Windshield Wiper and sprayers inop
Thread Starter
Rennlist Member
Joined: May 2002
Posts: 9,272
Likes: 1,327
From: Roswell, GA
Windshield Wiper and sprayers inop
1991 S4
Fuse 19 (Headlamp Washing System) is good
Fuse 34 (Windshield Wipers, Washer Jet Heating ) is good
Intensive washer relay clicks when I press the button.
Ignition switch is OK, I have brake lights.
I have the wiper motor connector separated from the motor. Can I apply 12 volts to the motor for testing and anybody know the which connector pins are 12 volt and ground. I assume they are the first two pins where the wires come into the connector, but it is difficult to know without taking the connector apart.
Anybody know?
Fuse 19 (Headlamp Washing System) is good
Fuse 34 (Windshield Wipers, Washer Jet Heating ) is good
Intensive washer relay clicks when I press the button.
Ignition switch is OK, I have brake lights.
I have the wiper motor connector separated from the motor. Can I apply 12 volts to the motor for testing and anybody know the which connector pins are 12 volt and ground. I assume they are the first two pins where the wires come into the connector, but it is difficult to know without taking the connector apart.
Anybody know?
Thread Starter
Rennlist Member
Joined: May 2002
Posts: 9,272
Likes: 1,327
From: Roswell, GA
Update - wiper motor and intensive washer are good.
Since the fuses are ok, I assume I am looking at a inop wiper/washer stalk.
Can the combo switch be fixed? Is there a way to use the parts from a pre-1990 combo switch to fix my 91 combo switch?
Since the fuses are ok, I assume I am looking at a inop wiper/washer stalk.
Can the combo switch be fixed? Is there a way to use the parts from a pre-1990 combo switch to fix my 91 combo switch?
Rennlist Member
Joined: Mar 2002
Posts: 6,115
Likes: 344
From: Texas
Relay Relay Relay
I would imagine that the wipers would at least be wired through Relay XI (993.615.101.00)
Washers are Relays VII (928.618.111.00) Head lamp washers and IX (928.618.113.01) Intensive Washers. A click by a relay doesn't necessarily mean that contact has been made
I would imagine that the wipers would at least be wired through Relay XI (993.615.101.00)
Washers are Relays VII (928.618.111.00) Head lamp washers and IX (928.618.113.01) Intensive Washers. A click by a relay doesn't necessarily mean that contact has been made
Last edited by soontobered84; Dec 12, 2014 at 02:02 PM. Reason: more info added
Rennlist Member
Joined: Mar 2002
Posts: 6,115
Likes: 344
From: Texas
BTW, I had a problem with the wipers on the Stepson. Power everywhere but the wipers weren't wiping. I moved the stalk to wipe and manually moved the wipers. The motor started taking over from there. Turns out that lack of use/corrosion/lack of lubricant was too much for the wiper motor to overcome on it's own. Initial manual assistance combined with appropriate lubrication corrected the problem.
YMMV
YMMV
Rennlist Member
Joined: Jul 2002
Posts: 3,269
Likes: 5
From: Deep in the Heart of Texas!
I had a no-wiper problem and turned out to be the intermittent wiper timer or relay ... apparently that must also be functional for the wiper motor to turn. Surprised both me and Sean ...
BTW, if you end up needing combo switch parts I kept my old one so give a shout
BTW, if you end up needing combo switch parts I kept my old one so give a shout
Electron Wrangler
Lifetime Rennlist
Member
Lifetime Rennlist
Member
Joined: Mar 2002
Posts: 13,660
Likes: 621
From: Phoenix AZ
Are you sure you are checking (and actually testing with a DMM) the correct fuse - fuse #34 on a '91. This is still by far the most likely cause.
The wipers do not need any relay to run but an intermittent wiper relay must be fitted for the wipers to park correctly.
Alan
The wipers do not need any relay to run but an intermittent wiper relay must be fitted for the wipers to park correctly.
