I think my cold start injector may be beached. I have no High idle when cold whats so ever. How can I test the injector? How can I check to see if it's getting the signal to open when cold?

Next is the idle when I kick the heater on. When it's fully warmed and idling at 750 right where it should be, I turn the heater blower on and it pulls the idel down and starts to shake like I just gave the engine a vac leak, turn the blower off an it cleans right up and every thing is dandy. If it matters, my blower only works on hi. It does not seam to matter where the heat is set, as in defrost or not, and does not do this when any other electrical load is applied, just the blower motor.

 

Year? Engine? Transmission? Car? Truck? Dog? Cat?

 

Sorry, 89 pickup 4wheel drive, 22RE, 5 speed manual.

It's dogs, I hate cats.

 

http://www.ncttora.com/fsm/1993/engine/29coldstar.pdf
and
http://www.ncttora.com/fsm/1993/engine/39colds.pdf
from here...
http://www.ncttora.com/fsm/1993/index.html

 

Hahaha

 

Find the test for the heater blower motor resistor in the FSM. That will cause it to be unable to very the voltage to the motor.

 

One thing at a time....

The cold start injector is only there to squirt some fuel in while you're cranking the engine over to start it. It should shut off just after the engine starts, so don't blame it if the engine runs like crap once it's running.

If you have cold start issues, the first thing you have to do is make sure it runs properly when it's warmed up- coolant above 160F, etc. Then you figure out why your IAC/AAV isn't working.