I Have A 1994 Honda Accord Ex 4 Cyl Automatic And I Have A Problem With My Car Rpm On The Dashboard Constantly Jumps Up And Down While In R, D4, Or D3. The Car Also Hesitates While In R, D4, Or D3 While Under 40 Mph, But It Doesn't Kills, But Its Constantly Getting Worse. I Dont Have A Check Engine Light On Anything, I Had One But I Just Replace The Distributor, And Spark Plugs And It Went Off, But The Problem Continues And I Had The Vaccum Lines And The Gas Lines Check And They Were Good And Now I Have No Ideal What Is Wrong Wit My Car I Really Really Hope That There Is Someone Out There That Can Help Me. Thank You In Advances For Any Help

 

If you replaced the Distributor, I would check the timing again if not already. If it's off you will have the problem that you are describing.

-D

 

The tach signal circuit uses the ignition coil. Shift points are also calculated using this signal. I have seen failing ignition coils cause problems like this. COULD be yours as well.