QuestionQUESTION: runinig very rich when cold or hut also when cold idles up and down untill you shift into gear
ANSWER: need more information
how many miles, any service records, sudden onset?
My first reaction is injectors - probably one or more leaking , could be cold start vavle as well. Idle hunt is usually your auxillary air valve malfunction
---------- FOLLOW-UP ----------
QUESTION: is there a repair kit for injector car has 110,000 original miles. where is the auxillary air valve located
Answerno they need to be rebuilt and (pop) bench tested . I use withchunters. You can also by refurbished ones
The AAV is the valve that sits in front of the engine, has a large screw on top , sits about the thermostat
functions to allow air in at start up, should close as it warms up. Many times it stays open and allows too rich a mix and also can cause RPM to ramp up and down.
Look for any loose hoses ( vacuum) particularly the one off the can like apparatus on the drivers fender well
