Any suggestions on where to start troubleshooting? Just bought the wagon. 85000 miles and past maintenence schedule is unknown.

Gary

 

Have the same problem on my V70. Here is a link:

https://volvoforums.com/m_25746/tm.htm

 

I will have to try to crossrefrence it tomorrow and see what it is in the Volvo code so I can dig up more info.

 

Tech- I appreciate that. Please let me know if you find anything.

Gary

 

Sorry but I forgot.

I have to try to figure out how to set a reminder in my phone to remind me.

(Work was H*** today)

 

Tie a string around your finger. Sometimes the old fashion ways are the best ways.

 

Yah I know I have to do something.

But by morning I will forget the string!!!!!!! LOL

 

Update:P-0172= Volvo code 231/232 Long term fuel trim Idling Upper limit.

Possible sources: Mass flow sensor bad,Low fuel pressure,Air leak,Faulty Pulsation Dampner,Faulty sensor signals.

Did you also have a P0440?
If so then you need to check the Evap system as well.

I would start looking for a Vaccum leak first. TipCheck the end of the intake by the Power steering pump and make sure the Elbow doesn't have a hole in it. That is if you have one.

Then I would check fuel pressure. Then make the Mass flow the last item.

Hope this helps.

 

Tech- I replaced the front o2 today. What a be-atch to get to the connection. When I did, I found a rubber plug on the intake side that was split in two. I replaced it with a new one. I do see tht a lot of my vacuum lines are getting old. Is there a complete kit out there, for an 850 T-5 or do I have to piece one together as I go along?

Gary

 

Peice together as you go.

You might want to find a good set of the colored neoprine hoses and use them.

Ditto about the O2 sensor. I have replaced about 100 of them in the last 6 years.

 

Check out this post for a vaccum hose kit.

http://volvospeed.com/vs_forum/index...howtopic=40486

 

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