VW/Audi ECU 100 90 5 cyl non turbo - Quattro or non 85 86 87 88 89 90 91

Up for sale is a Working, in excellent condition 1990 Audi 100 ECU. VW/Audi part number 443 906 264 F (443906264F) , Bosch part # 0 280 800 308 (0280800308). This ECU should fit the following models: *AUDI, 80 QUATTRO, Base, 1990-1991 *AUDI, 80, Base, 1990-1992 *AUDI, 90, Base, 1990-1991 *AUDI, 100, Base, 1990-1991 *AUDI, CABRIOLET, Base, 1995 Check the part number off your original to be sure if this is right for your car. If it's not, search my store I probably have the one you need. This comes with a 30 day replacement or refund guarantee.Though usually fairly reliable, ECU's can easily be damaged by faulty wiring, voltage spikes caused by a bad alternator, a battery charger or jumpstarting just to name a few. Sometimes a failure is simply age or mileage related. 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. These units now have to be special ordered from most dealers new for big $$ (often times over $1000!), and you can never find one when you need one. Even now finding a good one second hand is getting to be quite difficult as these cars get older.