Can bad timing cause rough idle?
An engine slightly out of time can idle roughly since the spark is not in sync with the cylinders. Too much timing advance or retardation causes serious drivability problems. Many problems may upset timing. However, the most common is an overstretched timing belt or chain, or a bad tensioner after miles of operation.
Why does my 22re idle up and down?
could be a vacuum leak or something like that causing it to race. most likely its you air mixture screw or the timing advanced too much. if you adjusted the idle on the actual throttle linkage on the idle screw you need to adjust the tps sensor to the correct specs.
Why is my Toyota truck idling at high RPM?
Tech Tips: If the Engine Control Module (ECM) sees high RPM and closed throttle when warmed up a little bit, the ECM goes into deceleration fuel cut and cycles the fuel injectors off causing the surge.
Why does my Toyota pickup engine stall when warm up?
When the engine gets warmed up and im drivin everytime from 1st to 5th gear it wants to bog when I accelerate ive changed the fuel filter spark plugs wires distributor cap and even put cleaner in my gas tank but it still continues to bog down Runs fine, then when warm it idles rough until it stalls intermittently.
Why does my car idle in fuel cut mode?
Symptom: Idle surge with the brake applied. The vehicle is actually in fuel cut mode. Problem: The idle speed is too high, and the engine control module (ECM) goes into fuel cut mode. Test & Fix: The first step is to make sure the auxiliary air valve is closed when the engine is hot.
What kind of problem does a Toyota 4Runner have?
I have a 1994 Toyota 4Runner 3VZ-E (V6) SR5 with 192K. Recently, it started having problems idling (cold or warm). Symptoms are loping idle from ~200rpm – 1000rpm. Problem comes and goes and does not seem related to the engine temperature.