source of so many ills (incl. a post on here somewhere by me where a 996 turbo was going into ABS/PSM mode while accelerating down a main track straight, all due to bad MAF!) why cant we just run without it permanently??
thanks again guys!
worked like a charm. unplugged it and she purred like a kitten. the only slight issue i have is that when i plugged it back in and tried again it ran fine also - no more problem! i'm thinking this may be a fluke/maybe it finally "cleared" whatever gunk was on there?? who knows but in any event i will get those torx and will clean it this weekend. i am thinking i will buy a new spare just to have on hand as well.
so one question - if this damn MAF is the source of so many ills (incl. a post on here somewhere by me where a 996 turbo was going into ABS/PSM mode while accelerating down a main track straight, all due to bad MAF!) why cant we just run without it permanently??
thanks again guys!