Oil Pressure Quiz - Page 3 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

Reply
 
 
 
Thread Tools Search this Thread
Old 08-18-2003, 10:53 PM   #21
Member
Posts like a V-Tak
Thread Starter
 
Join Date: Jun 2003
Posts: 31
Thanks: 0
Thanked 0 Times in 0 Posts
mevans49083 is on a distinguished road
Default

Haha! No, it wasn't, and yes, it undoubtedly was.
mevans49083 is offline   Reply With Quote
Old 08-18-2003, 11:17 PM   #22
Senior Member
Posts like a Corvette
 
Ol' Timer's Avatar
 
Join Date: Oct 2002
Location: New Jersey - Most of Our Elected Officials Have Not Been Indicted
Posts: 1,483
Thanks: 0
Thanked 0 Times in 0 Posts
Ol' Timer is on a distinguished road
Default

Ya know, sometimes I feel better not knowing the truth about my car. No Oil Pressure Gauge, No Voltmeter, No Water Temp, No Tach and No Worries. But to be honest, I am looking forward to the solution. I'll throw my hat into the ring with a *.W.A.G.(silly wild *** guess) of a Bad Ground. Although I can't see how that is possible since the sending unit itself is grounded to the block.
Ol' Timer is offline   Reply With Quote
Old 08-18-2003, 11:22 PM   #23
Member
Posts like a V-Tak
Thread Starter
 
Join Date: Jun 2003
Posts: 31
Thanks: 0
Thanked 0 Times in 0 Posts
mevans49083 is on a distinguished road
Default

Nope, not a bad ground. Here, I'll give a big clue (since I already know the answer)...it wasn't an electrical issue.
mevans49083 is offline   Reply With Quote
Old 08-18-2003, 11:31 PM   #24
Senior Member
Certified GM nut
 
Join Date: Jul 2003
Location: Ab,ca
Posts: 1,963
Thanks: 0
Thanked 0 Times in 0 Posts
1992 trofeo is on a distinguished road
Default

spun a bearing? got a bad oil pressure sending unit?
1992 trofeo is offline   Reply With Quote
Old 08-19-2003, 12:28 AM   #25
Member
Posts like a V-Tak
Thread Starter
 
Join Date: Jun 2003
Posts: 31
Thanks: 0
Thanked 0 Times in 0 Posts
mevans49083 is on a distinguished road
Default

Nope. Bearings are fine, and sending unit is fine, as proven after the fact (now!).
mevans49083 is offline   Reply With Quote
Old 08-19-2003, 01:00 AM   #26
Member
Posts like a V-Tak
Thread Starter
 
Join Date: Jun 2003
Posts: 31
Thanks: 0
Thanked 0 Times in 0 Posts
mevans49083 is on a distinguished road
Default The Answer!

OK, enough suspense....I don't anyone to blow an artery over this.

The pan had what appeared to be a relatively minor dent from the
outside......however, internally, it completely closed the gap between the
pickup and the floor of the pan. At any kind of engine speed, the pump
would try to flow more than the impeded pickup could provide, and Presto!
Inverted oil pressure syndrome. RPM go up, oil pressure goes
down........RPM go down, oil pressure (now fully fed) goes back up to where
it should be.

I can't imagine how many "mechanics" I would have had to go through to have
this diagnosed if I had taken it anywhere, rather than fixing it myself.
mevans49083 is offline   Reply With Quote
Old 08-19-2003, 01:10 AM   #27
Junior Member
Posts like a Ricer Type-R
 
Join Date: Aug 2002
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
willwren is on a distinguished road
Default

Good one!

You're nothing but a big tease.
willwren is offline   Reply With Quote
Old 08-19-2003, 09:46 AM   #28
Junior Member
Posts like a V-Tak
 
Join Date: Jun 2003
Posts: 28
Thanks: 0
Thanked 0 Times in 0 Posts
2MCHPSI is on a distinguished road
Default

Ahhhh. So the pickup did have some sort of restriction. I was partially right, just didn't know about a dented pan Actually one of the first things I would have done was check the oil presure with a manual gauge, then take the pan off to inspect the pickup. I guess it really does not take much to give the pickup fits.
2MCHPSI is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Yankee or Dixie quiz SSE14U24ME Lounge 20 01-12-2005 01:37 PM
The Ultimate 80's Quiz Rogue Lounge 19 03-28-2004 01:29 AM
Quick Quiz MOS95B Lounge 4 03-17-2004 12:24 PM
Sexual Tension Quiz BadTA00 Lounge 3 12-25-2003 12:28 AM
Quiz!!!!!!!!! ssesc93 General GM Chat 3 08-23-2003 08:25 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not 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 Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 01:13 PM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.