Windshield wipers wipers work then shut off after short time. will restart again if you turn them off for awhile.what prt needs replaced? motor timer circuit board?

It should be a short circuit or a bad relay. Good luck.

So that wipers park properly, the wipers have 2 power sources. One is from the dash switch to turn the wipers no and off, but the second is the parking power, which is always supposed to be on. The parking power is supposed to be shut off by a rotating cam inside of the wiper motor housing itself. If you don't want to take it out and fix it, you could always just pull the parking wire to the wipers, and then try to manually park them by shutting off the wipers at exactly the right time.

When the windshield wiper / washer switch is turned to the OFF position while the wiper motor is somewhere in mid-cycle, the wiper motor module will continue to operate the wiper motor until the wipers reach the park position. If the ignition is turned off while the wipers are in mid-cycle, the wipers will stop immediately where they are. The wipers will park the next time the ignition is cycled to the ON position.

Schematic Reference: Wiper/Washer Schematics


1

Did you review the Wiper/Washer System Description and Operation and perform the necessary inspections?
Go to Step 2
Go to Symptoms - Wiper/Washer Systems

2

1. Turn the ignition ON.
2. Turn the windshield wiper/washer switch OFF.

Are the windshield wipers always on?
Go to Step 3
Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

3

Disconnect the windshield wiper/washer switch connector.
Are the windshield wipers always on?
Go to Step 4 if yes
Go to Step 7 if no

4

1. Disconnect the windshield wiper motor connector.
2. Test the windshield wiper switch signal 1 circuit for a short to voltage. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.

Did you find and correct the condition?
Go to Step 11
Go to Step 5

5

Test the windshield wiper switch signal 2 circuit for a short to voltage. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.
Did you find and correct the condition?
Go to Step 11
Go to Step 6

6

Test the windshield wiper motor high speed circuit for a short to voltage. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.
Did you find and correct the condition?
Go to Step 11
Go to Step 9

7

Inspect for poor connections at the windshield wiper/washer switch. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs in Wiring Systems.
Did you find and correct the condition?
Go to Step 11
Go to Step 8

8

Replace the windshield wiper/washer switch. Refer to Windshield Wiper and Washer Switch Replacement - On Vehicle in Steering Wheel and Column.
Is the repair complete?
Go to Step 11
--

9

Inspect for poor connections at the windshield wiper motor. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs in Wiring Systems.
Did you find and correct the condition?
Go to Step 11
Go to Step 10

10

Replace the windshield wiper motor. Refer to Windshield Wiper Motor Replacement .
Is the repair complete?
Go to Step 11
--

11

Operate the system in order to verify the repair.
Did you correct the condition?
The Wiper / Washer System consists of the following components:
?€¢
Windshield wiper / washer switch

?€¢
Windshield wiper system module / motor

?€¢
Windshield washer fluid pump

?€¢
Windshield washer fluid level switch

?€¢
Instrument panel cluster (IPC)

?€¢
ACC 15-amp fuse

?€¢
WSW 30-amp fuse

if the motor is ok, then the switch must be faulty, change the wiper switch.

It's the switch that you turn on,it's bad.

a known problem with GM wiper motors were the circuit boards which may be replaced seperate on some models. also would cause what we call a park issue meaning not stopping at bottom of the windshield. hope this helps.

Turn wipers to off then turn the car off. We have the same problem in our 1986 Pontiac parisienne brougham

First of all disconnect the motor before you change the fuse and then try it out. If the fuse blows out hten you have a fault in the line that goes through the harness. If you are not able to isolate the line cut off and use a new line to the motor. However if the fuse stays fine the it is confirmed that your motor is short. You will need to remove the wiper motor unit and check inside for a short in the motor winding or the cummutators. USe a ggood multimeter to see for short and if it has burned then you will need to replace or rewind as acordingly to the cost feasibility. If the motor was stuck due to a damaged spiral gear or the drive wheel replace and proceed. Hope you try this out one by one. Good day

Wiper motor rarely goes bad, and a second one going bad as well is extremely rare. What will burn out a motor is very high resistance to movement from the wiper assembly. Do the following: Take out the wiper motor, and move the wipers by hand to see if they are hard to move, or if the arms (rod mechanism) are rubbing against anything. Do this with the blades in normal position, resting against the windshield. Pour water unto windshield while testing it, to avoid scratches. One telltale sign for this condition, is the wipers going too slow before complete stoppage. Either that, or an electrical connection leading to the wiper motor, for that simply check that there is electricity in the wiper motor connector when wipers are activated.

the only thing i can say is the timer in the wiper motor is going bad and will not shut off. change wiper motor.