How do I reset my Check Engine Light?

Flashing check engine light means don't drive it. It can damage things. Get a code scanner from auto parts store, rent it buy it etc. run the scanner to see what it says

WHIT A SCANNER IF THE PROBLEM PERSISIT SHE WHILL CAME BACK NEED TO TAKE THE CAR TO A MECANIC

From the symptoms of the problem and the precautions you have done i think its time to check the EGR valve.Clean your EGR valve and then put it again. How handy you are in ding this?

As the check engine light is on did you scan for error code which will help you more specific to locate the problem.

1994-99 BUICK LESABRE
CHANGE OIL SOON Light
1. CHANGE OIL SOON light will come on when engine oil has broken down enough to require changing. After changing oil, reset oil life display.
2. To reset light, turn ignition on. Open glove box to access oil reset button. Press and hold oil reset button in glove box for at least 5 seconds, but not longer
than 60 seconds. The CHANGE OIL SOON light will flash 4 times to indicate light has been reset.

It would be better if you got the codes read and then post back with the code.There are numerous codes that can cause the check engine light to go on.Auto Zone will do this for free.There are a few other parts stores that do this for free also.Hope this helps.Good luck.

you can take of the ground of the battery of the car for 30 minutes and the computer will reset. if you drive around without reseting the computer might figure it out after 30 miles.

Take it to a local auto parts store (Autozone, Murray's, Checkers, Napa) have them hook up a scan tool to get the diagnostic codes, write them down and post them here so we can further assist you. There are many reasons that can cause the check engine light to come on.

even if you have preasure in the line that does not mean you have fuel going into the engine. you should check the injectors to see if they are spraying and if not you need to check the injector pulse to find out if the PCM is sending the signal to them to spray. to check injector pulse you will need a noide light to test the pulse it the light lights up you have pulse, but easy way to check is pull an injector and turn the engine over see if it sprays.

BEFORE YOU CAN ATTEMP ANY REPAIRS U MUST HAVE THE SYSTEM TESTED FOR THE FAULT CODE THAT IS STORED EACH TIME THE LIGHT IS SET, THERE ARE OVER 50 SUCH FAULTS POSS IN YOUR CAR, SO HAVE THE TEST DONE.

take it have theme read the codes maybe a vaccum leak,mass air flow sensor,egr valve could be numerous things the code will tell you