Hello! Log in or Register   |  Help  |  Donate  |  Buy Shirts See all banner ads | Advertise on TheSamba.com  
TheSamba.com
 
Strange issue -- Clicking Sound and Oil Pressure Light
Forum Index -> Thing/Type 181 Share: Facebook Twitter
Reply to topic
Print View
Quick sort: Show newest posts on top | Show oldest posts on top View previous topic :: View next topic  
Author Message
herewego
Samba Member


Joined: November 14, 2011
Posts: 78
Location: Milwaukee, WI
herewego is offline 

PostPosted: Thu Oct 07, 2021 7:28 am    Post subject: Strange issue -- Clicking Sound and Oil Pressure Light Reply with quote

Strange issue with my 1973, which is otherwise running well and is well maintained.

In a certain RPM range -- probably 1500-2500, in neutral or in gear, I'm hearing a distinct clicking sound that seems to be coming from the driver side rear. It's easy to hear in the car, seemingly from behind the back seat, but I haven't been able to hear it much or at all in the engine compartment, maybe just because the engine noise drowns it out.

I thought it was just another rattle or vibration at first. But it sounds more electrical, like a switch or solenoid kind of click. In addition, I noticed last night when I was running it in the dark that whenever the clicking sound is happening, the headlights seem to flicker a bit, AND the oil light flickers on, faintly but with increasing intensity with RPMs in that range. I'm quite certain that there is a connection between the clicking and the oil light.

Any of this ringing a bell for anyone? I'm wondering if I have a faulty oil pressure switch or a bad connection. I'll test for these when I get a chance, but I'd love any thoughts you have in the meantime.
Back to top
View user's profile Send private message Gallery Classifieds Feedback
Semper_Dad
Samba Member


Joined: May 14, 2005
Posts: 3510
Location: Indiana
Semper_Dad is offline 

PostPosted: Thu Oct 07, 2021 8:57 am    Post subject: Re: Strange issue -- Clicking Sound and Oil Pressure Light Reply with quote

Clicking from the rear usually indicates a CV joint is going bad. Clicking will increase or decrease relative to vehicle speed, not engine speed.

Can't think of anything electrical on a stock vehicle that would make that kind of noise.
_________________
Walküre Restoration Thread: https://www.thesamba.com/vw/forum/viewtopic.php?t=737492
Back to top
View user's profile Send private message Send e-mail Facebook Gallery Classifieds Feedback
jakokombi
Samba Member


Joined: August 15, 2010
Posts: 777
Location: Milwaukee
jakokombi is offline 

PostPosted: Thu Oct 07, 2021 12:50 pm    Post subject: Re: Strange issue -- Clicking Sound and Oil Pressure Light Reply with quote

You don't have an electric fuel pump, do you?
_________________
70 Sunroof Kombi
69 Tin Top
73 Thing
72 Baja
Back to top
View user's profile Send private message Facebook Gallery Classifieds Feedback
herewego
Samba Member


Joined: November 14, 2011
Posts: 78
Location: Milwaukee, WI
herewego is offline 

PostPosted: Thu Oct 07, 2021 1:57 pm    Post subject: Re: Strange issue -- Clicking Sound and Oil Pressure Light Reply with quote

No, it’s a stock setup.
Back to top
View user's profile Send private message Gallery Classifieds Feedback
kenj06
Samba Member


Joined: November 28, 2011
Posts: 198
Location: Ohio
kenj06 is offline 

PostPosted: Thu Oct 07, 2021 6:30 pm    Post subject: Re: Strange issue -- Clicking Sound and Oil Pressure Light Reply with quote

Pump for the gas heater?
The sound wouldn't be in the rear but it does click and mine dims the headlights and dash lights.
Back to top
View user's profile Send private message Gallery Classifieds Feedback
Gene Kisner
Samba Member


Joined: September 02, 2012
Posts: 80
Location: Fairmont, West Virginia
Gene Kisner is offline 

PostPosted: Thu Oct 07, 2021 7:36 pm    Post subject: Re: Strange issue -- Clicking Sound and Oil Pressure Light Reply with quote

Drivers side rear? Clicking, like a relay cycling? Lights flicker? I think it looks (sounds) like your voltage regulator is doing a lot of cycling. Since it is fastened to the firewall it would act like a drum, therefore sound louder in the car. Check for loose connections, especially the battery terminals.
Back to top
View user's profile Send private message Gallery Classifieds Feedback
Wildthings
Samba Member


Joined: March 13, 2005
Posts: 50338

Wildthings is offline 

PostPosted: Sun Oct 10, 2021 10:43 pm    Post subject: Re: Strange issue -- Clicking Sound and Oil Pressure Light Reply with quote

Check the brushes on your generator for wear. If the outer end of the brushes doesn't extend out of the brush holder your brushes are shot and should be replaced before running the engine any more. If the commutator where the brushes rides looks uneven and badly burnt it might be time for that alternator you have been dreaming of or at least a factory new generator assuming they are still available in these Covid times.
Back to top
View user's profile Send private message Gallery Classifieds Feedback
herewego
Samba Member


Joined: November 14, 2011
Posts: 78
Location: Milwaukee, WI
herewego is offline 

PostPosted: Mon Oct 18, 2021 11:53 am    Post subject: Re: Strange issue -- Clicking Sound and Oil Pressure Light Reply with quote

Gene Kisner wrote:
Drivers side rear? Clicking, like a relay cycling? Lights flicker? I think it looks (sounds) like your voltage regulator is doing a lot of cycling. Since it is fastened to the firewall it would act like a drum, therefore sound louder in the car. Check for loose connections, especially the battery terminals.


