2008 V70 3.2l PO105 after alternator replacement.

volvooh · Post by **volvooh** » 28 Aug 2023, 06:29

Replaced the alternator in my 2008 V70 with 140K mi. It has the 3.2l inline six, non turbo. Got a used replacement from Erie Vovo (I believe it as a Napa reman. The clutch on the old alternator was completely locked up. After installing the new alternator it charged as it should except now I have a PO105 and a P2227 code. I clear it and it comes right back. I have retraced my steps to be sure I reconnected all the electrical connections on the intake, paying careful attention to the MAP sensor and what I believe the be the vaccuum hose on the drivers side just about the throttle body.

Any ideas?

Post by **xHeart** » 28 Aug 2023, 12:46

volvooh wrote: ↑28 Aug 2023, 06:29 Replaced the alternator in my 2008 V70 with 140K mi. It has the 3.2l inline six, non turbo. Got a used replacement from Erie Vovo (I believe it as a Napa reman. The clutch on the old alternator was completely locked up. After installing the new alternator it charged as it should except now I have a PO105 and a P2227 code. I clear it and it comes right back. I have retraced my steps to be sure I reconnected all the electrical connections on the intake, paying careful attention to the MAP sensor and what I believe the be the vaccuum hose on the drivers side just about the throttle body.

Any ideas?

What do you mean^; the codes come back upon ignition - idling?

volvooh · Post by **volvooh** » 29 Aug 2023, 11:42

When I clear the codes, while the car idles it shows no codes but after a few minutes the CEL reappears and the two codes are back.

Post by **xHeart** » 29 Aug 2023, 12:48

volvooh wrote: ↑29 Aug 2023, 11:42 When I clear the codes, while the car idles it shows no codes but after a few minutes the CEL reappears and the two codes are back.

Please check on items 16 & 17; the connectors may not be seated properly.

Post by **pgill** » 29 Aug 2023, 18:45

pgill wrote: ↑15 Jan 2022, 22:04 Pending code

P2227 - barometric pressure sensor intake manifold

I need to disclose something; I broke the latch for the connector on my MAP sensor about a year ago and I did what I would call a field expedient repair. I RTV the connector body to the MAP sensor. And this worked for about a year.

I did research for a new connector and I found Volvo Part # 30658215

Here is a post that shows the connector viewtopic.php?t=97681

My RTV repair was holding so I didn't bother to replace the housing before today.

The weather was nice today in the afternoon so I decided to give it a go.

It wasn't really hard.

The White part had to be removed and I used a small screwdriver to depress the plastic retaining tab so that the wires could be pulled out.

The terminals on the end of the wires has two locating features that force you to insert the terminal into the housing only one way. (It is essentially a square so you only have 4 choices and only 1 works) Once you get the first one to seat the rest are easy.

The click the I heard when I seated the connector on the MAP sensor was so satisfying.

Nothing compares with being able to fix something simple like this.

The Engine started right up (so it is unlikely that I swapped the order of the wires)

The scanner that I bought is so nice, as soon as I connected it it gave me a yellow warning. (Which is why I decided to do this today)

I will post here if I have to repair this connection further.

Thanks

Paul

viewtopic.php?t=87687&start=160

EDIT: this is the connector that connects to item 17 in the diagram above (note: VOLVO calls it a receptacle) and you will need a special tool to remove the terminals from the receptacle and you will need a new receptacle

Good luck

Paul