I have a 1990 Cherokee. the wiper motor only seems to have one speed. when I click it over to the faster setting I do not see a difference. the intermittent function works it just seems it only has one speed. is this the wiper motor, the switch or something else.

 

I noticed the same thing yesterday, however my voltage was kind of low (due to my idle being around 500rpm) when I push the pedal a bit and got around 1000rpm, then there was a difference between low and high.

 

Doesn't seem to make a difference no matter what RPM im at. thanks

 

Clean the ground connections on the driver's side inner fender. Scrape the paint off underneath them.

 

I upgrade to 97 plus motor had to rewire some but big difference .

 

Do a write-up on it.

 

They bolt on but you have to wire it differently how?

 

Yeah, and what's the big difference?