Question about 2002 Buick LeSabre
When accelerator is depressed, engine hiccops and hessitates then begins to race and forces car to propel, holding the brake prevents accidents, turning off the ignition, waiting 10 seconds and restarting the engine, all is ok and runs fine... until the next time it happens a day or two later.
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Posted on Jan 02, 2017
If wiggling the wires cured the code, then one of the wires is broken inside the insulation. Pull on each wire one at a time. look for the colored insulation to stretch, this will be the broken wire. For the other car that wont rev up, this is a common when the catalytic concverter is plugged up. This will also cause MAF codes, and in turn, TRAC OFF light.
Posted on Oct 17, 2008
Most faultcodes don't disappear automaticly, the have to be 'reset' manually after repairing. It sounds like the code didn't get erased after replacing the MAF. You could try to disconnect the battery for 10 minutes (disconnect and reconnect the negative (-) pole), which should erase the code.
Whenever the engine light still comes back on after that, there probably still is some (other) problem ...
Posted on Aug 24, 2009
IT SOUNDS LIKE THE TPS (THROTTLE POSITION SWITCH/SENSOR) IS BAD, BUT TO BE SURE OF THE PROBLEM ,YOU WILL NEED TO HAVE IT HOOKED TO A DIOGNOSTIC SCANNER & IT WILL PINPOINT EXACTLY WHAT THE PROBLEM IS.
Posted on Dec 05, 2009
There are many possible reasons while the car will shut down at cold , or when idling or slow.
A good thing to do would be going to the nearest Autozone and doing an error code scanning on the engine. This is free of charge, and will tell you if there is any error codes stored in the car computer.
I will try to summarize possible causes for your problem. I will list only common faults that can cause the car shutting down when you press the pedal after idling.
Air flow problems:
This commonly affect the engine when this is cold.
Check air filter, air intake, MAF (mass airflow) and IAT (intake air temperature). This problems are more noticeable when the engine is cold.
The vacuum system uses recirculated gases in your engine. A vacuum leak or a bad EGR valve can give you troubles, particularly when idling. Vacuum system is tested using an hand tool gauge.
Injection and fuel system:
A malfunctioning fuel pump, a clogged fuel line, or an injector problem may be causing the fault. Pump and lines are tested using the same hand gauge used on vacuum system
Distribution and spark plugs:
If this is the problem, then the engine is shutting down because of misfire. You will get engine warning light on, and the misfire will be reported after doing an error code scanning. When you have distributions problems you can also easily feel that the engine is not running as it should.
An automatic transmission malfunction can cause the engine to shut down when you push the pedal. When this is the problem you realize that the cause is the transmission, and that the wrong gear is on.
Other electronic troubles (ECU , wiring, etc)
The best thing to do is trying to understand in what of the condition above you may be, eventually stop at the nearest Autozone and ask a free OBDII scan, or come back to us with a more detailed description of your problem symptoms. OBDII scan can also be done using an hand tester.
Posted on Jan 11, 2010
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