Last post on Sep 24, 2013 at 11:21 AM
You are in the Buick LeSabre
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Buick LeSabre, Engine, Sedan
#23 of 305 buick hunting for idle and stalling
Jan 18, 2007 (5:37 pm)
My 1989 Buick with the 3800 is hunting for idle, and idling low it sometimes stalls when accelerating during the hunting. This only seems to happen after the car is warmed up.Error code is 34 (Check vacuum and electrics for MAF sensor). The MAF is pretty new. New plugs and wires. I have noticed when the AC is on, the engine doesn't increase the RPM slightly like it used to do before this problem. It runs nicely as long as my foot is on the gas, but won't idle properly. Is there a way to test the throttle position sensor and the idle control motor? What else could this problem be. I don't suspect fuel pressure problems because the car runs well, except at idle. I would appreciate any suggestions or ideas.
#24 of 305 Suddenly won't start
Jan 26, 2007 (11:04 am)
I own a 1995 Buick Lesabre which has been pretty dependable. It has been in the garage for about a week and today I was going to drive it to work but, it wouldn't start. All the panel lights came on and when I tried to start it I heard a clicking noise but the engine didn't turn over at all.
This buick has about 160,000 miles on it. I replaced the starter about three years ago, changed the valve cover gaskets last year and had the oil pan gasket replaced about 1 month ago. Regular maintenace items also.
What do you think I should try first, jumpstarting?
#25 of 305 Re: Suddenly won't start [jyvette]
by MrShift@Edmunds HOST
Jan 26, 2007 (12:24 pm)
Yep dead battery or bad battery cables.
Clean up the cables on the battery post if you see corrosion, then jump start it but DON'T let the alternator do the work of re-charging the battery. Either take it to a station for a slow charge or better yet go buy yourself an inexpensive charger and let it trickle charge the dead battery overnight.
Please observe safety precautions when jump starting the car.
#26 of 305 Buick Park Ave fuel pump change
Jan 28, 2007 (2:53 pm)
I have a 94 Buick Park Ave. Tests show that I need to replace the fuel pump. In looking up replacements, there are two different types, CAC and CRC according to what is stamped on the connector. So, I'll bring in the old pump to compare. Any tips on doing this job with minimum of work. All pressure is off and both fuel lines are disconnected. Is it worth snipping a hole in the trunk floor above the pump for removal and then fabbing a simple patch panel? It just seems it might be little easier than dropping the tank. Thanks in advance.
#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.