Hi everyone! I need help how to fix my idling issue to my lancer 2004 1.3 manual tranny.
i already checked my TPS, IAC, injectors, coil packs (im not sure if i checked it right though) pressure regulator,map sensor, coolant temp sensor and also replaced gasket for valve cover and intake manifold gasket but still the idling about 3000rpm didnt change.
i already ordered scanner but i need help from the experts here where to start troubleshooting bout this issue.
thanks everyone and i hope i somebody could help me!
Have you cleaned the throttle body?
Yes it is, i also replaced a new throttle body assembly but nothings change.
Most likely the IAC valve needs cleaning or replacement.
Iac valve is new. I also cleaned EGR. i tested everything by pulling out the harness connector of each sensor (iac & tps) but nothings change.
Did you look for vacuum leaks?
Tried everything and no luck.
If you checked everything and still there is issue with idling, you may have problems with the car computer.
Obviously, you haven't tried everything because you still have the problem.
1 more thing i noticed, when i open my ac my rpm drops gradually until my engine dies? Could it be possibly the alternator?
How, exactly, did you "check" all this stuff if you said you did not have a scanner yet?
I replaced each parts that i mentioned in the post except for the coil packs.
And i think theres nothing wrong with coil as my car dont have problem starting
The "parts cannon" approach rarely works.
By replacing each parts