How often does a Buick LeSabre stall on the highway?

Once or twice a day with no rhyme or reason car will stall. It stalls at slow speeds and highway speeds. sometimes I can put it in nuetral as I’m still rolling and start the engine again but usually I will have to pull over and wait about 15 min. before car will start again.

What causes a Buick engine to not start?

Check the intake manifold for vacuum leaks, given that the ignition and fuel system were both good. Look for any rubber hoses that are either disconnected or broken. A vacuum leak will cause a no start if the leak is large enough. Don Bowman has been writing for various websites and several online magazines since 2008.

What kind of engine does a Buick 3.8 liter have?

Unlike earlier model vehicles, which incorporated a simple carburetor and distributor, the GM Buick 3.8-liter engine features a computer-controlled engine management system.

Where is the spark plug on a Buick?

If there is no spark, check the ignition control module located under the coil packs on the passenger side front of the engine. Probe the electrical plug with 14 wires in the ignition control module.

How many times has Buick air flow sensor failed?

Secondary market mass air flow sensor failed 3 times… had to purchase genuine Buick part at 3 times the cost to finally repair. Problem: Engine hesitation a various speeds from highway (60+mph) down to idle at stoplight and hesitation when accelerating.

What does smoke coming from the back of a car mean?

But if something is amiss, you’ll see a cloud of smoke coming out of the back of your car. There are three common colors of exhaust smoke emitted from a gasoline-powered engine: Black smoke indicates an engine air-fuel mixture that is too rich — meaning there’s too much fuel and not enough air.

What does it mean when your car has blue smoke coming from the tailpipe?

Blue-gray or gray-white smoke. Blue-gray or gray-white smoke usually means the engine is burning oil. If you have a turbocharged engine, a faulty turbo seal could be causing this, but if you have a more common engine, it’s likely one or more of the following problems:

What causes erratic shifting in a Buick 200C?

Erratic Shifting The 200C Buick transmissions are known for erratic shifting thanks to brittle plastic connectors holding the shift points. Bad modulators may also cause this problem. Also, external sensors on the 4L60E and 4L80E transmissions are also known to go bad and cause erratic shifting.

Why are the shift points on my Buick not working?

These pistons can be replaced by aluminum models in rebuilt transmissions. When in proper working order, this mechanism regulates engine braking, allowing for smooth shifting. The 200C Buick transmissions are known for erratic shifting thanks to brittle plastic connectors holding the shift points. Bad modulators may also cause this problem.

What causes a Buick to have a shortened life?

Buicks with 440T4 / 325 4L transmissions may exhibit shortened lives if the attached modulator is not maintained. The condition of the modulator may be checked by pulling the attached vacuum line from its connector to the transmission; fluid in the line indicates a bad modulator.

What to do if your Buick engine wont start?

Unlike earlier model vehicles, which incorporated a simple carburetor and distributor, the GM Buick 3.8-liter engine features a computer-controlled engine management system. If the system fails and the car won’t start, you must follow a process of elimination to diagnose the problem.

Unlike earlier model vehicles, which incorporated a simple carburetor and distributor, the GM Buick 3.8-liter engine features a computer-controlled engine management system.

Is the 1995 Buick LeSabre hard to start?

I am working on 1995 Buick LeSabre. It will run ok for awhile, but then it stalls and is hard to start. Recent work on it was a normal tune up, Spark plugs, wires, gas filter, and air filter. I even dropped the gas tank and cleaned it out. Also, when I rev the engine, I can not get it to go over 4000 rpms.

Is the ECM on my Buick LeSabre working?

Buick LeSabre: Customer Replaced ECM Now A No Start, No Lights, NO NOTHIN! – YouTube If playback doesn’t begin shortly, try restarting your device.

How to check for spark in Buick LeSabre?

You can check for spark by using a spare plug and putting the spark plug wire from the car on it and laying the plug on something solidly attached, grounded, to the motor. Have someone turn key and see if you get spark. Pumping the accelerator pedal doesn’t do anything in this day of fuel injection.