N 75 valve going bad,misfiring ingnition coils...

[4r1ngk1ng]

My N75 valve is going bad and also ALL four ignition coils are misfiring. EXPENSIVE! I'm pretty new to Audi and cars in general. I was wondering if anyone had any advice on these things I already got a diagnostic but im not payin 1200 for these things to get fixed at eh dealer. So i'm thinkin about doing it myself. Anybody got some advice or suggestions. maybe a DIY?

My names Chris I got a Denim Blue 02 a4 55k miles. HOPFULLY SOMEONE CAN HELP ME OUT!

[LampyB]

The N75 isn't hard to replace, just a pain in the ass. Getting rid of all the one time use OEM clamps sucks a fat one, but other than that it's really just unplugging the attached wiring harness and several vacuum lines. might take you a while if you haven't been in there before. oh and the passenger side headlight will need to be taken off as well, but that's the easiest part!

what symptoms of a bad N75 are you having? just buy 4 new ignition coils for under $130 online and replace them yourself...literally takes ten mins. and can even be done while stuck on the side of the road. the N75 is around $90 at mjmautohaus.com, as well as the coil packs. do a search in the forums for a DIY install.

[4r1ngk1ng]

I went to the dealer and got a diagnostic. That the ONLY reason I know whats wrong haha.
Im getting some loss of power, rpm's and boost gauge go up and down a little if i go past 2800 rpms even if im not flooring it. Its retarded. still drivable, but annoying. in your opinion do you think i should upgrade the N75 or would it be a waste of time? I am planning on moding my car more soon...& thanks for replying I didint think i was gunna get one for a while.

Is that your clothing co.? the jacket's pretty sick

[A4 Moda]

What does the code say?

if it's "random misfires" in all 4 cylinders,
chances are it's your MAF.

GL

[onceover]

there no way any of that would cost $1200.

Do oyu have the actual codes they read?

If all 4 cylinders were misfiring, chances the car would run like absolute crap or not run at all. Like A4 Moda said it could be a MAF problem or even a boost/vacuum leak.

[4r1ngk1ng]

i was tinking it was a vaccum leak too i specifically told the dealership to check that out but they just said those two prblems...whats your MAF? and what does it do? how can i check to see if its that. they didnt give me the codes..

[BNZ TOY]

Ppl always say to unplug the MAF and see if that makes it better. If it does, then it's your MAF.

There is someone in the classifieds selling a MAF for 40 shipped.

[downhillracer]

Upgrade your diverter valve! (n75 valve) There is a group buy going on for forge 007 diverter valves right now, get one of those instead because a new oem n75 will just tear the internal diaphragm again, especially when you start doing mods!

Link to GB on 007 valve:
http://www.audizine.com/forum/showthread.php?t=174190

[Howard Hughes]

Upgrade your diverter valve! (n75 valve) There is a group buy going on for forge 007 diverter valves right now, get one of those instead because a new oem n75 will just tear the internal diaphragm again, especially when you start doing mods!

Link to GB on 007 valve:
http://www.audizine.com/forum/showthread.php?t=174190

N75 is not your DV...

[4r1ngk1ng]

Wheres my MAF and how do I unplug it to see? && what would I be feeling if my coils were misfiring? because if its ALOT I def. dont feel it. Just the loss of power and boost...

[onceover]

MAF is your mass air flow sensor, its plugged right into the airbox.

[FORCE_FED_DUB]

could be something as simple as your spark plugs.... and they are a hell of a lot cheaper than all of those other parts.

[absolutegtr]

possible a vacuum leak as well

[Audi Skate Snow]

wow this thread is all over the place...

[4r1ngk1ng]

I was told NOT to upgrade the N75 cause its pointless. Also ill try unplugging the MAF tomorrow; but why does it show an ignition coils misfireing code if its the MAF? j/w.hopefully I unplug the right one. If it was spark plugs wouldnt the car not start right? or am i just a nub lol.

I told the dealership to check for vaccum leaks but I dont think they did. I hear this big whistling noise that didnt used to be there..its def. not the turbo spoolin, but its basically only when the turbo spools so i think its a leak too..anyone know Johnathon Massey? thats who I bought the car from lives in florida. he gave me and f'd up car..I wanna get this crap fixed so I can start modding...