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Buick LeSabre, Engine
#62 of 138 Fuel problem?
Nov 23, 2009 (3:22 pm)
I have a 1993 buick lesabre, here's my problem, first of all let me add this, new fuel filter was installed, fuel pressure was checked, and was in parameters. So my problem is, the car starts fine, idles fine. On the highway and on city streets, when stepping of the gas, the car boggs down step down further, and more so, let up slightly and its ok. I was treating the fuel with star tron, and used recommended amounts and it cleared up for sometime, now I am back to the bogging down when stepping on the gas, and the fuel treatment no longer works. Have any Ideas? please help!
#63 of 138 1995 Lasabre Custom 89000 miles
Dec 07, 2009 (6:38 am)
Just got this Lasabre about a week ago. 1995, 89,000 miles. It has the 3.8 V6. It seems to have been well maintained. Incredible cosmetic condition!
It starts on 1st turn of the key and runs very smooth.
I do hear some engine knocking, sounds like it is coming from somewhere on the top end passenger side. The knocking starts when I put it in drive.
I also have an oil leak from somewhere, it is also on the passenger side. I got underneath and cleaned around the oil pan and oil filter but the leak is coming from somewhere above. I didn't see any leakage around the head covers.
I am having a hard time locating where the oil is coming from. Any ideas on how to narrow it down?
Thanks in advance
#64 of 138 Re: 1995 Lasabre Custom 89000 miles [datencio]
Dec 07, 2009 (10:16 am)
Hi Doug, I just sent my 95 to a new home with 250000 mi on it, For your oil leak, LOOK just above the filter (oil) and you will see the oil pressure sending unit, it costs about $8...and from what you described I'll bet that is it. A very easy job, take off the right front wheel and remove the rubber splash guard (it has little plastic pins that look like a nail head,use diagonal cutters) DIKES gently go under the nail head and pry upward to remove them. They will come out in two pieces, then start the engine and check for the leakwhere the wire connects. Check Autozone for the best price if one is near you, as for the knock well that is pretty much impossible to guage without hearing it. you can e me at rsa2500hotmail if you need more info. I can only hope that it never ran without any oil in it.But if it only knocks when put in gear then it probably is not the engine..Hope this helps Bob.
#65 of 138 Re: 1995 Lasabre Custom 89000 miles [bob252]
Dec 10, 2009 (10:34 pm)
Thanks for the info I will check out the oil sensor.
I don't know the history of the engine, but it runs smooth no hitches at any speed and no smell of hot or burning oil coming from anywhere. I got the car for song and have another I drive regularly so I can take my time with the LaSabre. Took it for a small road trip to Fresno (about 800 miles round trip) the ride was so smooth all my passengers abandon me to sleep!
I will let you know the outcome of the oil sensor
#66 of 138 1997 buick lasabre 3.8
Feb 08, 2010 (4:32 pm)
I am looking for a diagram for the 1997 buick lasabre engine. Also my oil pressure is pretty much nothing and hitting the red line, I was told by several mechanics and including the dealer that oil pumps rarely go out in that buick but they suggested that I take off the oil filter, then remove either 2 bolts or 4 bolts and underneath that is something called a by pass valve or also by the name of oil pressure regulator valve, the dealer calls it a by pass valve, has anyone ever heard this, but most of all I need a diagram of the buick lasabre 3800 engine
#67 of 138 oil pan gasket replacement
Feb 14, 2010 (4:03 pm)
I was just wondering do I have to lift the engine in any way to take off the oil pan to replace the gasket on a 1997 buick lasabre 3.8 engine. The way I can see it is there is like to bolts that come off to get some kind of guard off so I can see the remaining 2 bolts on the backside of the oil pan, otherwise I see the other 18 bolts. Also I have replaced something called the bypass valve or " oil regulator vale" that is located inside the oil filter housing. You take off the oil filter & then there are 4 bolts to take off, the the by pass valve is in there spring loaded. The valve looks like a socket that has been hollowed out best I can describe it, but my question to that is I replaced that valve and oil pressure was great, then I drove around for a little bit then the pressure dropped down to like it was in the red before when I had to stop driving it. But I guess my question to this valve thing is COULD the spring be bad to where it is not pushing the valve back and forth like it should be doing because the valve appears to be jammed again inside the oil filter housing and the spring doesn't appear to be doing its job as well. ALso is it tru the the oil pump either works or it doesnt by the dealer and auto stores as well. I was able to drive 4 miles before the pressure dropped back down since i replaced this bypass valve
#68 of 138 #67 oil pan
Feb 17, 2010 (4:49 am)
Hi No need to lift engine, remove the splash guard from the starter, remove the bolts and twist the pan to remove the oil pick up (2 bolts) and the pan will fall down. The pan gasket from the 95 that I own was reusable and a thick plastic one. You need to remove that splash guard to access the bolts in that area, you do not need to remove the starter....Hope this helps.
#69 of 138 Re: Oil Pan Gasket Replacement [bob252]
Feb 17, 2010 (11:03 am)
Thankyou for your reply. I am going to replace the spring that goes behing the bypass valve which all that is behind the housing. You take off the oil filter, then remove 4 bolts, then that will come off and there is a little valve that looks somewhat like a socket and a spring goes in behind that. Then I am replacing the oil pickup tube with a new one along with a new gasket. Then I will see if I am able to get oil pressure, if not then any suggestions would be helpful as I would not think the oil pump itself would let a car run 4 miles then drop pressure, oil is not getting somewhere and Im hoping that replacing what im doing will resolve this. So my next question is when a oil pump is bad, will it work intermittingly or just NOT work at all, I was told it would just not work at all.
Feb 17, 2010 (1:41 pm)
This is probably very simple.
I have a '97 Regal with Plain Jane Kelly Springfield tires. Great tires, quiet, smooth, and I can drive any where in ice and snow.
I cannnot drive my 2003 LeSabre in ice and snow. Tires.....Used Car "salesman" tells me they are new. They LOOK like good tread, etc. BUT the LeSabre is a heavier car (?) than my Regal and the LeSabre is useless in snow or ice. Dangerous is a better description.
Would I be safe in buying new or similar tires for my LeSabre?
Any thoughts would be appreciated.
#71 of 138 oil pump replacement
Feb 20, 2010 (4:26 pm)
Can someone tell me the necessary steps to replacing an oil pump in a 1997 buick lasabre limited with a 3800 series 2 engine, for example what tools needed and if timing chaing has to come off, so if there is someone that is 100% sure of the steps I need to take please respond as I dont have 700 bucks to take it to a garage and yes im mechanically inclined, just need the steps