Two speed windshield wiper with one speed

[reubj]

The intermittent and slow speed work fine. When turned to "Hi" the speed seems to remain the same. Should I suspect the switch or the wiper motor?

Thanks.

89 MJ, 4.0 Renix, Wiper function switch on the column.

[Guest]

Sounds like the switch to me. If it were the motor, I doubt you'd have the arm functioning at all.

[onlyinajeep726]

Or the control module underneath the dash is going bad...

[redwolf624]

i'm havin the same problem but in a heavy rain on Hi you can notice a slightly faster blade movement than what low is,

 

Redwolf

[vfb]

On my old jeep, it's even weirder.

 

First, the wipers park halfway and not because they are in the wrong position. The actual wiping pattern is fine when they are on.

 

 And for some reason the hi and low are reversed. ie when I turn it to Hi, they go slowly and vice versa.

[Guest]

On my old jeep, it's even weirder.

 

First, the wipers park halfway and not because they are in the wrong position. The actual wiping pattern is fine when they are on.

 

 And for some reason the hi and low are reversed. ie when I turn it to Hi, they go slowly and vice versa.

Sounds like you might need to replace the wiper bushings on the linkage arms. IIRC, there's a write up in the DIY section on how to do this. The parts stores don't sell the bushings by themselves, they're in a pack with a lot of other styled bushings. Not too sure on why the wipers are reversed; could be that someone put the wrong type of switch into the column (perhaps).

[Rockfrog]

I have a brand new motor, new linkage bushings, and a good intermittent box.

There is still no discernable difference between high and low speed on my MJ, just something I had to get used to.

Going to try swapping a good 94 motor assembly and a 92 tilt column next (cheaper than replacing the current switch by three times cost).

I've heard of swapping to a 97 up motor get you actual speed differences.

Could all be corrosion related. Initially I had only slow and slower, after about a month of trying intermittent slowly started working again ( well, that and drilling the rivets out to clean and clear the inside of the module). Now it all function perfectly. ... other than the speed thing.