so just got the car was sitting for four months. put new gas and cleaner in it runs good ut after driving it for awhile it wants to die i really dont think its the iac. any other suggestions?

 

Not much info to go on there. First, do a proper compression test. May save you a lot of time looking for a phantom problem. For information on doing a ghetto compression test, search the forum.

Edit: Read this as well:
http://www.aaroncake.net/rx-7/blown.htm

 

year? model?