1986 fiero GT poor idle

[robert n]

[Hi all,
My fiero doesnt idle well, Its OK when it first starts but proceeds to slow down and will eventually stall. It starts up but will stall with any load ( like putting it in gear)
I have replaced the EGR valve and the MAP sensor and fixed a couple of vacuum leaks. Its still the same
I dont get any trouble codes and I do get code 12 when I ground the test terminal
It runs great as long as you give it some throttle.
HELPSHIZE="4"][/SIZE]

 

[Oreif]

Since it starts and runs fine cold then dies out, I would check the cold start injector.
When facing the back of the car, the cold start injector is on the left hand side on the lower intake manifold. It will have a metal line running from the fuel rail above it.
Over time these can leak. when cold they run fine but as soon as the engine warms up a little the excess fuel causes it to run too rich at idle.