What is the idle RPM for Mazda Protege 99 1.6L?

It should be 650-750. Up to 800 with a/c on.[/Quote:7ee72985ce]
THANK YOU FOR YOUR HELP! CAN YOU TELL ME HOW TO ADJUST THIS? BECAUSE LIKE I SAID MINE IS UNDER 500 ADN THE A/C DOSE NOT CHANGE MUCH!

It should be 650-750. Up to 800 with a/c on.[/Quote:40dad4a321]
THANK YOU FOR YOUR HELP! CAN YOU TELL ME HOW TO ADJUST THIS? BECAUSE LIKE I SAID MINE IS UNDER 500 ADN THE A/C DOSE NOT CHANGE MUCH![/Quote:40dad4a321]

The computer controls the idle on your car. It uses the IAC valve to control the idle. You can check the resistance of this valve as follows.
Disconnect the negative battery cable.
Disconnect the IAC valve connector. Resistance: 7.7 - 9.3 Ohm [23 °C (73 °F)]
Measure the resistance between the IAC valve terminals by using an ohmmeter.
If not as specified, replace the IAC valve.
If the resistance is correct, then I would suspect a dirty throttle body or maybe a bad sensor input.
NOTE: if you try and clean the thriottle body, use only sensor friendly solvents and dont spray directly on any sensor, or electrical component.
Let me ask you this. Does you car run good other than idle? If not, you might want to check your fuel pressure system for supplying proper pressure.
Good luck[/quote:40dad4a321]
THANK YOU. THE PROBLEM THAT I HAVE IS THAT THE CAR IS NOT SHIFTING IN TO GEARS ALL THE TIME. SO I SUSPECTED THE IAC. I CLEANED ALREADY THE MAF BUT WITH NO EFECT. THIS IS ON AND OF. SOMETHIMES IT SHIFT AND AFTER A WHILE IT DOSE NOT SHIFT. IT STAYS IN THE 2ND GEAR I THINK. SO I DO 40 MPH @ 3000RPM!
I AM GOING TO TRY TO CLEAN ALL THAT BECAUSE THE GUYS FROM AAMCO SAID IT IS NOTHING WRONG WITH THE TRANSMISION! ANY IDEAS?
THANK YOU VERRY MUCH!