Volvo 850 Made from 1993 to 1997, this Volvo line was available in both a wagon and a sedan, both with were graced with several trim levels.

95 850 turbo problems

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Old 03-08-2010, 03:14 PM
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Default 95 850 turbo problems

Well I just fixed my PCV system pet everything back to together new intake gasket as well plugged every back together now it won't start It wants to from time to time but won't catch and I have tubing off of the turbo I'm getting soemtime sort of vapor coming out of the turbo after I've been trying to start it it did start for one second last night but died right off and couldn't get it the dist cap can only go on one way right any Ideas? Thanks
 
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Old 03-08-2010, 10:54 PM
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no one have any ideas?
 
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Old 03-09-2010, 05:53 PM
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should i try the oil in cylinders trick?
 
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Old 03-09-2010, 07:23 PM
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Could you re-word your issues, it's kind of really confusing to read.

Is your MAF plugged in?
 
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Old 03-09-2010, 07:43 PM
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car wont start im getting vapor out of the turbo after i have been cranking it over for 30 seconds or so. like its flooded; and yes the maf is plugged in
 

Last edited by 91shelby; 03-09-2010 at 07:47 PM.
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Old 03-09-2010, 08:18 PM
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Fuel, spark, timing. Do you have fuel and spark? Did you put the plugs on teh cap in the correct order?
 
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Old 03-09-2010, 10:14 PM
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well i got it running. cleaned the plugs and let the fuel air out of the cylinders and it fired up but now it idles ruff with the maf plugged in and when i unplug it it runs way better but still dies off after about 30 secs or so. and it seems im still getting oil coming from the pcv lines into the turbo, even after doing the box and lines.... what else could it be..? also what exactly does the ptc do?
 
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Old 03-09-2010, 11:21 PM
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never mind the maf with it unplugged it runs nice and smooth, with it plugged in it runs crappy,

one more thing if the bottom hole going into the engine from the pcv box was plugged would it cause the oil to get sucked into the ptc....?
 
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Old 03-11-2010, 08:36 PM
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anyone?
 
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Old 03-11-2010, 08:49 PM
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For one if youre doing your pcv job you must and I mean must clean out the ptc as well as the holes in the engine block. When I cleaned my ptc I use a a little pik to scrape the hardened crap inside the little hole. After you do the pcv job do an oil change and then drive a couple hundred km and do another oil change to make sure all the gunk is out.
also if you look under your throttle body you will see and electrical plug that should be plugged into the TB. Without this plugged in your car will run like crap. Also keep your maf plugged in. It is essential for correct a/f ratios.
Is your IAC clean?
 
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Old 03-11-2010, 09:25 PM
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yeah the ptc was horrid but i cleaned that out good, but i guess i must have missed the lower hole in the block if its still doing this. well im not gonna drive it with out the MAF unplugged im gonna try and clean it to see if it helps. but i have been told that if it runs fine with it unplugged its bad though and the IAC is clean i cleaned it before i put it back together i just didnt put the turbo piping on because i had a feeling something else would happen, also on the IAC the arrow is supposed to be going towards the tb right?
 
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Old 03-12-2010, 07:34 PM
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correct

just redo the pcv system.
it only takes an hr and a hlf the 2nd time you do it
and keep a magnetic picker upper handy
 
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Old 03-13-2010, 08:43 AM
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You can drive it with the MAF unplugged, but it definitely sounds like you need a new one!
 
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Old 03-13-2010, 11:55 PM
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Originally Posted by Psaboic
You can drive it with the MAF unplugged, but it definitely sounds like you need a new one!
I learnt something new. thanks! =)

With my car it ran like complete crap with the maf unplugged. I figured it couldnt be good for car running without it. Definately mess up the A/F ratios?
 
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Old 03-16-2010, 11:25 PM
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Update well i pulled the intake back off all the holes for the pcv going into the block are clean, the big hose going to the PTC is fine and clear, the small hose going to the ptc is a lil difficult to get air thru, would that cause the oil to be pulled into the large ptc line? now when i hooked up a hose to the lower hole in the block for the pvc i was blowing straight into oil, and if sucked up would pull oil out, so it seems like the vacuum of the engine is literally pulling oil straight from the block thru the pcv system..... could this be caused by overfilled oil pan? or the ptc seems weird that id be able to suck oil out of the hole....
 
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Old 03-17-2010, 11:41 PM
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Are you SURE that you kept the hose bracket on the outside of the intake manifold?
 
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Old 03-18-2010, 08:18 AM
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the one that holds the pcv lines yes
 
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Old 03-19-2010, 12:00 PM
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any other ideas?
 
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Old 03-19-2010, 12:31 PM
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Of course you will be sucking out oil if you hook a hose up to it and suck. That hole drains the oil from the oil trap back to the oil pan. Buy a new Maf? I can ship you one for $50. Did you clean your egr ports? Those will definately be clogged. CLEAN THEM WELL!!!!
 
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Old 03-20-2010, 02:52 PM
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where are all the EGR ports?
 


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