Volvo 850 2000t 20v

xrevoltadox · Post by **xrevoltadox** » 14 Oct 2009, 13:46

Hello i have an problem in my volvo, i have repair black smoke in the exhaust pipe and a lot of fuel consumption.
Can you help me?

Post by **polskamafia mjl** » 14 Oct 2009, 16:50

What year is your 850? And what exactly is your problem? I understand you have excessive fuel consumption, but what do you mean by "i have repair black smoke in the exhaust pipe?" Have you checked to make sure your airbox isn't stuck to the hot air side? Do you have any codes or is the CEL on?

Post by **misha** » 14 Oct 2009, 16:59

Could be a number of things like Maf,o2 sensors,vacuum leak...Read your codes and post'em here and than we will be able to help you.

If your car is '93-'95 you can read the codes yourself.Like this:
http://volvospeed.com/CheckEngine.php

If it's '96 or later you'll need scan tool/code reader to read the codes.

xrevoltadox · Post by **xrevoltadox** » 15 Oct 2009, 13:09

hello my is 1996, black smoke appears when the engine is hot when it keeps idling, already changed thermostat, pressure sensor of gasoline, spark plugs, spark plug cables, maf, rotor, distributor plate.

Post by **polskamafia mjl** » 15 Oct 2009, 14:24

Go to advanced or auto zone and have them read your codes for you, or borrow one of their scan tools. Post the codes back here and we can start figuring out what's wrong. Black smoke usually means you're burning oil so my first guess is that you have an oil leak. When was your last oil change and what kind of oil are you using?

Oh, and, just out of curiosity, what does "2000t" mean? lol

xrevoltadox · Post by **xrevoltadox** » 15 Oct 2009, 14:25

I use castrl txt 10-40 syntetic.

Post by **polskamafia mjl** » 15 Oct 2009, 14:39

Ok. When you say you changed the thermostat do you mean the one in the airbox? If so, are you positive that the aribox is working properly? Until you get the codes read and post them there isn't much else that can be done. Like I said, I'm pretty sure that it's an oil leak.

Airbox -> https://www.matthewsvolvosite.com/forums ... hp?id=1321

Post by **misha** » 15 Oct 2009, 16:25

polskamafia mjl wrote:Black smoke usually means you're burning oil so my first guess is that you have an oil leak.

Black smoke means that car is running rich!

When engine burns oil smoke colour is BLUE!

Check the codes and we will try to help you out.

Post by **polskamafia mjl** » 15 Oct 2009, 20:38

Good point Misha. lol Either way check the codes.

xrevoltadox · Post by **xrevoltadox** » 16 Oct 2009, 03:00

Hello my dont have any code errors , and my airbox dont have this termostat
My car is 2000cc turbo 180 hp europe verson