850 fuel mileage problem

chrisjm91 · Post by **chrisjm91** » 26 Jul 2014, 11:46

My 95 850 turbo no mods is not getting the mpg's that it should. My last 850 was a 96 non EGR And it took me from Virginia to Florida on one take of gas and could ride around town most of the day without noticing the gas gauge move. But my current 95 850 W/EGR guzzles the gas. Now I had the engine replaced with a used engine with low miles and had them replace all the essentials while they were at it ; timing belt & pulley, water pump & many other odds & ends. So where is my gas mileage going? Fuel filter or pump, egr valve, dirty air filter, pvc system, injectors or what do you think? Please help thank you!

Post by **RussB** » 26 Jul 2014, 12:13

Let's start with the basics...How many MPG's are you getting?

chrisjm91 · Post by **chrisjm91** » 26 Jul 2014, 12:51

On my dash, its averaging 14 to 16 on a good day...

Post by **RussB** » 26 Jul 2014, 15:28

Read the DTC codes and report back...

https://www.matthewsvolvosite.com/read-codes-volvo-850

chrisjm91 · Post by **chrisjm91** » 27 Jul 2014, 07:33

I own my own obdII system, and the only code ever thrown was an "EGR Flow" code. And that didnt happen until I removed the intake manifold for cleaning. But the gas mpgs were down before that. Im sure the egr flow isnt helping.

chrisjm91 · Post by **chrisjm91** » 27 Jul 2014, 07:38

I did not see this code in your link and I have the car apart cleaning the pvc system right now so I cant plugIthe obd2 scanner to it right now. But thats all the code said ""EGR FLOW" no more no less, and im pretty sure it was po400 but like I said I didn't find that in yoir link.