Oil Pressure question Problem/ Need Help - Page 2 - 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 07-27-2007, 01:17 PM   #11
Senior Member
Posts like a Camaro
 
Join Date: Aug 2004
Location: Chi-Town
Posts: 1,116
Thanks: 0
Thanked 0 Times in 0 Posts
Boreas is on a distinguished road
Default

You ether buy a mechanical gauge from the store and hook it up where the sending unit is, then run the engine and read what it says.

Or, an easier method, just take it to a mechanic and ask them if they can hook one up, and more than likely they will do it for free and give you a reading.

According to my research, the oil pressure gauges are inaccurate, anywhere from 5 to 10 psi on the LOW side and the pressure sending units can be flaky. I would take it in and confirm the oil PSI with a mechanical gauge and if it shows good readings, just replace the sender and also make sure that the contacts are clean because any bit of insulation on the contacts will cause a lower than normal reading.
Boreas is offline   Reply With Quote
Old 07-27-2007, 04:16 PM   #12
DINOSAURUS BOOSTUS

Expert Gearhead
 
BillBoost37's Avatar
 
Join Date: Mar 2005
Location: Enfield, CT
Posts: 41,391
Thanks: 0
Thanked 0 Times in 0 Posts
BillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of light
Default

There is one for sale right now.

http://www.bonnevilleclub.com/forum/...ic.php?t=82502

You could buy it..test and then sell for nearly all your cost.
BillBoost37 is offline   Reply With Quote
Old 07-27-2007, 05:40 PM   #13
Senior Member
Posts like a 4 Banger
Thread Starter
 
Join Date: Mar 2006
Posts: 106
Thanks: 0
Thanked 0 Times in 0 Posts
wf2tm51 is on a distinguished road
Default

haynes manual said I needed a handheld tachometer to make the oil pressure reading
wf2tm51 is offline   Reply With Quote
Old 07-27-2007, 08:49 PM   #14
Senior Member
Posts like a Corvette
 
Join Date: Jun 2005
Location: Berkeley, IL
Posts: 1,596
Thanks: 0
Thanked 0 Times in 0 Posts
DarkShadow is on a distinguished road
Default

Just a fyi, supertech filters are now e-core ones, you know the ones with the plastic inside instead of the metal retainer for the filter material....

id definately not use them anymore.
DarkShadow is offline   Reply With Quote
Old 07-27-2007, 09:37 PM   #15
Senior Member
Posts like a 4 Banger
Thread Starter
 
Join Date: Mar 2006
Posts: 106
Thanks: 0
Thanked 0 Times in 0 Posts
wf2tm51 is on a distinguished road
Default

The only reason i think supertech/ walmart buys their filter from fram and reprint their name is becasue the follow the same code as fram
wf2tm51 is offline   Reply With Quote
Old 07-27-2007, 11:44 PM   #16
Senior Member
Posts like a 4 Banger
Thread Starter
 
Join Date: Mar 2006
Posts: 106
Thanks: 0
Thanked 0 Times in 0 Posts
wf2tm51 is on a distinguished road
Default

for the last 2 hrs I read through a lot of posts about low oil pressure identical to my problem ( engine gets to normal temp oil pressure drops to or real close to red at idle) and it seems to be very common for this situation to arrive around 100,000+ miles in 92-99 bonny'* however not one person in the posts i read revealed what fixed this problem. So far all i got was check pressure with mechanical gauge then if pressure on mech. gauge is good then replace sender, however if you find out dash gauge told the truth your bearings are probably bad. The temporary remedy is 15W40 and babying the car. Is what i picked up so far correct. what else to prolong life of engine
wf2tm51 is offline   Reply With Quote
Old 07-28-2007, 01:38 AM   #17
Senior Member
True Car Nut
 
Join Date: Mar 2004
Location: Ames, Iowa
Posts: 3,066
Thanks: 0
Thanked 1 Time in 1 Post
bill buttermore is on a distinguished road
Default

Quote:
Originally Posted by wf2tm51
So far all i got was check pressure with mechanical gauge then if pressure on mech. gauge is good then replace sender, however if you find out dash gauge told the truth your bearings are probably bad. The temporary remedy is 15W40 and babying the car. Is what i picked up so far correct. what else to prolong life of engine
Rarely, oil pressure problems can be caused by a weak or stuck spring and/or piston in the oil relief valve assembly located near the oil filter. This happens, but is not common. If the low pressure is caused by wear, run thicker oil, and keep the engine cool. Install a good transmission cooler, make sure your cooling system is in good shape, and install a drilled, 180F thermostat.
bill buttermore is offline   Reply With Quote
Old 07-28-2007, 02:12 AM   #18
Senior Member
Posts like a Camaro
 
Join Date: Aug 2004
Location: Chi-Town
Posts: 1,116
Thanks: 0
Thanked 0 Times in 0 Posts
Boreas is on a distinguished road
Default

What are your PSI readings from the mechanical gauge? Dont trust the gauge in the dash, they are known to be crap.
Boreas is offline   Reply With Quote
Old 07-28-2007, 01:25 PM   #19
Senior Member
Posts like a 4 Banger
Thread Starter
 
Join Date: Mar 2006
Posts: 106
Thanks: 0
Thanked 0 Times in 0 Posts
wf2tm51 is on a distinguished road
Default any tips or pointers before i do this?

im going to buy a gauge now i need some tips this is my plan of attack

1.Jack passenger side up put on stand
2. take off wheel well cover to get to oil filter area
3. hook up gauge and make my readings from there
4. My book says to get car up to normal temp
5.Then get car up to 2,400 Rpm
6. Make reading, haynes says at least 37 PSI at 2,400

The book also says as a general rule a car should have ten psi for every 1,000 RPM. If this is true at idle the dash gauge would be near the red all the time. I think haynes manual should have never put that in their repair manual that makes things confusing
wf2tm51 is offline   Reply With Quote
Old 07-28-2007, 04:16 PM   #20
Senior Member
Posts like a 4 Banger
Thread Starter
 
Join Date: Mar 2006
Posts: 106
Thanks: 0
Thanked 0 Times in 0 Posts
wf2tm51 is on a distinguished road
Default

Just got done the mechanical reading came out between 55-60 PSI on the mech. gauge at 2,400 RPMS on my dashs Tachometer, at normal operating temp. Now what do you think i should do i have to replace my oil pressure sending unit by default because i broke it taking it off. I'm going to take pics of the unit to see if you guys think it may be bad however i may have messed it up when i tore apart the housing im also going to take some pics of this other sensor just dangling in the area i have to clue were it goes.
wf2tm51 is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
3.8 V6 oil pressure so high blowing theseals out of filter? need help?? Jdhunts General GM Chat 15 10-11-2013 08:23 AM
1995 SE--burning oil, low oil pressure gauge. AeroCoupeSS87 1992-1999 2 12-10-2007 09:52 PM
Low oil pressure. Thicker oil? J Wikoff 1992-1999 71 06-08-2006 11:54 AM
Low oil pressure sensor in oil pan... Bob Dillon 1992-1999 9 05-11-2006 09:23 AM
Need help ! Funky oil pressure gauge! the1boss 1992-1999 1 05-29-2003 11:12 AM


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 10:56 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.