02 Audi A6 Quattro maf questions

[Xavier36]

I have an 02 Audi A6 Quattro 4.2 my issue is have a new maf and new connector unfortunately I unplug the maf and car still runs, while driving n maf plugged it's crappy unplugged it's excellent any input on my issue with my maf

 

[NoSlo]

New doesn't always mean that it is good. Kind of like new members that "introduce themselves" in a Ford Taurus forum with Audi questions.

 

[Csbbrah]

Sell it and buy a SHO.

Sent from my LM-Q610(FGN) using Tapatalk

 

[blk\blk90]

https://www.audiworld.com/forums/

 

[Xavier36]

Sell it and buy a SHO.

Sent from my LM-Q610(FGN) using Tapatalk

Sell it n buy a new what car? I'm not selling the car you want to buy it?

 

[Xavier36]

New doesn't always mean that it is good. Kind of like new members that "introduce themselves" in a Ford Taurus forum with Audi questions.

it's a bosch

 

[luigisho]

It it were my car I would look at a good working oem unit or the connector is bad. Could be something else in the wiring or computer but I would not go there until I was sure about the MAF and connector. Usually if it runs better on default without the sensor, the sensor is faulty.

 

[Xavier36]

It it were my car I would look at a good working oem unit or the connector is bad. Could be something else in the wiring or computer but I would not go there until I was sure about the MAF and connector. Usually if it runs better on default without the sensor, the sensor is faulty.

I reset ecm yesterday it ran good for an hour then a wire came a loose and it started acting up again going to tackle it again today

 

[luigisho]

Wiring issues will make you chase your tail. the hardest part is finding it. if you know where it is then your way ahead.

 

[Xavier36]

Not even close to it

 

[NoSlo]

What was the symptom that made one replace the MAF and its connector in the first place? If all that work didn't change the symptom, then you might just be barking up the wrong creek without a paddle.

 

[Xavier36]

What was the symptom that made one replace the MAF and its connector in the first place? If all that work didn't change the symptom, then you might just be barking up the wrong creek without a paddle.

It's jerking n stalling lost of power especially when going up hill

 

[SHOdded]

You would think this would set codes of some kind? Have you pulled plugs to assess combustion conditions? Could be a spark plug, fuel injector, knock sensor, just about anything without any help from codes.

I would consider changing the fuel filter if you have not done so already.
https://www.rockauto.com/en/catalog/audi,2002,a6,4.2l+v8,1382992,fuel+&+air,fuel+filter,6200

 

[luigisho]

Echoing above. You should have stored computer codes. Those should always be 1st check unless you have an obvious issue like a spark plug blew out of the head or broken wire connections

 

[Xavier36]

What was the symptom that made one replace the MAF and its connector in the first place? If all that work didn't change the symptom, then you might just be barking up the wrong creek without a paddle.

It's bucking n loosing power especially uphill

 

[Xavier36]

I have an 02 Audi A6 Quattro 4.2 my issue is have a new maf and new connector unfortunately I unplug the maf and car still runs, while driving n maf plugged it's crappy unplugged it's excellent any input on my issue with my maf

I was told today it could be grounding issue

 

[Xavier36]

When it's plugged there is no code now just drive funny.

 

[luigisho]

Could be grounding issue. Also some aftermarket parts are suspect. I never trusted aftermarket MAFs and always (after I got a bad aftermarket one) got a used factory replacement. Search what Audi models use the same MAF as the one in your car and look around for a used replacement. That's my best guess without getting more information or getting my hands on it. I guess I would also look at the connector replacement and the wiring there

There are local salvage yards and also used auto part search engines on the internet that make locating what you want very easy. also ebay

 

[Xavier36]

Could be grounding issue. Also some aftermarket parts are suspect. I never trusted aftermarket MAFs and always (after I got a bad aftermarket one) got a used factory replacement. Search what Audi models use the same MAF as the one in your car and look around for a used replacement. That's my best guess without getting more information or getting my hands on it. I guess I would also look at the connector replacement and the wiring there

There are local salvage yards and also used auto part search engines on the internet that make locating what you want very easy. also ebay

It's Bosch

 

[SHOdded]

Both the 2.7SC and the 4.0 apparently use a MAF sensor, and I ASSUME they are not interchangeable, but I could be 200% wrong on that.