|
I had the same problem with my 84 240- when it dipped below 50 F, the clock would slow or stop. I pulled the clock out and tried cleaning it- don't waste your time. The problem lies in the capacitors. These are the two silver cylinders soldered onto the small circuit board inside the clock. Having done electrical component repairs, I takeled the task and it works- even severe cold up here in northern Idaho can't stop it. The fix is easy:
Items you'll need:
solder gun, thin solder, solder wick (aka solder braid), 2 120 microfarad capacitors (I think, its been a while since the repair-I'd take the two capacitors in there to an electronics repair shop and have them test them to be sure)
Procedure:
Remove the clock from the instrument cluster and the two flat head screws from the back. Place the solder wick on the solder bead that is on one of the electrical terminals on the back of the clock, then place the heated solder gun ON TOP of the wick- the solder will be sucked up into the wick... remove the solder wick and gun at the same time. Remove the plastic backing of the clock. Locate the two capacitors (mine were silver with some red writing on the top. Place the solder wick on the back side of the electronic board and repeat the process above to remove the capacitors. Once the solder is removed from the capacitor legs, they can be pulled out of the holes. With the new capacitors in hand, locate the negative side of the capacitor (indicated by a series of "-" signs on the side of the new capacitor). Place the capacitor in through the holes paying close attention to the polarity- the positive leg should go through the hole where there is a "+" mark on the bottom side of the electronic board (I believe mine had a + mark only). Drop a bead of solder on each leg on the under side of the board, cut off any excess leg. Repeat for the other capacitor. DOUBLE CHECK THE POLARITY. Put the plastic cover back on and the male terminal back over the pin that sticks through(the one you removed the solder from at first). Drop a bead or two of solder on the shaft making sure it contacts the male terminal. put the two screws back in, connect the two wires and reinstall in instrument panel. Voila, it should work rain or shine, hot or cold.
If you have any questions, don't hesitate to contact me.
Mike
84 240 221500 mi
|
