Car Surges When Idling Help Please!

I bought a 98 z28 about 6 months ago.The car ran excellent but a few weeks ago it started to idle stragely. It idles ok a few secs then surges(like a rough idle) then back to normal then surges again over and over. It has perfect acceleration when I give it gas and runs fine but the idle problem is bugging me. The car has 66,000 miles on it and I know the guy never put plugs on it or wires.The check engine light isnt on either.Can anyone give me some advice on what to do about it/look for?? Has anyone of you had this problem?

Thank you----mike

Replace the plugs and wire, then inspect all vacuum lines for dry rot and cracks.

Ill do those things first.thanks-mike

Also make sure that your air filter is clean and all of the throttle body crap is clean. I had a LT1 that did the same thing (idle surge) and all it needed was a air filter and the throttle body sprayed and cleaned.

Clean your maf while your at it

I will do it. This site rules. I get so much good info. any time I have a problem. Sure do appreciate you help fellas---mike

I had a 95 Z28 that did that, it was either the mass air had slipped off slightly or the IAC needed cleaned.GOOD LUCK!

Do I take the MAF off the car to clean it?

Yes, take it off to clean it. Use non-residue electrical cleaner. Clean the IAT sensor while you're at it. Also, change your fuel filter.

Info. is much appreciated. Thanks again---mike