2005 Toyota Corolla "unstable idly speed" Questions

...unstable engine, missing on idle and at high speed do a compression test to make sure the cylinders are in balance. if the compression is good,change the plugs wires cap and rotor. also air ...

...unstable engine idle speed clean the throttle body and idle air control valve with reg carb cleaner ,do not spray the mass air flow sensor. Clean with a rag soaked in the cleaner, have someone hold ...

unstable engine rpm: - Vacuum leak at intake manifold or Cracked intake manifold. - Idle speed control valve is not re-learned. - Weak cylinder compression or intake valve clearance is too low. - Mass

speed or have an unstable rpm but not die. It could be something as simple as a sticking vacuum valve or EGR valve that may clear with a bit of normal use. Your going to find out for sure when you get

...speed Unstable Start in morning at -15 C, Idle speed 500 rpm and unstable,shake, black smoke,depress accelerator then ok. run fault codes and check for ambient temp sensor and/ or MAP/MAF sensor ...

...it's a bit better, but still unstable??? check for vacuum leak from vacuum hose,gasket & pipe around the engine area,if it is everything is ok"IAC control" is the problem.it call Idle speed ...

rpm unstable My 1995 acura integra rpm is unstable (engine will rev up and down uncontrolably). Your Idle speed control or ISC needs to be replaced. Check for vacuum leaks.

unstable idling when A/C is ON the idling is going when it comes to a stop Do the throttle body cleaning and re- learn the idle speed control. Let it idle for 10 min.

Unstable idle 2002 Kia Rio The first thing I would do is clean the throttle valve and the idle speed control airbyapss valve, these parts get sludged up and cause stalling and surging idle problems.

...speed is computer controlled and not adjustable as there is no linkage or throttle cable, it is a drive-by-wire motor controlled by a potentiometer at the pedal assembly. If there is an idle problem, ...