Honda accord 91 DX....engine have problem with speed?

well lets look... when you're driving, does the speedometer drop to 0 then to your current speed then back to 0, and chances are, does it stay? When you're driving in the morning or when it is sorta cold, or really cold, and you don't warm the engine before your trip does it do this? Let me give you my experience... I have a 1990 Honda Accord EX when it is cold outside, and I start my car and just go, the speedometer goes nuts! After the car is warm, it works ok, but it repeats its actions everytime I get in the car on a cold day, and don't warm it before I go. You will not get a "check engine" for this fault. However, it is called a "VSS" Vehicle Speed Sensor, if these are your symptoms, there is your problem! Hope this helps!

ok here it is when youu et in your car in the morning start it and let it warm up for bout 10 mins but u need to change ur spark plugs because thats a big changeif u buy new ones and u might want to consider getting a tune up