sputtering and popping

[aaron8409]

I have a 1995 cav with 102500 miles. Today after work I started it up, and it was shaking pretty bad at idle. When I pulled out, it started sputtering and making a popping sound, but only at low rpms. Once the rpm's came up, everthing was normal. When I stoped at a stop sign, and pulled out, samething happened. The car was fine when I drove it to work in the morning.

Just got the car a week ago, I changed the plugs, air filter, fuel filter, and did a compression test which was good. I did all this before the problem started, and it ran fine for a week.

Any ideas?

[aaron8409]

To be more specific on the popping sound, it is backfiring thru the the thottle body, when the engine is under medium to heavy load. ie. pulling out, not cruising.