Taking care of your Cloth-Top

Use as little water as possible and only a small amount of car wash. Don't go through the car wash.

If you have small stains you're trying to get out try something like Meguiars Convertible Top Cleaner

Tom,
Generally, this is caused by either a vacuum leak somewhere on the top of the engine or dirty fuel injectors. Listen carefully for a vacuum leak [sucking air sound] at or near the top of the engine. Another way to locate a vacuum leak is to spray carburetor cleaner [aerosol can] at small areas, where there are vacuum hoses or intake gaskets. When you find the area of the leak, the carb cleaner will get sucked into the leak. This will generally cause the engine to run better.
Try adding fuel injection cleaner to the gasoline tank. I recommend the Chevron Techron brand of fuel injection cleaner. Advance Auto and Costco carry this brand.

there are several types of sprays to clean interriors. one is for carpets and fabric other type is for plastic other is for leather or vynil.

first of all you need to clean interriors by sweeping it with vacuum cleaner and with water and natural soap. do not use lots of water since you will need to dry it later.

after cleaning interrior you need to proper liquid to clean related surface and wiping it with a soft quality cloth.

in general fabric surfaces like top lining and seats and carpets require two pcs of sprays(multi purpose interrior cleaner). if you seats are leather covered you need leather contidioneer. after cleaning fabric and leather. use plastic cleaner in pressureized spray cans. after wiping off all left cleaning agents, clean windows with only alcohol with a microfiber cloth.

this will take normally 1 to 2 hours. use gloves.

The symptoms all indicate a dirty (oily grime) build up in the throttle body interior. You will be pleased to learn the 'fix' should be quick and low cost.
Disconnect the air ducting between the air cleaner/filter housing and the throttle body. Spray WD40 or Carb choke cleaner into the throttle body interior and the throttle plate. Rub and wipe away the grime. Keep doing this until the interior looks like new. Turn the throttle Plate by applying pressure the the top half with your fingers. Clean as much as you can beyond it. Locate your idle air control (IAC) valve ( on or near the throttle body) and associated air passages to and from it. Clean these, if necessary dismount the IAC valve and soak the valve until free of all dirt. Reassemble everything and reinstate the ducting and you are done!