Volvo engine ECU Up for Sale is a Working, in excellent condition Volvo ECU. This is the unit that works with many non turbo volvo 740's and 940's Part number-- 1389553 . These are very hard to find in good working condition. these Bendix/seimens units generally have a lifespan of around 150,000 miles. The following link is to a page where you can find out if this is the correct ECU for your car- http://epic.mcmaster.ca/~bill/volvo/database/ECU1.htm Also be sure to double check the part number off your original unit before buying. This is one of the most common no start or random stalling problems with the Bendix / Seimens / Regina cars. If yours does not have this problem, keep an extra ECU in the trunk, you might some day be glad you did... These units now have to be special ordered from most dealers new for big $$, and finding a good one second hand is getting to be a chore. Thanks for looking!