The bottom line :
"when i start the car in the morning or when i turn on the AC, the auto-choke doesn't work and rpm go down "
last year one pin of auto choke connector as shown in pic got broke. i went to an electrician who soldered it and it worked fine. About two weeks back i got CNG kit serviced and noticed the above problem. Yesterday. i went to an electrician in pindi saddar who opened the throttle body and the auto-choke (probably the correct name is servo-kit) and after checking it with a tester and light method told me that he didn't find anything wrong in but it ain't working. Now;
-- there is no engine check light
-- everything else is working good
-- i'm not sure if the auto-choke sensor is faulty or its wiring or its connector
-- how to check auto-choke interdependently, i mean take it out and than what ??
-- there are 6 wires in its connector what currents do they carry ???
the pics (not the original pics but downloaded from net to give an idea)
pic 1 : auto-choke sensor location in engine
pic 2 : auto-choke with the connector
(pics are not loading right now)