Re: Oil pressure gauge for a 96 V4 - Saabnet.com Bulletin Board


[General | Members | C900 | 9000 | NG900 & OG93 | 93 | 95 | NG95 | 99 | Sonett | Vintage Models | Performance | Detail | Clubs & SOC | Other Cars | Books Movies & Music | Chat | FAQs | Gifts | Member Photo Galleries | Member Directory | Classifieds | Service/Mechs | Manuals | Polls | What's New | Raffle | Photo of the Month | Sponsors]

Vintage Models Bulletin Board
1950-1966
Search:
(Search Author's Posts: e.g. Keyword:Author)*Members Only


[Main Vintage Models Bulletin Board | Post Followup | BBFAQ ] [ Prev by Date ] [ Next by Date ] Member Login / Signup [Most Recently Edited Saabnet.com Photo Galleries]
Re: Oil pressure gauge for a 96 V4
Posted by eric in vermont [Email] (#2058) [Profile/Gallery] (more from eric in vermont) on Tue, 27 Jun 2017 04:24:42

In Reply to: Oil pressure gauge for a 96 V4, tom0710 [Profile/Gallery] , Mon, 26 Jun 2017 10:56:50
Alert me when someone posts in this thread:

Hi Tom,

Let me start out with some basic information that may help...you may know it already, but maybe others that read this may not.

There's a wire that connects to the existing oil pressure switch- I think the wire color is brown, but that's from memory. When the oil pressure is very low, like less than 10 PSI, the switch provides a ground path so that the red oil light is on. As soon as oil pressure comes up, the switch opens and the light goes off. Therefore, it's not really a sending unit. It's a simple switch.

So why do I tell you this? Over the years I've had two things happen:

- The wire gets pulled off the oil pressure switch and touches the engine block, illuminating the light all the time. I've had this happen after changing the fuel pump and I yanked off the wire and didn't know it.
- The wire gets chafed and touches the car chassis at some point, illuminating the light.

So you might check that wire first- make sure it's connected and then move it around a little bit to disrupt it from connecting to chassis.

The oil pressure switches also do fail. Most often they start to leak out the end, dripping oil everywhere. Second most often, they fail "open", meaning that you don't get a red light in the dash at startup. Not sure I've had one fail "On", but it could happen. A couple of years ago, Rock Auto had a special on the switches- like $2 each- and I bought several. If you can't find one, I could send you one.

Finally...I have oil pressure gauges in two of my VSaabs. One is an underdash unit (Saab 96) and the other is in the dash (Sonett). Both work great and give me piece of mind. I can check when I get home tonight what I used. Both were small diameter, like 2.5", and have a black dial with white lettering.

The big choice to make with a gauge is mechanical vs electrical. The former has a little tube filled with oil that goes to the gauge- that's in my 96. Some people don't like the idea of running an oil line up under the dash. The latter uses a sending unit that provides a resistance based on oil pressure- that's in my Sonett. No oil line, but now you have to find a sending unit that you can mate/adapt to the Saab oil switch threads.

eric in vermont

Posts in this Thread:
Alert me when someone posts in this thread:

Post a Followup

No Site Registration is Required to Post - Site Membership is optional (Member Features List), but helps to keep the site online
for all Saabers. If the site helps you, please consider helping the site by becoming a member.

Name: Member Login / Signup [Most Recently Edited Saabnet.com Photo Galleries]
E-Mail: (Optional)
Re-Enter E-Mail: (Confidential & Secure - Not revealed to other users!)
Note: Please check your spam folder for BB responses.
If you use GMail, follow these instructions from Google so that they appear in your regular inbox.

Subject:

Posting rules are simple - No for sale/wanted ads or live auctions may be here - use the classifieds.
You may not cross-post your message to multiple BBs.
Personal attacks, insults, or flaming are not allowed.
Site Members do not see any red text, inline ad links, skyscraper ads, box ads, nor anti-spam check.

Message: (please no for sale/wanted classifieds - post those in the TSN Classifieds)
To add inline links to your post, use [link]http://www.domain.com/[endlink] or use the Optional fields below.
To add inline images to your post, use [img]http://www.domain.com/img.jpg[endimg] or use the Optional Image Link field below.


Optional Link: (e.g. http://www.saabnet.com/)
To promote your own Saab site here, you must have a link back to The Saab Network.
Link Title: (Optional)
Optional Image Link: (e.g. http://www.saabnet.com/img.jpg)




The content on this site may not be republished without permission. Copyright © 1988-2017 - The Saab Network - saabnet.com.
For usage guidelines, see the Saabnet.com Mission and Purpose Page.
[Contact | Site Map | Saabnet.com on Facebook | Saabnet.com on Twitter | Shop Amazon via TSN | Site Donations]

This is a moderated bulletin board - Posting is a privilege, not a right. Unsolicited commercial postings are not allowed (no Spam). Please, no For Sale or Wanted postings, SERIOUSLY. Classifieds are to be listed in The Saab Network Classifieds pages. This is a problem solving forum for over 250,000 Saab owners, so expect to see problems discussed here even though our cars are generally very reliable. This is not an anything goes type of forum. Saabnet.com has been a moderated forum since 1988. For usage guidelines, see the Saabnet.com Mission and Purpose Page. Please remember that you are not anonymous. Site Contact | Site Donations | Other Sites by SP - Poverty2Prosperity.org | RandomScreening.com
Your address is: 54.83.81.52 - Using CCBot/2.0 (http://commoncrawl.org/faq/) - Logged.

Site Members do not see red text instructions, skyscraper, nor box ads.
Click here to see all the Site Membership Benefits!