my moms 03 pilot started running strange today...her idle bounces from 800-1200 rpms really fast and then the check engine light comes on and the vtm4 light as well....she recently had the transmission replaced and other than that its been a flawless car. it has 144,000 miles on it .....any clues would be great....

 

prob iac (idle air control valve) going bad...gonna guess p0505...get the codes checked out...if its a p0505 change the valve under the throttle body...be sure to get throttle body gasket.