Overdrive problems again - j sweet help?

Hello,

Have gone back and read threads on o/d problems from the recent past
and have seen jsweet's advice in particular.

Details: '92 240 wagon, 150k miles. Everything working fine but
overdrive. (automatic for the record)

Replaced solenoid; rusted out and a mess. I have a good volvo only
mechanic who said he never saw an overdrive *not* come back with a new
solenoid. We also checked switch, relay, wiring, etc. and everything
there is fine. Using o/d switch on/off , we can hear click inside, and
solenoid clicking under car. So, at this point, we're assuming its not
electrical. As a last resort before possible transmission replacement,
mechanic suggests taking vehicle to a place that can do a "pressure
flush" of transmission and then replace fluid.

Btw, the overdrive has come back maybe a half dozen times on the
highway at around 60-65 mph and car drove fine until I got off
highway, stopped and re-accelerated at which point it went back to no
o/d. Any thoughts?

Thanks!

 

When flushing the old fluid try removing the sump plate and cleaning the
filter screen and making sure that the valve ports are clean. Remove any
dirt from the solenoid ports and replace the two little O-rings, then fill
with fresh clean fluid of correct spec.

All the best, Peter.

 

Since it works when you at higher speeds, and you stated that the
solenoid was a rusted out mess it probable was not used for some time.
It probably has a lot of gunk, crud, etc. in it. These work off an
internal fluid pump like an oil pump and I suspect that there is
enough of this filth blocking passages or the sump screen that it only
works at higher speed when the fluid has gotten hot and the pump is
working harder (faster) then usual. I would recommend any sort of
flush or pressure washing that the mechanic recommends. If it begins
working better after that, run it for about 100 miles with regular use
of the OD, and then change the fluid again.

__ __
Randy & \ \/ /alerie's
\__/olvos
'90 245 Estate - '93 965 Estate
"Shelby" & "Kate"

 

I'm sure the mechnic checked but to be sure,

is the downshift cable "working" correctly as opposed to "adjusted"
correctly?

Duane

 

Thanks to everyone who replied. Off to the pressure flush we go.

 

There was a post sometime ago that stated that if you remove the
solenoid the center O-Ring & with a very good die grinder make a notch
on the inside of the solenoid where the center O-Ring sits & the outer
this suposeldy will give you overdrive without the electronics I can not
state weither this works or not have not had any older cars to try this
on my self to verify

--
"*-344-*Never Forgotten"
Is for the New York City Firemen who lost their lives on September 11,2001.
The official count is 343, but there was also a volunteer who lost his life
aiding in the initial rescue efforts. And I will never forget them as
long as I live,
nor should any American.