Author Topic: Washer pump  (Read 331 times)

Offline Burkhalter

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Washer pump
« on: April 04, 2019, 01:18:47 PM »
I'm having troubles figuring out where my issue is with my washer pump. Initially I replaced the pump itself that did not fix it so I tore into the stearing column, removed the washer wiper switch tested it. It works. Asked my grandfather if he had any issues with it and he said it has worked intermittently since about 01 or 02. I don't have any blown fuses. It's an 85 k10.
'85 Chevy K10 361ci sm465

Offline Burkhalter

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Re: Washer pump
« Reply #1 on: April 04, 2019, 02:58:26 PM »
I think that I've found my faulty part. Now I need to what this is called.

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'85 Chevy K10 361ci sm465

Offline Burkhalter

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Re: Washer pump
« Reply #2 on: April 04, 2019, 03:04:45 PM »
Ohms reading and the blown diode?

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'85 Chevy K10 361ci sm465

Offline MIKE S

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Re: Washer pump
« Reply #3 on: April 04, 2019, 06:33:26 PM »
That is the wiper delay module. GM part # 15598496. Gm is currently out of stock but my locator shows many dealers that have them. Have you tried bypassing the module and plugging the two connectors together. I believe you can and it should work except for the delay portion.

Offline Burkhalter

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Re: Washer pump
« Reply #4 on: April 04, 2019, 07:01:51 PM »
I'll try that.
'85 Chevy K10 361ci sm465

Offline Burkhalter

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Re: Washer pump
« Reply #5 on: April 05, 2019, 10:18:36 AM »
A jumper wire fixed it. Looking at the circuitry It's a straight shot across the board except for the diode which would be easy to wire in another into the jumper in the future.
'85 Chevy K10 361ci sm465

Online bd

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Re: Washer pump
« Reply #6 on: April 05, 2019, 12:35:35 PM »
The capacitor mounted adjacent to the diode is bad, too.
Rich
It's difficult to know just how much you don't know, until you know it....
In other words... if people learn by making mistakes, by now I should know just about everything!!
87 R10 Silverado Fleetside 355 MPFI 700R4 3.42 Locker (aka Rusty, aka Mater)

Offline VileZambonie

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Re: Washer pump
« Reply #7 on: April 05, 2019, 05:38:07 PM »
That is the wiper delay module. GM part # 15598496. Gm is currently out of stock but my locator shows many dealers that have them. Have you tried bypassing the module and plugging the two connectors together. I believe you can and it should work except for the delay portion.

AutoZone sells them too DR199
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Offline hatzie

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Re: Washer pump
« Reply #8 on: April 06, 2019, 02:28:00 PM »
The delay modules can usually be repaired with a half decent soldering station. 
Buy some modern replacements for the ancient electrolytic capacitors and a replacement power diode.  Bet it's a lot less than the $70 they're asking for the substandard Chinese replicas.
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