Mazda Repair: engine, maintenece, mazda 626


Question
I have a 1990 Mazda 626 4 cyl car and my problem is that the engine surges ay ow RPM's in first and second gears.  It seams to be getting worse.  I don't know if it is filter, some kind of sensor or what.  Can you help?

Answer
well, i can help, but i will need additional information from you.

When was the car last serviced and does it recieve routine maintenence such as filters, spark plugs, timly oil chainges, and how long have you owned it?

Do you buy gas at the same gas station all the time?

Have you performed any serious maintenece reciently?

Have you ben experiencing very humid and or wet weather?

I will be waiting for you response.

John