Ford 2.3L 4 cyl  Engine control unit 

• 1995
  Ford Ranger
  (2.3L, Automatic)
  Electronic Control Module
   Ranger '95-96 Elec Cont Unit (ECU); 4-140 (2.3L), AT, ID F57F-CCD
• Mazda B-2300 '95-97 Elec Cont Unit (ECU); (R. Rr firewall), AT, ID F57F-CCD
  
  *Match  #F57F-12A650-CCD

Up for sale is a Working, in excellent condition Ford ECU As you probably know, this is a pretty hard one to find "good used" at a reasonable price. As always your best bet is to match the part number to the one on your original ECU. 

These are usually fairly reliable, however can easily be damaged by wiring faults or voltage spikes (caused by a faulty alternator). Sometimes a failure simply happens due to corrosion or high mileage use. A faulty ECU can cause problems ranging from a bad idle control circuit to random no injector pop signal (causes no start or random cut outs) & many others. Comes with a 30 day guarantee.