Need help. My Dakota is stalling after it warms up. 90% of the time is at idle when it happens but does it while in motion some times. Jasper rebuilt engine was installed about a year ago. The only things kept from the original motor was the intake and throttle body. All the old sensors were kept also. I have already replaced the iac in the throttle body. Any suggestions? Also it does not throw any codes. Thanks in advance.