Windshield wiper only has two speeds

[Reyyyyab]

I bought a new windshield wiper motor because it didn’t come with one when i bought the car. & turns out it just has 2 speeds. & the highest speed is still super slow. What can i do to fix this problem?

 

[STEVE PATTON]

First disconnect the arm from the motor and see if the linkage is free. Then check motor with a known 12V source. You're 2 speeds should not be slow & slower.

 

[90sickfox]

What year is your mustang?

 

[2000xp8]

Electrical - Windshield Wiper Problem

I am having a problem with my windshield wipers, I have checked the fuse's they are all good, changed the multifunction switch three times, changed the wiper motor three times, and I have changed the intermediate box under the steering column twice to no avail..same outcome to which I started...

www.stangnet.com

Most electrical info here comes from jrichker.
His first reply gives you the test method

 

[Reyyyyab]

What year is your mustang?

1989

 

[90sickfox]

Check the connector for the switch on the column. I've had bad connections there cause the same type of issue. Also, as mentioned, make sure the linkage moves freely with motor disconnected.