Gas Mileage on 940 Turbo

  • Thread starter Thread starter Dave Kaplan
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Dave Kaplan

Recently bought a 94 940 Turbo wagon (automatic). I am getting 13 MPG in
city driving. Jeez... This is like a Hummer!

I don't drive in the turbo range very often. I was expecting much better
from a four cylinder engine - even with turbo.

Is this typical?

Dave
 
Dave Kaplan said:
Recently bought a 94 940 Turbo wagon (automatic). I am getting 13 MPG in
city driving. Jeez... This is like a Hummer!

I don't drive in the turbo range very often. I was expecting much better
from a four cylinder engine - even with turbo.

Is this typical?

Dave
Click to expand...
I don't think so. Assuming it is similar to our '85 765T (the B230FT
engine), you should get mileage similar to ours: 20 mpg. I doubt you are
using it mainly for shorter trips than my 3 mile commute. Is the temperature
guage coming up to normal?

Mike
 
:Recently bought a 94 940 Turbo wagon (automatic). I am getting 13 MPG in
:city driving. Jeez... This is like a Hummer!
:
:I don't drive in the turbo range very often. I was expecting much better
:from a four cylinder engine - even with turbo.
:
:Is this typical?
:
:Dave
:
:

two successive '91 940Ts have delivered city from 18-21 mpg (winter
has alchohol mixed in - you can see the difference) and highway
21-23mpg. something is very wrong with your machine.
 
yea...you should be in the 18-23 mpg range...check for vacume leaks,
cracked turbo hoses...etc...then, do a std tune up...do you see any
black smoke while "stepping on it"?..
 
Dave said:
Recently bought a 94 940 Turbo wagon (automatic). I am getting 13 MPG in
city driving. Jeez... This is like a Hummer!

I don't drive in the turbo range very often. I was expecting much better
from a four cylinder engine - even with turbo.

Is this typical?

Dave
Click to expand...

Sure.
It's typical in the city ... where there's some little weasel
siphoning/stealing half of the gas out of your tank maybe.

Or it'd be typical if there were a rust perforation at the seam in the
tank causing you to lose a good portion out of every tankful ?

Otherwise, I'd say "Nope. Not typical."
 
i was gettin' miliage like that when i 1st picked
up my 93 940t...turns out, i had a cracked turbo
hose...making the car run varry rich...i has some black
smoke when i was stomping on it....it seemed to run
rough and rich, as well...anyway it was fine once i replaced
the hose...
 
Dave Kaplan said:
Recently bought a 94 940 Turbo wagon (automatic). I am getting 13 MPG in
city driving. Jeez... This is like a Hummer!

I don't drive in the turbo range very often. I was expecting much better
from a four cylinder engine - even with turbo.

Is this typical?

Dave
Click to expand...

Something is very wrong, you should be getting at least 18-20mpg around town
and mid 20's on the highway.
 
Dave Kaplan said:
Recently bought a 94 940 Turbo wagon (automatic). I am getting 13 MPG in
city driving. Jeez... This is like a Hummer!

I don't drive in the turbo range very often. I was expecting much better
from a four cylinder engine - even with turbo.

Is this typical?
Click to expand...

I was going to just jump in and quote the famous quip at you:

'Nobody ever bought a Volvo for the fuel economy'.

but then I converted your number (13 MPG) into my terms of reference and
found that it is over 18 litres per 100 km. I'm sorry to say that that
is shockingly high. Something is definitely wrong.

cheers,

Henry
 
i would guess $ on "cracked turbo hose"...how many
miles on the car...?

if over 100k.......i would guess hoses...hey, have you guys
priced those babys (turbo hoses) from a volvo dealer?...
they get, like $100 for each of the two big ones...some
special shapes and designs in them...i tried to use a
"getto", or home made one...it didn't work too well....the
motor really "sucks" and "blows" a lot of air through them..I
guess they need to be "just right" for the powerplant to
breath correctally....this sorta dove tails into the thread on
cone filters and the +/- of them.......outttt........

richard
colorado
still driving the %$#@ out of my 93 940t...i am seeing if i can
"drive though" my current auto tranny......it sure shifts nice
and smooth through the gears whilst under major boost
action...
 
~^ beancounter ~^ said:
i would guess $ on "cracked turbo hose"...how many
miles on the car...?

if over 100k.......i would guess hoses...hey, have you guys
priced those babys (turbo hoses) from a volvo dealer?...
they get, like $100 for each of the two big ones...some
special shapes and designs in them...i tried to use a
"getto", or home made one...it didn't work too well....the
motor really "sucks" and "blows" a lot of air through them..I
guess they need to be "just right" for the powerplant to
breath correctally....this sorta dove tails into the thread on
cone filters and the +/- of them.......outttt........

richard
colorado
still driving the %$#@ out of my 93 940t...i am seeing if i can
"drive though" my current auto tranny......it sure shifts nice
and smooth through the gears whilst under major boost
action...
Click to expand...
I have replaced all the turbo hoses (except the blue piece on the turbo
outlet) on our '85 765T. The turbo inlet hose (between the AMM and turbo)
was the first to go and had the fewest symptoms. Feeling the bottom of that
hose where it attaches to the turbo revealed a very soft spot that
eventually just melted away. $150 US got me a replacement from Volvo, but I
hear they are around $200 US now. The others, on the pressurized side of the
turbo, produced a distinctive symptom when they failed. Acceleration was
just fine until the turbo started spinning, then the mixture became
extremely rich and power dropped to nearly nothing... magically restoring
when the turbo spun down.

I think the entire cost of the turbo hoses was about $300 US, all told.
Labor is trivial. I would have been better off to replace all the black
hoses at the same time rather than to let my wife be basically stranded
several times. The failures all came around the 200K mile mark.

Mike
 
I had an 86 Jetta GLI that only got about that kind of gas mileage driving
it around SF...most trips were never over 5 miles. When I did take it out to
the highway the gas mileage would return to the normal ~30mpg.
 
yea...i was told they 1st "go soft"...i guess
it isn't long from there.....it is important they
reatin their diminsions...i guess to keep the
air/fuel in "tits" shape........
 
~^ beancounter ~^ said:
yea...i was told they 1st "go soft"...i guess
it isn't long from there.....it is important they
reatin their diminsions...i guess to keep the
air/fuel in "tits" shape........
Click to expand...
Holes are the real problem, since they change the AMM reading from the air
really going into the engine. The turbo inlet hose can reduce the measured
air into the engine as outside air is sucked in, but the hoses on the outlet
side leak already-measured air to the outside world and make the AMM report
more air used than goen into the engine. Of course, the ECU adds
proportionately more fuel. One would think this only affects the mixture
when running boost in the manifold, but it actually occurs when the turbo is
pressurizing the ducts, whether the extra pressure is allowed past the
throttle into the manifold or not. It's hard to get over 40 mph or up any
hill at all under those conditions.

Mike
 
get a Volvo tune up don't bother going to the $$$$$experts go to you small
Volvo mechanic its cheaper and they know Volvos
 
i agreee w/john.....i have had
better luck w/independents...heck, the
guy i go to now lets me hang out in his
shop and "help"....but, i still can't touch
his tools....he knows volvo's inside
and out...
 
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