TaterSalad
02-08-2007, 10:41 PM
hi, i used the search but only found stuff about rough idles.
heres whats happening. i start my car cold, it idles around 1400rpms with a small pulse from 1400 to 1300. once it warms up it goes down to 900 for long enough that if your watching the tach you see it stop for a sec, then it goes down to 100rpms, goes back up to 900 then down to 100 over and over. then if i put it in gear it will stall out.
we have checked
-plugs
-plug wires
-cap
-roter
-bat connections
-grounds
-ignition
-vacume hoses
-pcv valve
-and for gasket leaks
tomorrow i will be getting a new fuel filter and trying that.
car is 93 mazda protege, automatic.
any ideas?
heres whats happening. i start my car cold, it idles around 1400rpms with a small pulse from 1400 to 1300. once it warms up it goes down to 900 for long enough that if your watching the tach you see it stop for a sec, then it goes down to 100rpms, goes back up to 900 then down to 100 over and over. then if i put it in gear it will stall out.
we have checked
-plugs
-plug wires
-cap
-roter
-bat connections
-grounds
-ignition
-vacume hoses
-pcv valve
-and for gasket leaks
tomorrow i will be getting a new fuel filter and trying that.
car is 93 mazda protege, automatic.
any ideas?