Turns out my wiper motor is dead. Also turns out I am dirt pior.
I see wiper motors and refurbish services for $250-400. I see a 1968 motor online for $50ish. I cannot seem to spot a difference. The guts, wiring, plastic gear, shape, 3 terminal, etc
, all look like a 66. There must be some difference, anyone mind tellinf me why a 68 motor won't fit 66 impala?
Difference will be in less wear and tear and the build date. Otherwise GM used basically two different wiper motors for decades the round motor and the square motor. They are interchangeable and all bolt up using the same three screws to bolt the motor to the fire wall.
Because of differences in windshields the arm that bolts to the motor differs but it is held in place by only one nut and all use the same size shaft (there is a difference in the threads on the motor's drive shaft on newer cars as they went Metric in the early eighties, but you can reuse the metric nut).
If it has pulse wiping function as an option you will not be able to access those features, as your switch is basically an on-off arrangement with the possibility of two speeds.
Last edited by Big Dave; 04-29-2014 at 09:15 AM.
Reason: To many fingers on key board at once, I use one typing finger
I bought the 68 motor. It bolted up perfectly, the 66 washer pump fit it. The electrical connections all plugged up perfect. Turned it on, works perfectly. The only difference, the nut from my 66 wouldnt fit, but the 68 came with one.
I turned in the 66 motor as a core, total cost was around $57.
Just an update for anyone with a 65,66,67 in need of a wiper motor and not able to pay hundreds.