Great idea -- thanks.
Back to top
View user's profile Send private message Gallery Classifieds Feedback
herewego
Samba Member


Joined: November 14, 2011
Posts: 78
Location: Milwaukee, WI
herewego is offline 

PostPosted: Mon Oct 18, 2021 11:53 am    Post subject: Re: Strange issue -- Clicking Sound and Oil Pressure Light Reply with quote

Wildthings wrote:
Check the brushes on your generator for wear. If the outer end of the brushes doesn't extend out of the brush holder your brushes are shot and should be replaced before running the engine any more. If the commutator where the brushes rides looks uneven and badly burnt it might be time for that alternator you have been dreaming of or at least a factory new generator assuming they are still available in these Covid times.


I'll take a look. Thank you.
Back to top
View user's profile Send private message Gallery Classifieds Feedback
Gene Kisner
Samba Member


Joined: September 02, 2012
Posts: 80
Location: Fairmont, West Virginia
Gene Kisner is offline 

PostPosted: Wed Oct 27, 2021 5:49 pm    Post subject: Re: Strange issue -- Clicking Sound and Oil Pressure Light Reply with quote

Have you found anything yet?
Back to top
View user's profile Send private message Gallery Classifieds Feedback
herewego
Samba Member


Joined: November 14, 2011
Posts: 78
Location: Milwaukee, WI
herewego is offline 

PostPosted: Wed Apr 27, 2022 6:51 am    Post subject: Re: Strange issue -- Clicking Sound and Oil Pressure Light Reply with quote

So, we had one day of warm weather here in Wisconsin, and I was finally able to replace the voltage regulator with a new Bosch unit that I ordered from TTS last Fall.

The good news -- the clicking sound has stopped, so I think the VR must have been the issue there. The bad news -- when the car warms up, the oil light still comes on and stays on. I change the oil and check the level regularly, so no issue there. No now I have to apply my limited skills troubleshooting to the cause of the oil light before I'll feel comfortable driving it again.

I appreciate all of your help on this! And, of course, welcome any oil light troubleshooting tips.
Back to top
View user's profile Send private message Gallery Classifieds Feedback
Semper_Dad
Samba Member


Joined: May 14, 2005
Posts: 3510
Location: Indiana
Semper_Dad is offline 

PostPosted: Wed Apr 27, 2022 8:04 am    Post subject: Re: Strange issue -- Clicking Sound and Oil Pressure Light Reply with quote

You have two options

1) Remove the oil pressure sensor and hookup a mechanical oil pressure gauge. Readings should be 25-65 PSI

2) Remove and test the oil pressure switch itself.


Link

This video shows a two terminal sensor. In our situation, the body of the sensor is the other terminal


Don't buy cheap Chinese switches. Go for a good German one like Hella. Careful though, there are counterfeit Chinese posing as German ones
_________________
Walküre Restoration Thread: https://www.thesamba.com/vw/forum/viewtopic.php?t=737492
Back to top
View user's profile Send private message Send e-mail Facebook Gallery Classifieds Feedback
herewego
Samba Member


Joined: November 14, 2011
Posts: 78
Location: Milwaukee, WI
herewego is offline 

PostPosted: Thu Apr 28, 2022 9:08 am    Post subject: Re: Strange issue -- Clicking Sound and Oil Pressure Light Reply with quote

Thanks. I'll get after it.
Back to top
View user's profile Send private message Gallery Classifieds Feedback
mainstreetprod
Samba Member


Joined: March 09, 2017
Posts: 313
Location: Tennessee
mainstreetprod is offline 

PostPosted: Sun May 01, 2022 6:54 pm    Post subject: Re: Strange issue -- Clicking Sound and Oil Pressure Light Reply with quote

herewego wrote:
Thanks. I'll get after it.


Don't drive it much until you find the problem. If the oil pressure sensor is accurate, and the light comes on and stays on, just a matter of time until the engine self destructs. Low pressure caused by engine wear usually causes a main bearing "thump" as a warning before the motor is completely gone. But if the oil pump just quits, the light will come on and stay on just like you describe.
Back to top
View user's profile Send private message Gallery Classifieds Feedback
herewego
Samba Member


Joined: November 14, 2011
Posts: 78
Location: Milwaukee, WI
herewego is offline 

PostPosted: Thu May 05, 2022 8:00 am    Post subject: Re: Strange issue -- Clicking Sound and Oil Pressure Light Reply with quote

mainstreetprod wrote:
herewego wrote:
Thanks. I'll get after it.


