Need sugguestions and ideas!!!!

[chadarmuth]

I have an 87 4x4 with the 22RE engine and my mechanic tells me the ECU has gone out because the injectors are not receiving a ground pulse and thefore not injecting fuel into the engine. The cold start injector functions and the truck will start and run for about one second and then die. Does anyone know how to check and make sure its the computer before I order one, and second where can I find the best price for an ECU? Thanks all for the info in advance it is much appreciated and needed

[jimbo74]

ecu's usually dont jsut go out...... especially since it starts up at all....... when an ecu fails, you get aquat.... i say you have a bad ground connection somewhere...... try to find a used ECU, a new one will be rare and major $

[BUDDERS]

How about the injector resistor?  It's on the right side fender, just behind the fuse box.

[79coyotefrg]

if the ecu is bad doesnt it throw a code like 1 blink = code 1 aka  ecu is bad

[Duffil]

no. almost all codes thrown *can* point to a bad ecu, but it is rare. 1 blink is system normal.

try swapping in a known good unit and see what happens.