AW70 on last legs

Otto Mattik · 05-19-2017, 05:31 AM

92 240 wagn 230k mi AW70

I purchased wagon for a low price over a year ago, knowing the tranny was failing & have since flushed it 3 times and added Lucas. My point is, lately it has gotten a bit worse during the 2 to 3 shift and it doesn't want to stay in overdrive or jumps back into 3rd on the slightest incline.

Any chance the overdrive solenoid could be part of the problem ?

* I've been looking for a "known" AW71 but no luck, and found an AW70 from a rear ended car w/ 93k mi. But still hoping for an AW71

John242Ti · 05-19-2017, 06:37 AM

Is the kickdown cable binding or out of adjustment? That's what I'd check.

-J

coalminer · 05-19-2017, 11:00 AM

You flushed it 3 times and added Lucas?

Did you also clean/change the oil strainer in the pan?

I would also try a different overdrive relay.

Checking the kick down cable is a good idea too.

Does the transmission slip, or merely have problems shifting and staying in gear?

Khrrck · 05-19-2017, 12:15 PM

I've had overdrive issues before, the only symptom (presuming the solenoid is the only point of failure) is that the transmission will never shift into 4th.

ZVOLV · 05-19-2017, 02:53 PM

Try a new kickdown cable first. Mine was acting similar. Slipping, usually no OD...kickdown cable fixed it.

Otto Mattik · 05-19-2017, 10:50 PM

Thanks gents,

the PO had kickdown cable replaced at a local Volvo dealer (like many other parts).

I don't know much about kickdown cable, but will investigate (Slipping occurs mainly on 2 to 3 shift).

* First flush produced a nasty grey/brown color. 2nd flush was much better. 3rd flush was conversion to Dex VI & result is bottom end torque improved

Otto Mattik · 05-19-2017, 10:54 PM

Quote:

Originally Posted by coalminer

You flushed it 3 times and added Lucas?

Did you also clean/change the oil strainer in the pan?

I would also try a different overdrive relay.

Checking the kick down cable is a good idea too.

Does the transmission slip, or merely have problems shifting and staying in gear?

* Have not done pan/filter, but found records of PO having it done in past
* Slips on 2 to 3 shift and wants to jump back to 3rd gear on slightest incline

Otto Mattik · 05-21-2017, 12:55 AM

Yep thanks gents !

I created some slack on kick down cable & things instantly improved ! After a test run I did a bit more, & even better. First try I created apprx 1/4-3/8" slack, then next time another 1/8". 2 to 3 shift slip also improved (or was it rainy weather helped cool trans ?)

ZVOLV · 05-21-2017, 01:40 AM

One could check pressures.

Otto Mattik · 05-22-2017, 01:59 AM

ok researching thanks

DET17 · 05-22-2017, 06:42 AM

Exact specs for that trans. cable adjustment (as you have learned, it matters) can be found on the UK Volvo 700/900 Maint. Pages. Adjusted mine 5 years ago, never had to touch it. You can also find the direct link near the top of the BB homepage.

ZVOLV · 05-22-2017, 09:45 AM

Quote:

Originally Posted by ZVOLV

One could check pressures.

I haven't done much of it myself, but there are threaded test ports on the side of the transmission to test the pressures.

Otto Mattik · 05-23-2017, 02:42 AM

Quote:

Originally Posted by DET17

Exact specs for that trans. cable adjustment (as you have learned, it matters) can be found on the UK Volvo 700/900 Maint. Pages. Adjusted mine 5 years ago, never had to touch it. You can also find the direct link near the top of the BB homepage.

Thanks, after a third adjustment (created slack) a grand total of 1/2-5/8" the car has no downshift issues(*also not certain but it seems to have stopped slipping ? Or possibly something else going on)

A) I suspect that the downshift cable may not have ever been adjusted properly (?)
B) I tried downshift button, & it still works perfect

THANK YOU

Otto Mattik · 05-23-2017, 02:43 AM

Quote:

Originally Posted by ZVOLV

I haven't done much of it myself, but there are threaded test ports on the side of the transmission to test the pressures.

