Even if you are experienced and knowledgeable about cars, we prefer that you describe the symptom rather than the cause.  Describe your issue in this way:  "My car does this when I do this and the conditions it happens under  are these".    If you have technical insight, then at this point you can say, "I think it's caused by this, for this reason.   Although you have the best intentions, we prefer you don't use car jargon, or self-diagnose the problem.