MAF Sensors, is it possible

[ekstroemtj]

That this parts can fail already after one year?

I change both last year. Both new.

I have random PSM problems and car goes to limp mod. Sometimes. I take it to porsche. Today i got a call. We changed the MAF sensors. That was the reason for your problems.

Is this really possible? I cant believe

[Silver_TT]

Not likely, but is possible. Porsche parts are typically covered by a 2yr unliminted mileage warranty (at least in the USA, assuming similar in Germany?) so you shouldn't have to pay anyway......

[ekstroemtj]

Thank you. Didnt know this. I have to ask.

[Silver_TT]

I can't speak for Germany but in the USA it's covered....and if Porsche did the work, the labor to install should be covered as well (although not the diagnostic time).

[ekstroemtj]

Thank you. I will see how much i have to pay.

Maybe i could ask you one more question. Its not related to the MAF's but needed to discuss with the shop too.

They changed the drive belt some days before. No its making squezzing noises sometimes . Sounds not nice. The shop try to tell thats usual with a new belt. Cant believe it.

What you think about this ?

Thank you for your time

[Silver_TT]

I'm not familiar the squealing you are describing -- maybe others have some experience with that. Have you checked the usual culprits: tensioner, etc?

It sounds like you are having this work done at a Porsche dealer, so I would just document this issue with them stating that this started immediately after they replaced the belt. Then drive the car to see if it goes away soon as the belt breaks in, as they have advised..... if not, they should fix it.

[ekstroemtj]

Thank you!

[ekstroemtj]

I took back the car from porsche shop. As you remember i had a heavy PSM failure and car even was not starting well. They changed the 2 MAF because PIWIS show that would be the reason. The made a long testdrive. Everything ok BUT BUT TODAY AGAIN . I drove to wash the car and ob the way back home again on the display. Psm failure. Workshop. What my god this can be. If someone has an idea i will be happy

[Silver_TT]

PSM and ABS problems can be fairly common when you have a bad battery and/or failing alternator. Did the dealer test your battery and check downstream voltages? What codes are showing up now with the repeated failure?

[ekstroemtj]

Thank you for your response. I ask them to check the voltage of both batteries . I dont know if they did. When i take back my car yesterday late nobody from the mechanics was there.

The new psm failure happend today. Its sunday. Tomorrow i will bring back the car to porsche. They have to read PIWIS and we will see which codes this time are showing up. batterie is only 3 month old. 2 batterie in 2 years. Afraid even to drive one meter.

[Silver_TT]

Even if the battery isn't that old I would still be sure it's tested. If it checks ok you would want to look further downstream to be sure voltage isn't being lost. To be sure your money isn't wasted throwing parts at it at your cost, I would be sure to read the codes and follow the diagnostics. I think you really need the codes before you can decide where to go from here if your battery and downstream voltage all look good.

[ekstroemtj]

Thanks. You are right. I changed already throttle body and MAFs and batteries only because of this PSM story.