yes. you can clean your throttle body by taking the intake hose off and having a buddy open the throttle plate for you while you spray it with carb cleaner. sometime you will need a whole bottle to clean it and den wipe it down and keep the plate open until it dries.
Isuzu uses the spark plug as a sensor of the burn efficiency inside the cylinder of the engine. Use of the wrong brand plug can cause this misfire code in a good running engine. Otherwise perform tune up to repair misfire
Could be, spark plug(s), contaminated fuel (water),
Misfire is caused when a cylinder doesn't ignite its fuel mixture. Suspect a bad plug, coil, or wire. This will not be caused by a mass airflow sensor, that can cause a rough idle or bad fuel economy, but will not cause an individual cylinder to misfire. Driving with a continuous misfire condition will eventually destroy your catalytic converter. If your check engine light is flashing you are doing serious damage to your cat converter.
It's an automatic idle, the motor needs to run at a higher RPM for a few moments to lubricate the valves and pistons, perfectly normal operation.
First check your throttle body sensor and then your (iac) motor. Last but not least it could be your plenum gasket or a leak in your vacuum system
Misfire is usually caused by faulty spark plug wires or spark plugs or both. I don't see the throttle body causing misfire.
Terrorists
If you have a "check engine" light on, start with having the codes read. A misfire code can tell you which cylinder or cylinders are having problems. A misfire could be the cause of your engine vibration.
An intermittent crankshaft sensor will not let the engine fire the correct times. This can definitely cause a misfire for the engine.
Do a proper diagnosis to figure out the cause of the misfire, then repair it.
Yes
An engine computer does not cause a misfire but merely reports it. The misfire is probably caused by the ignition coil or plug wires
Anything that could cause a cylinder misfire can cause the check engine light to flash. A restricted fuel filter is one.Anything that could cause a cylinder misfire can cause the check engine light to flash. A restricted fuel filter is one.
throttle body
the way a rx7 engine misfire can be cause by having bad spark plugs or either wires. The timing is incorrect and needs to be adjust. it can be adjusted by using a timing light. another factor that can cause misfire is having your throttle position sensor(TPS) out of wack. it is located right on top of the water pump housing. there is a write up on fixing this on http://fc3spro.com/main.html
Yes, water can cause a misfire, which will cause the check engine light to flash.
The year, make and engine info would help us help you.