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Buick LeSabre, Engine, Sedan
#27 of 305 Lesabre feels like its going to die at idle....is it the battery.
Feb 20, 2007 (12:46 pm)
I have a 99 buick lesabre with 50,000 miles on it and I have noticed when Im at a red light I can feel the car starting to stall but it never does.This is bad especially at night and I can see the headlights dimming from it.It used to do it while only in drive but I have noticed it starting to happen in park too.Also the other day my car would not start at all....wouldnt even turn over.So I wiggled the red cable a little bit even though it was tight and it started right up.What could be causing this.I have some washers inbetween the post and cables to keep the cables tight.Could they be causing this.I dont see any corrosion.THe inside of the cables look kinda greyish white on the ends.I had to take the rubber connector cover off to hook up my ampwire.
#28 of 305 Re: Lesabre feels like its going to die at idle....is it the battery. [persuazion]
Feb 20, 2007 (12:59 pm)
YOu should take off both the positive and negative cables. Clean them completely. The positive has a washer between the two cables that bolt to that post. Clean completely.
You mentioned an amp. It's possible your amperage load from an amplified is loading the motor too much.
Another possibility is coking up around the throttle butterfly valve. You can take off the rubber connector that leads the air into the throttle body. Then take of the snapring that holds the honeycomb filter in place. Carefully remove honeycomb, I used two paper clips bent as hooks, and then with a piece of wood and cloth use intake cleaner from a spray can onto the cloth to clean the black soot from around the throttle body interior and the butterfly valve itself. Mine had gotten so I could feel it let go when it would sit overnight and I'd press on the pedal slowly. It disrupts the ability of the air bleed that opens and closes to adjust the idle speed because it' calibrated for a certain air flow rate around the throttle platewhen fully closed. Gum that up and th idle control solenoid can't open up enough at times to bleed enough air
Some people remove the whole throttle body to do the cleaning. don't use a brush, the fibers can come out because of the solvent. Be sure to get air intake that says it's safe for catalytic converters. Some carburetor type cleaners aren't.
#29 of 305 Re: Buick Park Ave fuel pump change [d0rothy]
Feb 20, 2007 (2:33 pm)
For others contemplating this.... It is possible to cut a hole and expose the top of the tank. However, to remove the pump, it would have to be a very long hole or the three solid lines to the pump would have to be cut and flared and joined by short pieces of high pressure line and clamps. Probably not worth the trouble. And the floor would have to be patched back up. However, the 99 Park Aves were made with an access panel and designed to be removed from the top of the trunk floor.
#30 of 305 Re: Buick Park Ave fuel pump change [d0rothy]
Feb 20, 2007 (2:37 pm)
A neighbor replaced his 95 MonteCarlo pump. He placed jackstands under the rear of the car. Removed the bolts on two straps holding the tank. Supported the tank with a small hydraulic jack to lower it and the 5 gallons of fuel in it. A neighbor who had done these before helped and guided. I helped with the lowering and getting the tank back up.
The caveat is many people say to buy GM pumps only. There has been trouble with some aftermarket pumps. It's a job I'd only want to do once. The Monte had 85K mi. It had been run low on fuel all the time after the guy inherited it from his father.
#31 of 305 Re: Suddenly won't start [Mr_Shiftright]
Mar 11, 2007 (10:44 am)
I have a 2001 Buick Lasabre that will not start.. it just makes a clicking sound when I try to start it and the panel light all come on when I turn the igition on.. I have bought a new a new battery and it still does the same.. put the old battery back in an put a charger on it.. after awhile I tried to start it with the charger in the boost position.. it started,but when I turned it off it would not start again.. It has started several times now in the boost position.. but will no start on its on..any ideas
#32 of 305 Re: Suddenly won't start [joho4241]
Mar 11, 2007 (12:13 pm)
Could be a bad starter.
But you need to go through the battery cables completely to be sure connections are not corroded and are tight. that includes the grounds and at the starter.
It could be low voltage from the battery not applying the solenoid enough that engages the gear and starts the cranking.
