Volvo 1987 740 Turbo Gas Hog !!!!!!

Thread view:

Enable EMail Alerts

Start New Thread

Thread rating:

circuit slave - 09 Feb 2006 04:23 GMT

I get like 10 miles to the gallon it seems! It wasn't like this a
couple years ago. I don't really smell fumes and I don't use the turbo
that often. And you know how, they say you usually get more mpg
highway than in the city? Well, it seems as if I get better mileage if
I don't take the freeway. I can practically watch the fuel guage go
down as I drive across town.

Can someone recommend best way to increase mileage? The car was
recently smogged and it idles fine I guess, no misfire or hesitation
really. Fuel filter maybe?

thanks

Reply to this Message

James Sweet - 09 Feb 2006 07:31 GMT

> I get like 10 miles to the gallon it seems! It wasn't like this a
> couple years ago. I don't really smell fumes and I don't use the turbo
[quoted text clipped - 8 lines]
>
> thanks

Air hoses between the turbo and intake manifold are the usual cause of
excessive fuel consumption. Bad air mass meter can do it, or you might
have a fuel leak somewhere too. Fuel filter won't increase consumption,
if it gets clogged it just won't run right.

Reply to this Message

NeedforSwede2 - 09 Feb 2006 16:37 GMT

> > I get like 10 miles to the gallon it seems! It wasn't like this a
> > couple years ago. I don't really smell fumes and I don't use the turbo
[quoted text clipped - 13 lines]
> have a fuel leak somewhere too. Fuel filter won't increase consumption,
> if it gets clogged it just won't run right.

Bad Lambda sensor/2 Sensor can affect fuel use to.

Signature

Carl Robson
Car PC Build starts again. http://smallr.com/rz
Homepage: http://www.bouncing-czechs.com

Reply to this Message

jg - 10 Feb 2006 01:35 GMT

> I get like 10 miles to the gallon it seems! It wasn't like this a
> couple years ago. I don't really smell fumes and I don't use the turbo
[quoted text clipped - 6 lines]
> recently smogged and it idles fine I guess, no misfire or hesitation
> really. Fuel filter maybe?

Could it be something more basic like binding brakes or slipping
transmission or clutch?

Reply to this Message

circuit slave - 10 Feb 2006 03:16 GMT

Thanks all for the replies. I will look into it!

> > I get like 10 miles to the gallon it seems! It wasn't like this a
> > couple years ago. I don't really smell fumes and I don't use the turbo
[quoted text clipped - 9 lines]
> Could it be something more basic like binding brakes or slipping
> transmission or clutch?

Reply to this Message

circuit slave - 10 Feb 2006 03:17 GMT

Well, I did change the rear brakes a month ago. But I believe it has
been like this even before I changed the brakes. That's something to
look at too, I guess. thanks.

Reply to this Message

jg - 10 Feb 2006 05:57 GMT

> Well, I did change the rear brakes a month ago. But I believe it has
> been like this even before I changed the brakes. That's something to
> look at too, I guess. thanks.

I had a frozen master cylinder once, when the fluid (and air from slack
bleeding) got hot it put the brakes on. Easy to check - just see if it rolls
on its own, but try it when brakes are warm.

Reply to this Message

circuit slave - 12 Feb 2006 07:00 GMT

Update ! Yay ! No more gas hog ! Turns out the TPS Switch on the
intake was waaay off and so I pulled the whole thing off the car,
(throttle body and switch) and cleaned it thoroughly and reset the TPS
to "click". Now it runs with acceleration zip and I have great
mileage! It really pays to clean all that gunk out of the throttle
body.

thanks again for all the suggestions !

Reply to this Message

Bill - 27 Oct 2006 20:55 GMT

Sounds like a vacuum hose is loose. I had the problem with an old 240
and it was blowing gas out the tailpipe, smoking and getting terrible
mileage. There was a vacuum hose that had come off and I put it back
on and that fixed it. Look around the top of the engine for it.

>I get like 10 miles to the gallon it seems! It wasn't like this a
>couple years ago. I don't really smell fumes and I don't use the turbo
[quoted text clipped - 8 lines]
>
>thanks

Reply to this Message

Rate this thread: