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Check the throttle plate for varnish or carbon build up , clean with throttle plate cleaner . Have engine sensors scanned with a scan tool ,mass air flow sensor may be dirty . I'd tell you to check fuel trims with scan tool but you are probably not familiar with these . They show how much fuel the engine computer is adding or subtracting . Great diagnostic tool for trouble shooting engine running problems . Also a scan tool is great to check O2 sensor switching rich to lean an back to rich signal . The engine runs in open loop when cold which means the PCM doesn't look at O2 sensor data till warmed up . PCM/ECM adds more fuel till warmed . Then it will go into closed loop fuel control , the PCM/ECM watches O2 sensors . May have a vacuum leak ,check with can spray carburetor cleaner ,spray around the intake manifold an listen for the engine RPM to pick up or may even stall the engine. Understanding Short Term and Long Term Fuel Trim
To trouble shoot the fuel pressure you will need a fuel pressure tester, now if you dont have one start the vehicle (if it starts) open the gas cap and listen for the fuel pump it should humm and you will be able to here it. with thhe vehicle running you should be able to hear it and if it shuts off the car will stall, if it doesnt and the vehicle stall out you need to look elsewhere
you might want to look at your O2 sensors, they can cause the motor to run lean or rich. also you might have an electrical issue that is tripping your ECM. your electronic control module might be faulty. best solution is to get a trouble code reader and find out what your on board computer has stored. from there you can repair and clear the codes.
If it won't idle but it will run fine when you drive it and only stalls when you come to a stop then it is possible be the idle air control valve. The computer controls this idling and this will not always set a check engine light on or set a diagnostic trouble code.
Sounds like you have a small bit of dirt or grit in the fuel system when accelerating it is drawn with enough force to cut off the fuel supply then is released when engine at Idle. 1 run liquid fuel line/injector cleaner in 1 tank 2 check fuel lines for debris 3 change fuel filters 4 have fuel tank flushed here is trouble shooting order less expense to greater.
Hi I am Vortash sounds like an inlet manifold air leak or check the ignition leads they could be sparking out to earth , or possibly the choke is stuck on or filter needs changing restricting air flow .. Hope this is of help regards Vortash
yes it can but you may have a coolant temp sensor acting up which causes the computer to open the injectors to much which can also cause this 02 sensor code. when it stalls do u have spark and fuel pressure.
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