MP3 turbo Idle problems.

[1sty]

OK heres the news so far. Car is at the dealer and they assume a MAF malfunction.

The engine is throwing code #P1504.
I guess this is an Air fuel ratio code?

FM ruled out the blow off valve since its a recirculating one and there is definitly no leaks to the atmosphere.

 

[1sty]

Well they found the problem. The ECU is F-D!
It is not showing ground for the IAC valves ground wire. aparently ground should be passed through the ECU and it is not doing so.

They have a new ECu onorder but want me to pa them $150 for the time it took to "rule out" the turbo system. I basicly refused this. We left it as we will see shen the ECU gets in since they said they can't go anty futher since it could still be the turbo.

There was alot more said but this is the simple version.

 

[70]

WOW!! Any ideas about how the ECU took a dump??

 

[1sty]

Im more concerned that they don't know why it did and they are willing to just plug another one in to see if it does also.

I take it there is no way in hell the turbo could do this?

 

[70]

I don't think so...I would think it would have been something that happened either during the install of the "device", as in accidentally pulling a wire to tight or something, or it was faulty from the factory.

The factory is the most likely cause in my mind. They didn't get the wire in right or something.

 

[1sty]

Thats the weird part the wires are fine, The hypothesis is there is a break inside of the ECU.

 

[70]

Thats the weird part the wires are fine, The hypothesis is there is a break inside of the ECU.

I have no idea how that would happen, that would definitely be a factory issue then...

 

[Stou]

Maybe it's just a bad weld on the board of the ECU