Stalls out at low or stopped speed. Drove 800 miles- never stalled. Drove 3 miles- stalled. Starts up and go, but can't slow down or feels like will stall again. Then 4 or 5 days, fine. Tune up, plugs, new hub, brake lines, brakes and nothing at all shows in diagnosing code. (thats great, but not for this problem).Years ago transmission installed, showed ignition coil possible replacement needed. Doesn't come up in code now.Throttle cleaned out,oil change ,air filter, fuel filter- all done! Afraid to drive far,although it does start up. Never done it at speeds of 20mph or more.
Have you had it to a shop that has a professional type scan tool that can view engine sensor data parameters ? Do you know what those are ? Idle air control counts , mass air flow sensor data , MAP sensor , TPS - throttle position sensor , crankshaft position sensors , Cam sensors , engine coolant temp , intake air temp etc......
SOURCE: 1995 Buick Lesabre custom stalling and idle
did you clean the idle speed control air bypass valve?, u do this by spraying carb spray into the intake while the engine is held at hi idle so it won't stall, use up about half the can, then shut down and disconnect battery for 5 minutes to reset system idle learn, drive the car for a few days and let me know if the problem is fixed.
SOURCE: I have a 94 Buick LeSabre with 109,000 miles that
Its probably a vacuum line problem or EVAP or possibly the Mass Air Flow Sensor. Make sure that is hooked up as well. Examine all lines to see if there is a rip or tear or anything loose
SOURCE: 1994 LeSabre, V6 3.8 (150K) is stalling out
sounds like the egr valve is sticking. remove and clean. or a vacuum hose is leaking
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