Engine running, very smoothly
Step taken:
1.) new cam position sensor
2.) new fuel pressure relay
3.) new Bosch plugs, gap .028
4.) replaced deteriorated vacuum hoses
5.) cleaned air box filter with air pressure
6.) next week replace twc at another shop

Thanks to all for the expert advise, I ...

Thank You

First TY "erikvII" for your detailed help.

I will do, "in order," your list of fixes.
In my question about the pvc-oil tray, could you help clear up the proper terminology. A few months ago, I was told by a local Volvo Dealer service dept that the 850 (2.3), does not actually have a PCV valve, just ...

Spark plugs replaced 15k ago with oem, will check compression & plug condition tomorrow.

Can anyone answer the questions below from my previous post?
Here they are again…updated slightly?

Also, have codes p0133, p0137, p0172 & p0440, I believe these are twc, o2 related, is that correct?
New fpr ...

Update
1.) Have codes, p1310, p0300, p0301,p0302, p0304, p0305, I believe these are all related.
Also, have codes p0133, p0137, p0172 & p0440.
New fpr, coil-igniter, fuel pressure @ 48, still no start, thinking cam postion sensor is bad, is there a to test the cam position sensor on the engine or ...

Spark & fuel pressure ok, going to remove the cat conv, goog chance it is clogged up.
Get bk to you soon, thx for all the help…

Slimflex2 & rafmarkham
Replaced fuel pump relay, (#103 printed on top of relay), fuel pressure at 48.
Have discovered there is no spark at the coil, order a new coil, it will be in today and hopefully that solves the problems.
Any more help is appreciated.

Slimflex 2 TY for your quick response

1. 1/2 tank of fuel
2. Yes, it cranks very well
3. Battery ck'd 2 weeks ago 13.6 amps

? 1. Is there a way to test the fuel relay
? 2. Could it be the fuel pump
? 3. If the fuel pump can it be accessed without dropping the tank.

I have a 1995 850 turbo wagon that will not start. The engine spins but will not start. This problem initially started last week but I was able to get the car started, then. As I would turn the key to start the engine after a few spins it would attempt to start but sort of miss fire, (tried to start ...