Alan
Thread Starter
Rennlist Member
Joined: May 2002
Posts: 9,272
Likes: 1,327
From: Roswell, GA
-KB
Trending Topics
Thread Starter
Rennlist Member
Joined: May 2002
Posts: 9,272
Likes: 1,327
From: Roswell, GA
Well, finally got a chance to look at this more deeply. Turns out when I push and hold fuse 34 in the wipers work. Tried another fuse and same deal. Tweaked the fuse blades still no good.
I am going to guess there is a problem with the fuse block. Feh!
I looked the fuse block and indeed there is an issue with the lower connector in the block.
I will search for solutions - although I expect I will be pulling the CE panel this week.
I am going to guess there is a problem with the fuse block. Feh!
I looked the fuse block and indeed there is an issue with the lower connector in the block.
I will search for solutions - although I expect I will be pulling the CE panel this week.
Last edited by Kevin in Atlanta; Feb 1, 2015 at 04:48 PM. Reason: Additional information
Rennlist Stories
The Best Porsche Posts for Porsche Enthusiasts
9 Features and Characteristics That Only Porsche People Understand
Verdad Gallardo
I've Written 500 Rennlist Articles: Here's How Porsche Has Changed Along the Way
Joe Kucinski
10 Most Unnecessary Porsches Ever Built (And Why We Love Them)
Verdad Gallardo
Porsche 911 GT3 S/C vs 718 Spyder RS: 10 Categories, One Winner
Joe Kucinski
This Builder Is Turning Heads With Its Slantnose 911 Creation
Verdad Gallardo
Porsche 911 GT3 Artisan Edition Pays Homage to Japanese Culture
Verdad Gallardo
Porsche Reveals Coupe Variant of the Electric Cayenne With a Fresh Look
Verdad Gallardo
10 Porsche Colors That Have More Personality Than Most People
Verdad Gallardo
Guntherwerks' Final Speedster Creation Is the Ultimate Porsche Restomod
Verdad Gallardo
Electron Wrangler
Lifetime Rennlist
Member
Lifetime Rennlist
Member
Joined: Mar 2002
Posts: 13,660
Likes: 621
From: Phoenix AZ
Thread Starter
Rennlist Member
Joined: May 2002
Posts: 9,272
Likes: 1,327
From: Roswell, GA
I took a peak at the fuse holder for #34 and I can see the top copper but the bottom one is not visible. Is there a possibility once I pull the CE forward that I can re-seat the connector at the back of the block?
I have a few CE boards I can steal a block from - one is a 1991 for a GT - I guess I can start there.
Thanks for the link. Is there another one explaining how to remove the blocks?
I have a few CE boards I can steal a block from - one is a 1991 for a GT - I guess I can start there.
Thanks for the link. Is there another one explaining how to remove the blocks?
Electron Wrangler
Lifetime Rennlist
Member
Lifetime Rennlist
Member
Joined: Mar 2002
Posts: 13,660
Likes: 621
From: Phoenix AZ
https://rennlist.com/forums/928-foru...ml#post9205321
Alan
Thread Starter
Rennlist Member
Joined: May 2002
Posts: 9,272
Likes: 1,327
From: Roswell, GA
Today I popped the fuse block from a 94 CE panel after comparing the fuse charts. The method I used for popping the fuse block out was to use a 45 degree pliers to remove the wires from the rear of the block and then using a small screwdriver to get between the CE panel and the fuse panel retaining clip and while maintaining moderate pressure on the back of the block twist the screwdriver to release the fuse block from the CE panel.
Next I will pull the 91's CE and do the same.
Next I will pull the 91's CE and do the same.
Electron Wrangler
Lifetime Rennlist
Member
Lifetime Rennlist
Member
Joined: Mar 2002
Posts: 13,660
Likes: 621
From: Phoenix AZ
Tell me what fuse block from the '94 GTS and what fuse block from the 91 - lets just make sure you aren't going to suffer a melt down first....
Again the fuse blocks are NOT all the same - you can destroy your car by doing this wrong...
Alan
Again the fuse blocks are NOT all the same - you can destroy your car by doing this wrong...
Alan