OK, yep saw that, looking into it. Thanks for advice on kickdown, made all the difference !!

Otto Mattik · 05-23-2017, 02:56 AM

Quote:

Originally Posted by John242Ti

Is the kickdown cable binding or out of adjustment? That's what I'd check.

-J

Thank you

ZVOLV · 05-23-2017, 03:56 PM

Quote:

Originally Posted by Otto Mattik

Thanks for advice on kickdown, made all the difference !!

Great! My 86 740 still shifts great and doesnt slip a year later after I replaced my kickdown cable. The lube goes away in the sheath and they can bind. I recommend blasting oil down in it if you decide not to replace it.

KeizerBrickGuy · 05-23-2017, 04:19 PM

Quote:

Originally Posted by ZVOLV

I recommend blasting oil down in it if you decide not to replace it.

^This.
I do that once a year with some decent spray lube.

Otto Mattik · 05-24-2017, 01:03 AM

Thanks I will do the lube as well

05-19-2017, 06:37 AM	#2
John242Ti manofewords Join Date: May 2003 Location: Duvall, WA	Is the kickdown cable binding or out of adjustment? That's what I'd check. -J __________________ 1982 242Ti - black, M46. 1985 245Ti - blue, M46. 1989 745Ti - red, Aw71. Formerly Blue245Ti, 245GT-Turbo, and, originally 242GT-Ti.

05-19-2017, 02:53 PM	#5
ZVOLV <Master Tech> Join Date: Nov 2002 Location: California	Try a new kickdown cable first. Mine was acting similar. Slipping, usually no OD...kickdown cable fixed it. __________________ No Start Thread

05-22-2017, 06:42 AM	#11
DET17 Reformed SAABaholic Join Date: Nov 2009 Location: NW Georgia	Exact specs for that trans. cable adjustment (as you have learned, it matters) can be found on the UK Volvo 700/900 Maint. Pages. Adjusted mine 5 years ago, never had to touch it. You can also find the direct link near the top of the BB homepage. __________________ Project "cheap thrills" build thread: http://forums.turbobricks.com/showth...67#post4211467 Feedback thread: http://forums.turbobricks.com/showthread.php?t=198746

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05-19-2017, 11:00 AM	#3
coalminer Board Member Join Date: Mar 2013 Location: North Georgia Mountains	You flushed it 3 times and added Lucas? Did you also clean/change the oil strainer in the pan? I would also try a different overdrive relay. Checking the kick down cable is a good idea too. Does the transmission slip, or merely have problems shifting and staying in gear?

05-19-2017, 10:50 PM	#6
Otto Mattik Board Member Join Date: Dec 2015 Location: At work or under a car	Thanks gents, the PO had kickdown cable replaced at a local Volvo dealer (like many other parts). I don't know much about kickdown cable, but will investigate (Slipping occurs mainly on 2 to 3 shift). * First flush produced a nasty grey/brown color. 2nd flush was much better. 3rd flush was conversion to Dex VI & result is bottom end torque improved

05-21-2017, 12:55 AM	#8
Otto Mattik Board Member Join Date: Dec 2015 Location: At work or under a car	Yep thanks gents ! I created some slack on kick down cable & things instantly improved ! After a test run I did a bit more, & even better. First try I created apprx 1/4-3/8" slack, then next time another 1/8". 2 to 3 shift slip also improved (or was it rainy weather helped cool trans ?)

05-21-2017, 01:40 AM	#9
ZVOLV <Master Tech> Join Date: Nov 2002 Location: California	One could check pressures.

05-22-2017, 01:59 AM	#10
Otto Mattik Board Member Join Date: Dec 2015 Location: At work or under a car	ok researching thanks

05-24-2017, 01:03 AM	#18
Otto Mattik Board Member Join Date: Dec 2015 Location: At work or under a car	Thanks I will do the lube as well