Hello. I think one of two things is happening. Either one of the bulbs you installed is wrong, defective or installed incorrectly. If that is not it, then compare the side you are having problems with to the other side and count the number of lights that blink with the turn signals. Often there is more than one on the front or rear. For example, if only one of 2 turn signal bulbs are out you will still see the working one flash but still have the fast blink happening.
Does that make sense?
yes. i will check it and get back to you.