I have a 92 ranger with a 4cyl 5 speed that runs okay when it is cold, but after it warms up and you turn it off, it will start, but will not stay running. Just replaced the timing belt which broke. Timing marks are lined up. Not sure about the timing sensor, could this be my problem? After the truck warms up and you try to start it, the truck backfires and dies. Thanks for any help you may be able to give me.