IT SOUNDS TO ME LIKE A FAULTY e.h.a SYSTEM THIS LEANS AND RICHENS THE ENGINE FOR HOT WARM AND COLD STARTING,THE PART IS VERY EXPENSIVE LOCATED ON THE BACK OF THE FUEL DISTRIBUTOR UP AGAINST FIREWALL, it has a 2 prong connector end on it and its under the left passengers side of the air filter box,ALSO THE ENGINE TEMP SENSOR PLAYS A ROLL IN HOW THIS WORKS CHECK THE CONTINUITY OF THE ENGINE TEMP SENSOR.

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enjoy life,take the coal that is handed to you and turn it into diamonds. { PHILLIPIANS 4:13}