Don't drive it much until you find the problem. If the oil pressure sensor is accurate, and the light comes on and stays on, just a matter of time until the engine self destructs. Low pressure caused by engine wear usually causes a main bearing "thump" as a warning before the motor is completely gone. But if the oil pump just quits, the light will come on and stay on just like you describe.


Right. I'll be testing the pressure this weekend. I also went ahead and ordered a Hella switch, so I have that if needed. Won't be driving until it's sorted.
Back to top
View user's profile Send private message Gallery Classifieds Feedback
herewego
Samba Member


Joined: November 14, 2011
Posts: 78
Location: Milwaukee, WI
herewego is offline 

PostPosted: Tue May 31, 2022 8:55 am    Post subject: Re: Strange issue -- Clicking Sound and Oil Pressure Light Reply with quote

Still no luck. Pressure test shows mid-40s, installed brand new Hella switch, oil light is on steady red. On top of that, I'm now getting a brake light, even though I've only driven a few miles and there is no visible sign at the pedal, at the wheels or at the master of any issue. Extremely frustrating, since our driving season here is short, and I'm at a bit of an impasse.

I wonder if I messed something up when I changed out the voltage regulator? I did it carefully, wire to wire, so I really don't think that's it.

In any event, I'm going to have to find some local help when time permits. Probably sounds like I'm whining -- more just disappointed that I can't get this right, and I'm going to miss the local show next weekend. @#$%!
Back to top
View user's profile Send private message Gallery Classifieds Feedback
Wildthings
Samba Member


Joined: March 13, 2005
Posts: 50338

Wildthings is offline 

PostPosted: Tue May 31, 2022 10:58 am    Post subject: Re: Strange issue -- Clicking Sound and Oil Pressure Light Reply with quote

If when the engine is running and the light is on, what happens when you remove the wire from the oil pressure switch? Does the light stay or or go out?

Did you order the replacement switch by application or by the part number on the old switch?
Back to top
View user's profile Send private message Gallery Classifieds Feedback
FJBLF
Samba Member


Joined: January 10, 2016
Posts: 213

FJBLF is offline 

PostPosted: Tue May 31, 2022 5:47 pm    Post subject: Re: Strange issue -- Clicking Sound and Oil Pressure Light Reply with quote

I would start by replacing this one..


Link

_________________
1972 VW 181 SAFARI 1500 cc GRB Trans-axle
Back to top
View user's profile Send private message Gallery Classifieds Feedback
FJBLF
Samba Member


Joined: January 10, 2016
Posts: 213

FJBLF is offline 

PostPosted: Tue May 31, 2022 5:49 pm    Post subject: Re: Strange issue -- Clicking Sound and Oil Pressure Light Reply with quote

Then, I would build one of these...


Link

_________________
1972 VW 181 SAFARI 1500 cc GRB Trans-axle
Back to top
View user's profile Send private message Gallery Classifieds Feedback
herewego
Samba Member


Joined: November 14, 2011
Posts: 78
Location: Milwaukee, WI
herewego is offline 

PostPosted: Mon Sep 26, 2022 8:21 am    Post subject: Re: Strange issue -- Clicking Sound and Oil Pressure Light Reply with quote

Finally got this figured out, with an incredibly helpful day-long visit from Robbie at Airschooled.

My replacement of the voltage regulator did solve the clicking problem. However, shortly after replacing, I was getting both an oil pressure light and a brake light. Weird.

I gauged the oil pressure -- no issue; I replaced the pressure switch with a brand new Hella unit, but unfortunately the problem did not resolve. Weird.

As we worked through it, Robbie noticed that one of the wires was not completely seated on the voltage regulator -- the plastic sleeve on the connector was seated, but not so much the wire, which (it turns out) is important.

The disconnected wire was the one that works on both the generator light and the brake light. So why was I getting an oil pressure light? Robbie correctly surmised that, at some point over the last 50 years, someone had done some electrical work and switched the oil pressure light and the gen light where they connect behind the speedo. We opened up the dash, switched the wires (and cleaned things up a bit), and presto!

All is well, and thankfully I never really did have an oil problem. Thanks to the people who contributed to this thread, and especially to Robbie at Airschooled, for the great detective work.
Back to top
View user's profile Send private message Gallery Classifieds Feedback
Display posts from previous:   
Reply to topic    Forum Index -> Thing/Type 181 All times are Mountain Standard Time/Pacific Daylight Savings Time
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum

About | Help! | Advertise | Donate | Premium Membership | Privacy/Terms of Use | Contact Us | Site Map
Copyright © 1996-2023, Everett Barnes. All Rights Reserved.
Not affiliated with or sponsored by Volkswagen of America | Forum powered by phpBB
Links to eBay or other vendor sites may be affiliate links where the site receives compensation.