auto tranny wont shift into OD

Relay and wire to soleniod seem ok. I might try to replace soleniod and see
if that fixes it. bk.

 

Relay and wire to solenoid seem ok. I might try to replace solenoid and see

Solenoids are expensive. Run a fused line directly to the sol. Overdrive
(fourth gear) works when the sol picks up and lets oil flow. A solenoid is an
electro-magnet operated valve. The coils usually fail by shorting out
internally. These turn-to-turn shorts reduce the number of turns in the coil
and the magnet gets weaker. When the one on my 86 240 failed it would work for
a while, then drop out after it heated up.
I bought a "New" one from an unnamed Volvo dealer in West Palm Beach. The
package was opened and the "O" rings were missing, but it couldn't be a return
because they don't allow returns on electrical parts.
Well I was desperate so I took it anyway. It fixed the problem.
But when I took the old one out, I realized that I didn't need a new one. I
live in flat south Florida. I never turn OD off.
Next time I'll;
· Cut off and tape the wiring.
· Throw away the inner O ring.
· Cut (grind) a groove between the two holes
· And re-install the "repaired" solenoid.
That will bypass the solenoid and I'll have a 4 speed.

Do you ever take it out of overdrive?
If not, Bypass the solenoid and forget about it.

Al




Had
79 245 D,
81 240 D,
86 240 320,000mi and running fine when traded
94 944 Green 257,503 mi CRUNCH Parted out
Have
94 944 White 149,000 The New one
94 944 Maroon 135,000 mi