99 not maintaining oil pressure - 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 10-04-2005, 06:21 PM   #1
Junior Member
Thread Starter
 
Join Date: Oct 2005
Posts: 5
Thanks: 0
Thanked 0 Times in 0 Posts
MrVille is on a distinguished road
Default 99 not maintaining oil pressure

Hellow fellow Bonneville lovers! I got problems with my engine and would appreciate any help I can get.

I have a 99 Bonneville SE and one night after work deciced to drive around for a while. I live in the middle of no where and work 2 miles from home. It was around 1 am and I turned on a road and floored it and then noticed I didn't have as much power as usual. I was watching my speed and the car would not go over 60mph. I came to a stop sign and as i started to turn the car died. Thankfully, I was only a mile from home.

So, I sat on the side of the road for a while and called someone at my house to come and push my car home with their car. (Where I live you can't just leave your car on the side of the road, because it WILL get vandalized.) By the time my friend showed up my car started. But, once again would not go over 60. As i turned on my block I noticed the temp was at 250 degrees and the oil pressure was in the red zone and then the car died. So, I got pushed the rest of the way down the bock into the drive way.

So, came out next day and started the car after about 5 minutes of ideling, the oil pressure starts to drop. And after a few more minutes it drops all the way down to 0 and the warning bell goes off repeatedly, but the car doesn't die.

I checked my Motortrend program on my computer and it says it is likely that the oil pump is bad, but it also says that if I have no oil pressure then I the check oil light should be on. But, the light is not coming on. And I also hear a ticking sound coming from the engine, which again, is supposed to mean the oil pump is broke.

Funny thing is you can't buy oil pumps for Bonneville'*. I can find only oil pump re-build kits. So, if it is the oil pump, anyone have a clue on how hard it is to re-build the oil pump?
MrVille is offline   Reply With Quote
Old 10-04-2005, 07:29 PM   #2
BANNED
 
Join Date: Aug 2002
Posts: 0
Thanks: 0
Thanked 0 Times in 0 Posts
banned3800 is on a distinguished road
Default

Is the car full of Coolant... The radiator that is? Its very rare for the oil pump to go out in these motors...

It sounds a lot more like you are having Bottm end troubles... as the oil pressure tanks as the engine heats up... Not sure ehat to tell you at this point, you may want to get a mechanical gage on there and see what the oil pressure really is... I get the feeling there will be doom... Usually when these engines go bad it has a bit to do with the upperintake allowing the engine to ingest coolant...

Please check the oil, and tell us what color it is and weather or not it smells burnt or is milky...

Good Luck

__________________
Best Car Insurance | Auto Protection Today | FREE Trade-In Quote
banned3800 is offline   Reply With Quote
Old 10-04-2005, 07:48 PM   #3
Junior Member
Thread Starter
 
Join Date: Oct 2005
Posts: 5
Thanks: 0
Thanked 0 Times in 0 Posts
MrVille is on a distinguished road
Default

yeah I checked the coolant and it was full. Before this happened I put on a new head gasket set, so naturally had to change oil and filter. I put less than a hundred miles on the car before this happened. And nope, the oil doesn't smell burnt.

I replaced the head gasket because I was losing coolant, but never saw any coolant on the ground. Turned out the coolant was getting in to my intake because a chunk of plastic that was missing. So, I spent $260 on a headgasket set that I didn't need to spend, and ended up paying another $150 for a huge piece of plastic. :(

And that fixed the leaking coolant problem. But, could I be having this new problem because of the previous coolant problem?
MrVille is offline   Reply With Quote
Old 10-04-2005, 08:04 PM   #4
Junior Member
Thread Starter
 
Join Date: Oct 2005
Posts: 5
Thanks: 0
Thanked 0 Times in 0 Posts
MrVille is on a distinguished road
Default

and how come my check engine light is not coming on? it came one when i was having the coolant problem and went off as soon as i fixed it.
MrVille is offline   Reply With Quote
Old 10-04-2005, 08:16 PM   #5
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

There are no sensors to detect what'* happening right now. My best guess at this point would be that your head gaskets have failed again. No insult intended, but that'* the last thing that was worked on, and this is a classic case of loss of compression and oil pressure.

Did you use NEW bolts on the heads? The OEM bolts are torque-to-yield, one time use only.

If your coolant and oil look good, my advice would be to get a compression check on all 6 cylinders. My bet is that 2 of them will be low.
willwren is offline   Reply With Quote
Old 10-04-2005, 11:24 PM   #6
Junior Member
 
Join Date: Mar 2003
Location: Purgatory
Posts: 0
Thanks: 0
Thanked 0 Times in 0 Posts
vital49 is on a distinguished road
Default

I have nothing significant to contribute, but am curious to how many miles are on the car?
vital49 is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Maintaining the UIM/LIM 3800 Mischievious_D 1992-1999 7 10-14-2017 09:02 PM
T-stat maintaining 201 not 195 kanecats Buick 5 05-16-2012 03:03 PM
maintaining radio silence timothy_nd28 1992-1999 1 09-22-2008 08:59 AM
Low oil pressure sensor in oil pan... Bob Dillon 1992-1999 9 05-11-2006 09:23 AM
not good. NOT GOOD. (hit and run, not bad-BAD, but not good) repinS General GM Chat 13 11-26-2004 11:35 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 12:28 AM.


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.