Park with headlights on where you can see them as in a garage. Turn key. If the click occurs and the lights don't dim as if under load, you may have bad solenoid or bad cable. If the lights are dimmed because the starter is drawing lots of amps while the key is urned to start but nothings happening may be the starter is defective, old, bad, gone.
The fact that it starts with the charger on boost makes me suspicious of the battery having a bad cell shorting out giving low voltage without the extra power from the boost.
#33 of 305 1996 Buick Roadmaster
May 11, 2007 (1:41 am)
This is a beautiful car and I love it. When there is mist on the windshield the silly thing won't start. It sounds like it wants to but it won't. A few hours later, when the mist is gone, the thing starts right up and runs like a champ! It seems to happen more when it is misty out than when it is straight out raining. We've even sprayed the engine with a hose (in the middle of the day) and it starts right up. I'm pulling my hair out and my wife isn't too happy about this turn of events (with the Buick). The hair loss I can handle! Any help? [please email me directly at beaumont_painteryahoo.com if you're able to. thanks!]
#34 of 305 2000 Buick LeSabre Stalls after Freeway Driving
May 28, 2007 (4:10 pm)
This has occurred twice. Both times were after a longer drive 80+ miles on the freeway. I stopped for gas and when I tried to start again, it started and ran rough, like it was not hitting on a cyclinder or two or flooded. I held the gas petal down, but that did not help. I had it towed to the Buick dealer and they let it sit overnight. When they went to work on it, it started and ran perfectly. They tried the codes and could find nothing. The service manager told me he suspected it "Vapor Locked", but I have not heard of that in years. Last week it did the same thing, after a longer freeway run, I parked in my driveway and later it would not start, acting just like before. I let it sit overnight and the next morning, it started right up and ran perfectly and has since. I take it on shorter trips around town and nothing happens.
Do you have any idea as to the cause??
#35 of 305 1994 Buick LaSabre stalls and then will start up regular driving
Sep 09, 2007 (1:06 pm)
Hi I have a 1994 LaSabre with 148,000 miles on it. Runs like a champ, has a 3800. This has happened to me 3 times and I can't figure out what is going on.
All three times at night and I have stopped for a light or sign and the car just quits, headlights go off, radio goes out, 12 volt power supply (radar detector) is also off, no dash lights, windows won't work. I open the door and the lights go back on as well as all the other things and I am able restart the car.
I was thinking the issue is in the wiring harness that goes from the car into the door and it is shorting. Funny thing is all the power goes out and no fuses have blown. Any one heard of this. Don't want to start taking stuff apart unless I am on the right track.
#36 of 305 05 LeSabre, no crank, batt good, lights dont dim but wiper stops
Sep 15, 2007 (6:00 pm)
background: I drove 30 miles round trip today -- no trouble starting the car at either end. I parked the car and five minutes later my wife tried to start it but it would not turn over.
The battery is fine -- 12 v and checked out fine under load at AutoZone. Connections were clean and were cleaned anyhow. 12 v is seen at the fuse box under the rear seat and under the hood. There have been no issues with the car's electrical system or performance.
With the ignition switch off, the keyless entry works fine. There does not appear to be any change from normal operations when the key is turned to on, i.e., the radio works, wipers wipe, and driving lights turn on automatically (made in Canada). The tranny is in Park.
What seems very strange is that when the key is turned to start the instrument panel dies and the wipers stop (if I have them turned on), BUT THE HEADLIGHTS KEEP SHINING UNDIMINISHED. When the switch is released back to the on position, the instrument panel come back to life after a second and the wipers start again. The voltage at the battery when the ignition switch is turned to start drops only to 11 v. Now why is that? And where is the problem?
Thanks in advance,
P.S. -- I went outside to double check the voltages and had my son man the ignition switch. The first three or four times we still had no crank with a very slight voltage drop from OFF to ON and to START. However, much to my surprise, the next time the car promptly started as did the time after that!! I can upgrade my car from DEAD to TOTALLY UNRELIABLE but I'll admit I am clueless as to what is going on. My mechanic usually wants to see cars when they are symptomatic from an intermittent problem and not when they're working as they should, but that leaves me wondering when and where it will do this again -- hence the hope that someone knows whats wrong so I (or my mechanic) can fix it.