code 00553 Mass Air flow Sensor

[CROWN]

I looked up on ross-tech wiki which has all the codes from vag com. the only code that i have that i couldn't find is 00553 the mass air flow sensor short to ground....what are the causes/symptoms/corrections for that? Only code i threw that coudn' find on the website found all the other ones



I showed 4 faults

00533 - Idle speed regulation
adaption limit surpressed

00553 - is the mass air flow sensor
Short to Ground

00543 - Maximum Engine Speed Exceeded - Engine warranty VOID! ;) (thats exactly wha it showed lol) Intermittent

00515 - Camshaft Position (hall) sensor
Open to short to plus - intermitent ????? whats that mean

[OrangeDUB]

How is it running?

[CROWN]

wants to die at idle but doesn't. sometimes misfires while just cruisin down the hwy has no get up and go tilll like 3k rpms

[GetAwayFromMe]

Sounds to me like timing belt jumped couple teeth.

[CROWN]

first thing we checked. since the crank gear has broke off 3 times now. we should have it on lockdown now shoudln't break again. We did good puttin the bitch on this time. shouldn't budgee. sometimes it'll idle perfect, sometimes it'll idle like ****. check engine light always on no matter what though. ill scan it again today while its running this time just not on ON position and see what happens. Might just be the crank sensor

[OrangeDUB]

Clean the MAF with rubbing alcohol, and remove and clean the throttle body with carb cleaner. That would cost you about $4 total... do that and we'll go from there. And no cylinder # misfire codes???

If you have an oscilloscope you can measure the cam sensor to see it pulsing, but I doubt you have one as they are quite expensive :(
The cam sensor is a switch that reads the magnetic pickup on the cam sprocket.

AS A SIDE NOTE: When my crank sensor went bad my car threw some of the same codes as your car but it would idle fine and run fine below 4k, because the computer would use known values for the fuel injection and timing.

[OrangeDUB]

I wouldn't overlook the vaccuum system for the bad idle as well...

[CROWN]

is the cam sensor on the right side? on the head. plain site? 2.0 of course. I was thinkin of taking it out and seeing what it looks like. i've never messed with a cam sensor before. I just cleaned the maf and tb. and intake pipe. im going to go to my buddies and scan it again while its running. see whats up.

[OrangeDUB]

The cam sensor pickup is on the wheel that would be on the timing belt, and the actual sensor would be aligned with the gear some how..

Any improvement with the idle after cleaning the TB and MAF?

[CROWN]

no but scanned again and just threw the maf sensor everytime. and the cam positions ensor code only threw like every othe time we scanned it so its intermittent

[Black86gti]

un plug the maf and see what happens. you proly just have a dead sensor. you can back probe the wires should be hard to see a short to ground across the sensor. theres 5 volts going in and it changes as air is drawn over the sensor. pin test the sensor and see what the resistance is. do you have a manual? it should give you some indication of what the readings should be.

and casey lab scopes are key except i just sold mine. you can pick up a mac or OTC scope pretty cheap

[CROWN]

yea im weatting for my maf sensor tommorow hopefully carquest gets it like they said they would. 62 bucks

[SirRangeALot]

00543 - Maximum Engine Speed Exceeded - Engine warranty VOID! ;) (thats exactly wha it showed lol)

Weird... :sly:

[lreven]

I might have missed it in your post but check the vacuum system too...I had similar errors and look like MAF. Ended up being a couple $ hose.

Good luck!

[CROWN]

I be's lookin. carquest actually ordered the wrong part. got a air temp sensor instead? I was wondering why it was so cheap. So Im thinkin im going to a junkyard to jank a couple maf sensors and cam sensors

[OrangeDUB]

Cool. Replace those and we'll go from there!

[justin]

I wouldn't overlook the vaccuum system for the bad idle as well...

mmhmmm.

[OrangeDUB]

I wouldn't overlook the vaccuum system for the bad idle as well...


