Engine oil question for Volvo 850 (1994)

Hi, my friend has a Volvo 850 (1994) and when we were driving for a
vacation the other day, he suddenly found out that his engine oil
level was low (the warning indicator was lit) so we pulled over at a
gas station. We then checked with the oil level and it was indeed
extremely low. We then bought 4 bottles of engine oil and pour them
in.. only to find that now that the engine oil level was way too high
(about 1/4 inch higher then the maximum mark)...
My questions:

1. Does this matter? Would this kind of "high" engine oil level has
any bad effects for the engine and the car??

2. If it does not really matter, should I still go to a regular "oil
change" garage to replace all the oil?? That is, should I get someone
to drain the old and dirty engine oil and replace with another 3-4
bottles of new engine oil??

Thanks!

 

Does anyone know how i can adjust a 1994 940gl idle speed. I have set
everything to spec, including the base idle and microswitch, and the
throttle body and idle stepper motor have been cleaned, but it still idles
too slow. THe motor still drives ok and doesnt lack power or blow smoke.

It never stalls or has any hunting or unusual behaviour, and the idle will
adjust when load is placed (such as a/c) but it simply idles too SLOW. And
therefore the motor vibrates, making an otherwise pleasant car to drive seem
quite primitive. I have tried simply re adjusting the throttle spindle stop
out of spec - to make the minimum idle speed higher, but that had the effect
of making the idle speed erratic.

I have been led to beleive that the idle is not adjustable, and set by the
bosch engine controller at the factory to a very low 650 to 750 rpm. About
half the time it seems to idle ok (not as smooth as i would like but i
wouldn't be complaining now if it was like that all the time), the rest of
the time it is too slow and make everything in the car vibrate. I cant put
my finger on any particular cause (like after a long drive or idling for
too long), it just seems to drop off by about 50 rpm and vibrates.

Also, If there isnt any particular fix or reason for this problem, does any
one know of any way to trick the computer to increase the idle speed or to
activate the stepper motor just a little bit more - therefore increasing the
idle speed.

Ps. I think it is interesting that my 85 240gl with the same motor but
older (adjustable idle speed) feul injection system has an idle speed of
950rpm. It makes me think that the lower speed on the newer car is too low
& set that way for feul or emissions reduction

 

Do a regular oil and filter change in the garage. The oil has to be between
two marks on the stick.

 

In my opinion, I would replace all oil AND the oilfilter.

When the level is too high, you have put too many oil in.
The little risk that comes up with that, is that when the engine reaches
certain temperature, the fluids will increase (volume) and it CAN be (but
that's not for sure) that the engine will "sweat"oil due to the pressure
that was built in the engine.
Or another way to explain: the oil that is too much will squirt out.

Anyway, when you put a little too much oil in, it will not be dangerous. My
advise is to do a quick check with some dealer / garage.

PS: my native language is not English, so when I have written some awful
sentences up here, please forgive me.

MayDay

 

Look for the same idle adjustment as on the 240, a big-ish turnbuckle near front
of inlet manifold or clean out the Idle Air Control Valve.

Cheers, Peter.

: Does anyone know how i can adjust a 1994 940gl idle speed. I have set
: everything to spec, including the base idle and microswitch, and the
: throttle body and idle stepper motor have been cleaned, but it still idles
: too slow. THe motor still drives ok and doesnt lack power or blow smoke.
:
: It never stalls or has any hunting or unusual behaviour, and the idle will
: adjust when load is placed (such as a/c) but it simply idles too SLOW. And
: therefore the motor vibrates, making an otherwise pleasant car to drive seem
: quite primitive. I have tried simply re adjusting the throttle spindle stop
: out of spec - to make the minimum idle speed higher, but that had the effect
: of making the idle speed erratic.
:
: I have been led to beleive that the idle is not adjustable, and set by the
: bosch engine controller at the factory to a very low 650 to 750 rpm. About
: half the time it seems to idle ok (not as smooth as i would like but i
: wouldn't be complaining now if it was like that all the time), the rest of
: the time it is too slow and make everything in the car vibrate. I cant put
: my finger on any particular cause (like after a long drive or idling for
: too long), it just seems to drop off by about 50 rpm and vibrates.
:
: Also, If there isnt any particular fix or reason for this problem, does any
: one know of any way to trick the computer to increase the idle speed or to
: activate the stepper motor just a little bit more - therefore increasing the
: idle speed.
:
: > Thanks.
: >
: Ps. I think it is interesting that my 85 240gl with the same motor but
: older (adjustable idle speed) feul injection system has an idle speed of
: 950rpm. It makes me think that the lower speed on the newer car is too low
: & set that way for feul or emissions reduction
:
: