I had intermittent problems with the OD engaging so I looked at the relay, whose solder was cracked and missing in one spot. I replaced it, and got my OD back and working for 4 days; then the dreaded OD arrow came on and will not go off. There must be a new problem.

I'm hunting down a used solenoid and I'll check the wiring over the weekend. But in the meantime, is it OK to drive around (and to work) with the overdrive engaged?

It's probably just a bad relay ... I've seen a couple go bad in the last 100k miles.

Just what I wanted to hear. Thanks guys.

Klaus nailed it - arrow just means you have OD disengaged. No big deal, I drove for 6 months like that. I wouldn't be afraid to do 70/75mph sustained, you'll just have more noise, crummy milage, and over the long term, more engine wear.

Forget the solenoid, buy IPD's bypass plate or make your own - how often do you disengage the OD anyway?
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Sean - now frolicking in the Land of a Thousand 240's (aka, Fredericksburg) thrice a week.

Actually, when the arrow is on, the overdrive is disengaged. That means you will not get 4th gear. Drive all you want, you just pay more when you get gas.

Klaus
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1975 164 w/174,800mi (Sold) 1995 850T w/91,000mi, 1998 V70R w/129,000mi