I have a 95 blazer and it is running horible. it starts hard, idles rough and coughs and sputters when I drive at all speeds. i was told it was the injector controls on the top of the motor, is this true.
It's totally possible. The single injector thing has always had me bewildered... If it's not bad, then it might just need a thorough cleaning. I would also go and check out the O2 sensor, as that seems to be the cause of a lot of problems on S-10's...
Throttle position sensor could do that... If it senses the wrong throttle position it'll either flood the engine or starve it for fuel since it'd be tricking the computer into thinking it had more or less throttle than it should. [img]/wwwthreads_images/icons/crazy.gif[/img] But then again I'm not the injection guru either... [img]/wwwthreads_images/icons/crazy.gif[/img]
These particular motors are very sensitive to fuel pressure, and can cause the problems that your talking about. I would check that first. The injectors are also very prone to go bad. They came out with an improved one.