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Re: Wont stay idled
It is located on the top of the engine near where the throttle cable is located.You can purchase a repair Manuel with detailed instruction on you vehicle.Haynes or chilton repair manuals are around $25.
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This should be a drive by wire vehicle meaning it has a cable for the throttle body. First thing would be to see if any error codes can be pulled up (most parts stores will do that for free.) Drive by wire versus the late model that use electronic control for the idle have a IAC or idle air control which when first started controls the idle air intake--all air is run by it to idle the vehicle when cold--
Usual symptoms are rather high idle when cold engine or even idle and RPM jumping up and down and stalling when cold.
Another way if idle does drop when cold is tapping the gas--engine will still run until hot. Means not usually a fuel pump issue.
You could also have if the vehicle is fuel injected a dirty Mass air flow sensor, a throttle position sensor, etc.
These can be if the vehicle has them cleaned using a special zero residue spray cleaner.
First have it scanned to see what if any errors it shows--the computer.
I guess I will start with asking why you changed the crank sensor and the TPS ? Usually when the engine is stalling at stop signs the problem is a dirty throttle body or a problem with the idle air control valve. If the check engine light is on it should have a code unless the PCM is failing. I would try another scanner next to make sure the computer does not have any trouble codes.
Sounds like throttle position sensor to me. It will let engine go dead instead of maintaining an idle rpm. Try disconnecting battery,and after leaving disconnected for a couple of minutes,crank vehicle and maintain a steady rpm with gas pedal. Doesn't have to be revved up high just steady. Called relearning tps. Sensor might be bad but I would try this before buying a part first.
Check the idle air control valve its right on the front of the throttle body it may be stuck closed and not allowing air to bypass the throttle plate to allow the engine to idle, do you have a check engine light on at all, there could be a number of sensors that could have a problem not allowing the engine to idle when the throttle plate is closed like the idle air control valve, throttle position sensor......
The throttle position sensor,and the idle air control valve would be my guess at this point.Ohm out the throttle position sensor,to see if it has a dead spot,if so,replace it,if not,replace the idle air control.
The Throttle screw is located on the throttle (obiously) its in a clinderical shaped channel located on the throttle just oposite or obliquely opposite the the throttle body position sensor. In some mazda vehicles (IN TRINIDAD) you need to loosen the throttle body position sensor and slightle adjust it eighter to the right or left to tuen the idle (For electronic controlled axcelleration) in some cases it can be adjusted via an ODB2 diagnostic tool (only in some vehicles that has electronic controlled axcelleration)
You can tell what type your vehicle is by looking for an axcelleration cable connected to the throttle body. If the throttle body has a cable it isnt electronically controlled and has an idling screw. If there is no cable but wires to the position sensor its electronic.