1991 s-10 4.3L Oil pressure switch? - Team Camaro Tech
Troubleshooting Diagnosing problems done here.

 
LinkBack Thread Tools Display Modes
post #1 of 6 (permalink) Old Sep 24th, 07, 08:57 AM Thread Starter
Senior Tech
Alex Folino
 
Join Date: Aug 2005
Location: Pittsburgh Pennsylvania
Posts: 1,295
Send a message via AIM to AlexFolino
1991 s-10 4.3L Oil pressure switch?

For about 10 years now my 91 s-10 4.3L tbi has been having the oil pressure bounce around from 80-25 and vice versa. I installed a new oil pressure switch to see if that was the problem but now it stays at 40 all the time and almost on 0 at idle. Does anybody know why its doing this and if so could it be fatal?


thanks
alex

GM service technician.

25 years old. I only drive chevys. Everything else and i do mean everything can rust in piece.

68 owner-The only way to go

Camaro: A small vicious animal that eats mustangs.
AlexFolino is offline  
Sponsored Links
Advertisement
 
post #2 of 6 (permalink) Old Sep 24th, 07, 06:46 PM
Banned
Ron
 
Badbird's Avatar
 
Join Date: Jul 2005
Location: Dearborn Heights, MI
Posts: 3,176
Re: 1991 s-10 4.3L Oil pressure switch?

How long has it been dropping down to 0 @ idle??.....Are you hearing any serious engine knocking or ticking @ 0??.....If not then it's probably a bad wire connection at the oil pressure switch....By the way, I have a 1991 and 1993 Chevy S10 Blazer with the 4.3, the 91 is tbi and 93 is cpi.....Both read high oil pressure when cold and drop down when hot!
Badbird is offline  
post #3 of 6 (permalink) Old Sep 24th, 07, 07:59 PM
Senior Tech
 
Join Date: May 2001
Location: Ashby,MN, USA
Posts: 8,305
Re: 1991 s-10 4.3L Oil pressure switch?

if it's been doing that for a decade, i don't think i'd start trying to fix it now.

you don't plan sincerity.
you have to make it up on the spot.

wanna hear about 20 years ago when i was too smart to know any better?
novaderrik is offline  
post #4 of 6 (permalink) Old Sep 25th, 07, 04:00 AM
Super Moderator
Jake-68's rule
 
Everett#2390's Avatar
 
Join Date: Sep 2000
Location: Va Beach VA
Posts: 29,167
Re: 1991 s-10 4.3L Oil pressure switch?

If you replaced with aftermarket sender, visit dealer and get an AC/Delco unit.

I did the same with my 88 truck, oil pressure was bouncing all over and thought I got a good brand, Standard Products. Gauge exercised as if it was on a mega-dose of caffine, then died. Got a refund and headed to dlr for replacement, no problem since.

Give a man a rescued dog for the health of both their souls.
'With age comes wisdom, but then wisdom ages you even more.' GO CUBS! Other Stuff
Everett#2390 is offline  
post #5 of 6 (permalink) Old Sep 25th, 07, 03:21 PM Thread Starter
Senior Tech
Alex Folino
 
Join Date: Aug 2005
Location: Pittsburgh Pennsylvania
Posts: 1,295
Send a message via AIM to AlexFolino
Re: 1991 s-10 4.3L Oil pressure switch?

I put the original in and does the exercising needle. Then again its been doing this forever so ill leave it. The engine makes no noises. Kind of funny because i used a friends 91 blazer last night and his gauge doesnt go under 60 at all haha.

thanks!

GM service technician.

25 years old. I only drive chevys. Everything else and i do mean everything can rust in piece.

68 owner-The only way to go

Camaro: A small vicious animal that eats mustangs.
AlexFolino is offline  
post #6 of 6 (permalink) Old Sep 26th, 07, 04:31 PM
Senior Tech
mike
 
Join Date: Jan 2007
Location: connecticut
Posts: 1,163
Re: 1991 s-10 4.3L Oil pressure switch?

these guages dont seem to be very reliable...maybe try a mech guage for 20 dollars...it`d be nice to know the oil pressure isnt actually 0 at idle...

sometimes you`re the windshield and sometimes you`re the bug...
kustomwerker is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Team Camaro Tech forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address.
NOTE we receive a lot of registrations with bad email addresses. IF you do not receive your confirmation email you will not be able to post. contact support and we will try and help.
Be sure you enter a valid email address and check your spam folder as well.



Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome