Merkur E5ZF-12A650-K3B / E5ZF12A650K3B EEC-IV Turbo ENGINE Computer Up for sale is a good working Engine ECU that should fit Merkur models . Part number listed at top This was from a crash damaged 1987 model year XR4Ti should also fit 88's. This was from an automatic car, so it should fit BOTH auto & manual trans cars.This unit also comes with a 30 day functionality guarantee! This is located on the passenger side right kick panel.This unit from the ePartsland "rare as hens teeth collection!"***!!!RARE ECU ALERT!!!***A faulty ECU is one of the most common no start or random stalling problems with these cars. These can also cause issues with erroneous check engine lights, idle control problems as well as emission control & cold or hot start problems. I have also seen fuel pump relay turn on faults (ECU won't turn on the fuel pump), as well as an condition where the high speed injector driver has failed. This causes the car to sit and idle fine, but it won't accelerate.If your car does not have these issues but you intend to keep it a while, I recommend our customers keep an extra ECU in the trunk. If you need to buy a NEW unit, these typically have to be special ordered from most dealers which may take over a week, and topical cost is over $1000. I'd recommend you Keep a spare, right next to your spare tire considering this fact. If you need one of these units now, you probably won't beat this price for a good used unit with a 30 day functionality warranty!