1992 740 Shift Lock Button Sticks (esp when cold)

rob2volvos · Post by **rob2volvos** » 15 Sep 2012, 17:30

I have an annoying issue with a 1992 740 (Regina, No turbo) -- the shift lock button sticks occasionally, preventing shifting out of park. The FAQs here do have quite a bit of info on this, I know:
http://www.brickboard.com/FAQ/700-900/T ... gOutofPark

I'm not sure if a microswitch and / or relay is involved in shift-locking on this model (I don't think so). So I rather suspect it's the solenoid itself. I crawled around under the car last weekend. The wiring to the solenoid seems OK.

However, my distinct impression is that this problem on the car is much worse in cold weather -- and I haven't seen that mentioned anywhere. Does this help to diagnose the problem, anyone? How should I best troubleshoot?

Thanks,

Rob

lummert · Post by **lummert** » 15 Sep 2012, 21:41

I think you may be confusing the overdrive solenoid with the park lock solenoid. The park lock solenoid is attached to the shifter under the console.

rob2volvos · Post by **rob2volvos** » 16 Sep 2012, 08:43

Yes, I was wondering about that -- Thanks for clarifying at least that much (ie that I'm confused). I googled on 'shift lock solenoid' and came up with this:
http://www.justanswer.com/volvo/4pxfi-1 ... verse.html
So now I glean there is a solenoid and an associated relay -- I'll continue digging on those. I'm looking for links that spell out how to dismantle the console on a 740.

Rob