90 Tracker strange intake noise with electrial load increase

my 90 Tracker W/auto /AC does some strange things, at idle engine runs smoothly until Heater or Lights are turned on.Then a clicking or popping sound comes from TBI (quite loud if air filter intake is off) I've heard other people have had this but haven't heard cause or cure. Also some times driving, backing off the gas and then slowly depressing gas pedal it will seem to cut out then be fine again. Any help with these 2 problems would sure be appreciated.

my 90 Tracker W/auto /AC does some strange things, at idle engine runs smoothly until Heater or Lights are turned on.Then a clicking or popping sound comes from TBI (quite loud if air filter intake is off) I've heard other people have had this but haven't heard cause or cure. Also some times driving, backing off the gas and then slowly depressing gas pedal it will seem to cut out then be fine again. Any help with these 2 problems would sure be appreciated.


1.Check and make sure your sparkplug wires aren't arching somewhere.

2.Pull the cap off the fuel injector pull out the injector and replace the o-ring at the bottom. then make sure you put the cap back on tight and try it. Fixed mine.

3.It may be a posibility your injector is about to go out. Get a chiltons and read how to test the fuel injector to see if it is in spec.