Dodge truck 6 cylinder 3.9L engine ECU Up for Sale is a Working, in excellent condition dodge pickup truck engine ECU. My list shows this works with 1988 6 cyl manual transmission only- and that is the truck this is from.  Don't let a dead ECU be the end of yours. Part number listed at the top or in the large pictures. Check the part number to be sure this is right for your Truck.***!!!RARE ECU ALERT!!!***

These are very hard to find in good working condition. This unit was runtested & is functional, and offers a 30 day warranty. Please be sure to double check the part number off your original unit before buying. A defective unit is one of the most common no start or random stalling problems with these trucks. They can also be the cause of erroneous check engine lights, cold or hot start problems, or idle control malfunctions.  I have seen failures on these units many times due to rodents storing nuts & building nests inside the cooling passageway of the computer itself!  Their nest blocks the airflow to the injector driver and their urine damaged the board, making a rodent damaged unit UNREBUILDABLE!   If yours does not have problems, keep an extra ECU in the trunk, you might some day be glad you did... These units are very expensive to buy new. Thanks for looking!