Very good question! This is the sort of thing that I play with when I find it, which I haven't yet on the 164. You will need to do a little homework (that I haven't done) to find where the variable delay takes place - I think that the stalk has a variable resistor (single yellow (?) wire to the wiper motor), and the wiper motor has the delay circuit. If this is the case, then you would need to increase a resistor value in the delay circuit so as to increase the time that it takes for the relevant capacitor to discharge, as that will be what gives the time delay between wipes.The slowest delay on my 91L is about 1 second. This is way too fast for most conditions I drive in. Is there anyway to increase the delaytime?
Yes - sorry that I wasn't as helpful as I wanted to be, because having started on the post, I realised that my photos/wiring diagram of the wiper motor circuit were for a Lancia Thema, which is a similar car but the wiper is one of a few things that are different!Thanks for the advice. I'm not real big into electrical stuff at this level. I can find a resistor and a capacitor on a board, but not too sure I want to get involved at that level. Probably a used wiper motor makesthe most sense.
I think, rather than the speed, we were talking about the intermittent delay. Rotating the stalk provides five positions. Are you saying that there are five wires - one for each delay setting? Does the diagram show a resistance in the stalk or a five-position switch (in addition to the three-position switch for the speed selection that you mentioned).According to the wiring diagram, the intermediate wiper speed is controlled by the steering column mounted wiper stalk control switch (B2). The selected setting (position 1, 2, or 3) is sent to the motor (P27). ,
Thanks for looking those up.The colors at the motor are, in order, black, gray, light blue, purple, gray, black, pink/black, white/black. The matching colors at the stalk are: P1 = light blue, P2 = gray, black, pink/black, P3 = purple, gray.
I still think the pulses originate not from the switch, but instead from the circuit board/relay within the motor assy.Then the motor waits for the next initiating pulse from the stalk control switch. If the timed pulses are as you would expect, then it would appear the problem is with the motor swash plate control assy. I suspect you would have to obtain another motor assy, as these swash plate assys do wear out with time.
Thanks for the clarification, I follow now...
Ah, now looking at the parts eper disc, I see that there is a module which connects to the motor/gearbox assy which is called the intermediate (speed) switch. That must be the controller. Well, I guess I forgot about that. You may not be able to fix that, so a used motor/controller assy may be in your future.