Rhag1128, thank you for your thoughts. I still wonder if the directions of the check valves air flow is corrcet - on the picture I put an arrow pinting the direction right now and I would like to know if it is correct or not? Any ideas? By the way - #1 is attaching to the engine next to the throttle...

Hello everyone, please help me find the reason for the oil drops ( not a leak but anoying drops) - I took a picture and I need someon who can tell me the name of the parts 1, 2 and 3 and if they can be the reason for the oil drops? http://img257.imageshack.us/img257/4044/0801140014wu9.th.jpg Another...

Hello, Here is my wild gues: this funny trouble maker pipe goes up under the cover of the fuel rail and continues above the engine next to the fuel rail (it is one fo the 2 metal pipes on the front top left side of your engine (looking from the front of the engine)) My conclusion is - the fuel deliv...

some more pictures:

Here is the picture of my engine's front side with the 3 vacuum lines I need to identify. I put numbers to each of them to be easy for you guys to identify them. I cannot find even at Volvo the vacuum elbow that connects the metal vacuum line goinog up under the fuel rail. Any idea - I think it is a...

An update: The new throtle body gasket and spark plugs are installed; My short and long trim fuel delivery is good - it is + 1 to +4 and I know up to +8 is acceptable, so I rulled out the fuel delivery; I noticed that when the RPM drop the reading from the MAS drops to 2.3g/s which is low. At idle t...

Hi, I did clean the idle valve - it wasn't so bad.
Do you know what are the normal values on OBDII from the idle valve and for the MAF?
I will send pictures the next time I post

Hello Volvo community, My faithful Volvo 850AWD is giving me some hard time recently. Under hard braking I saw how my rpm dropped to around 500rpm and then went up to almost 1000 and then went to the normal around 850RPM. I noticed that when I go to a stop some times the RPM is unstable and the car ...

There is a vacuum diagram for my T5 up in the repair database that will help you with your questions. As our cars are only 1 year difference, the vacuum routing should be the same. Here is the link: https://www.matthewsvolvosite.com/forums/viewtopic.php?t=6941 Thank you for the digram, but I need m...

[quote="oceanman"]i i replaced most of the rubber vacuum hoses with silicone ones. the old rubber hoses were rotting out (i constantly pull dtc's 212 and 153 (o2 sensors) and want to try to fix any vac leaks before i jump on the sensors). i even replaced the elbows for the fpr and egr. whe...