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oldy57
New User
Aug 25, 2011, 11:59 AM
Post #1 of 8
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92 S10 Wipers Won't Park
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I have a 92 S10, 4cyl, 5 spd, 214k. When I bought it the wipers would stop when shut off and won't go to the down position. I was told the motor was the problem. I bought and installed a new one and same thing. The wipers are not delay. I asked a few shops and they say they don't know what could be wrong. I asked my local GM dealer and they think it could be the circuit board in the motor. There is no access to the motor and it doesn't look like there is a place for one. The delay wipers have a circuit board but not this one by the looks of the motor. What makes the motor continue t the bottom position. Could it be the wiper lever or the wires inside the steering column. The wiper switch has the turn signal, wipers and bright/dim lights in it.
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Discretesignals
Ultimate Carjunky
/ Moderator
Aug 25, 2011, 12:31 PM
Post #2 of 8
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Re: 92 S10 Wipers Won't Park
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Unplug the wiper motor connector and check for power on the white wire with the ignition on. The white wire is for the park switch circuit in the motor. When the wipers are turned off power flows through the park switch running the wiper on low until the switch is mechanically opened. When the switch is opened the wipers should stop in the park position.
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
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oldy57
New User
Aug 25, 2011, 12:46 PM
Post #3 of 8
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Re: 92 S10 Wipers Won't Park
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I checked and the white wire has power. The wipers still stop anywhere.
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Discretesignals
Ultimate Carjunky
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Aug 25, 2011, 1:04 PM
Post #4 of 8
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Re: 92 S10 Wipers Won't Park
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Make sure the wiper motor ground strap is clean and tight. If that is good, there is a problem with the park switch or cam/actuator arm inside the wiper motor.
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
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oldy57
New User
Aug 25, 2011, 1:23 PM
Post #5 of 8
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Re: 92 S10 Wipers Won't Park
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I grounded it again with another wire and the motor works the same, just won't park. The motor is new, maybe 2 minutes use. I tried the old motor and it is the same. The motors are sealed, no access to the inside unless I break the plastic cover off. Maybe the new motor park actuator is not good.
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Tom Greenleaf
Ultimate Carjunky
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Aug 25, 2011, 1:51 PM
Post #6 of 8
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Re: 92 S10 Wipers Won't Park
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Watching this and don't have too much to add. Motor is rubber mounted so body of motor itself needs ground and test it back powering a simple test light.
Just some thoughts: This (1992) shouldn't have tons of rocket science in it.
Just a question for the moment as I have always had luck when a motor refuses to "park" with another one but almost all had the delay feature - want to know if asking for the washers prompts the motor to run so many cycles then quit on this and park.
Is the washer power from the wiper motor or a separate electric motor for this? Back when motor was the source of power they had to be "clocked properly and could be a pita if just fixing the wash feature,
T
(edit just to spell check which I forgot to do)
(This post was edited by Tom Greenleaf on Aug 25, 2011, 1:52 PM)
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oldy57
New User
Aug 25, 2011, 2:20 PM
Post #7 of 8
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Re: 92 S10 Wipers Won't Park
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The motor is rubber mounted, the bolt that mounts the motor to firewall has a ground strap, it is good and grounds good.
The washer pump is a separate motor and works.
I did not try the washer/wiper to see if it works for a few seconds and turns off.
The washer tab on the turn signal lever has an arrow pointing down and when engaged it would go to the wiper low position and then back to off. The washer does not work going down. the wipers don't come on. If I turn washer up it sprays, the wipers turn on in the "on" position and stay on. I did not think when I used the washer that I was turning it up away from the arrow. I would guess the wiper switch is bad. Any thoughts. Where would I get a switch. I would think GM is very expensive.
I am not sure if this will fix the Park positioning.
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Discretesignals
Ultimate Carjunky
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Aug 25, 2011, 3:01 PM
Post #8 of 8
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Re: 92 S10 Wipers Won't Park
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Make sure that your motor is grounding to the engine. Check your ground straps from the engine to the body. You can also measure the voltage drop from the wiper motor case to the negative battery terminal. Red lead on wiper motor ground strap and black lead of meter on negative post of battery with wiper running. If your meter reads more than .5 volt, you have a grounding problem.
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
(This post was edited by Discretesignals on Aug 25, 2011, 3:03 PM)
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