I might have missed it in your post but check the vacuum system too...I had similar errors and look like MAF. Ended up being a couple $ hose.

Good luck!


mmhmmm.

Have you looked at it yet? I hope you have a garage to mess around with it in :p

[CROWN]

i do have garage ran out of propane so no heat in there though i'll look at it once the snow is off of it again.

[CROWN]

replaced sensor. Idles better hasn't wanted to die. I unplugged it and ran like it did before. the code is there. I thought codes go away on obd1's when you replace the part. If i have to clear it thats fine I can easily. But so far it idles better. can't drive it becaue tires are off on the back from some rubbage I occured from lowering the ass more.

[OrangeDUB]

replaced sensor. Idles better hasn't wanted to die. I unplugged it and ran like it did before. the code is there. I thought codes go away on obd1's when you replace the part. If i have to clear it thats fine I can easily. But so far it idles better. can't drive it becaue tires are off on the back from some rubbage I occured from lowering the ass more.

On OBD1 and OBD2 you need to clear some codes before they go away. More clearly what I mean is that a code can be thrown and even though the check engine light may turn off it will still store the code. If you had the good MAF installed then unplugged it, that would trigger the code again... Clear the codes and then compare the old set of codes to the possible new ones. (hopefully none ;))

Have you carefully inspected the vaccuum system yet? A good MAF can make it idle better, but you don't know if that was the ONLY problem. I guess you'l find out how it runs once you get it driveable again! :tu:

[CROWN]

yes ik. I found a lot of oil in my intake box on top of filter before and after maf all the way to the TB theres quite a bit oil. More than i figured needs to be in there.

[OrangeDUB]

Anywhere that could be coming from? I can't really answer that coming from a vr6 owner. Maybe there are some vac lines hooked up wrong or something... I wish Kevin would chime in as he is the resident expert on all things car-related :p

[CROWN]

pcv valve might be bad if thats the thing im lookin at on the motor. where it goes from the valve cover to some circular thing to the intake pipe

[OrangeDUB]

pcv valve might be bad if thats the thing im lookin at on the motor. where it goes from the valve cover to some circular thing to the intake pipe

Yeah it could be stuck open. That sounds like it alright. If you take it out you should be able to blow air in one way but it should prevent you from blowing into it the opposite way. You might want to wipe it off first :)

[CROWN]

welp scanned car 2nite. maf code went away. idles better where it should be but seems like its misfiring. The code its only throwing now is the cam shaft position sensor. so Im thinkin i should get that replaced. weird thing is only shows code every other time. so its intermittent. might have bad connection or somethen i'll have to find out what all involes the cam sensor.

[CROWN]

this website gave me a better understanding on the cam senser *hall sensor)
http://www.digitaldownpour.com/blog/general/10-03-2005_camshaft_position_sensor_faq.html?showcomment s=y

i can't find a sensor or anything a like anywhere for it. like if the sensor was bad can't figure out what i'd have to replace can't find a part or anything

[OrangeDUB]

There are some on ebay. I'd try a junk yard as well. I think it would be over $100 at the dealer unfortunately.

When my CRANK sensor went bad it triggered the "camshaft positioning sensor" AND the "engine speed sensor" (crank sensor) and it was only the crank sensor that was bad.

When does it misfire? That is important.

At idle and below 4k rpm's my car ran fine becauase the computer woudl use known good values. Above 4k rpms it would run really bad.

[CROWN]

mine sounds liek its missing just at idle. but idling still around 900. I've just been ablve to rev which when i rev and hold its fine. I can't drive till tommorow night maybe.

[vwmeister]

Have we.

1. checked the main engine wire harness couplings?
2. checked all ground and positive battery connections?

At your car's age. Stray or poor voltages and bad grounds are the MOST likely causes of problems you're experiencing.

Basics first!

Just my .02 worth :)

[CROWN]

put new battery in not to long ago. so those wires are A ok. Couplings no. had to park it out of garage due to mom complaining i taking up her space so when i get time i will. Work 50 hours a week.