Re: Check engine lite says the Throttle Postion Sensor is...
The TPS is usually located on the inlet manifold at the rear of the engine.If you look at where the accelerator cable connects to the throttle housing it should be there. It's held on by 2 torx or hex head screws & has a wiring block connector with 3 wires going in to it. This connector should simply pull off when you squeeze the clasp. You didnt say which engine you have but the TPS is similar across the range. You must make sure the ignition is off when unplugging it otherwise you will generate a fault code in the Engine Managment System. Once replaced switch the ignition on for 5 seconds & then switch off. This should position the sensor ready to start the engine.
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there can be few things...first thing first
is your car missing...if yes then check plugs, any bad wire
- check for dirty fuel injectors (have u ever cleaned fuel tank) if ok then
- if u have easy access to intank fuel pump, replace its filter..
- check for bad TPS... if ok then
- check for bad O2 sensor
check your speed sensor and your crank position sensor. I did a clutch job on my RIO and forgot to plug the crank sensor in all the way and it wouldn't go above 25 Mph. If that doesn't work, try replacing your Mass air flow sensor, it sets on top of your throttle body and bolt to your air box.
Diagnostic Test Code (DTC) P0101 has a generic description of "Mass or volume air flow circuit range/performance problem". This can be caused by several things including:
> Dirty air filter > Air leak in air intake system > Contaminated, deterriorated or damaged Mass Air Flow Sensor > Poor electrical connections at the Engine Control Module, the Mass Air Flow (MAF) sensor or the Throttle Position Sensor (TPS) > Faulty MAF or TPS
You should check your air filter and air intake system visually and correct any obvious defects/leaks first.
If a visual inspection does not turn up the cause, then you will need a scan tool capable of reading sensor data to verify the function of the MAF and TPS. You will also need proper electrical diagnostic equipment to verify the integrity of the circuits and continue with diagnosis.
It sounds to me like you have replaced everything except the most likely cause of your idle control problem...The Idle Air control. (IAC) (or Idle Speed Control Valve) It is located onthe throttle body and looks like the picture below.
Mounted on the throttle body. Try cleaning it before replacing. Follow the hose from your air filter box to the intake, the sensor will be right in that area where the hose connects to the intake throttle body. It should have a harness plug.
Seems you have 'MULTIPLE' possible causes for this problem. First of all, I'd have a mechanic (a smart one) check the Throttle Position Sensor (TPS) first, Usually, the TPS does have a direct effect on trans shifting erratically. It's also used by the ECM (Engine Control Module) to calculate 'LOAD' and subsequently the Fuel Mapping (fuel to air ratio, ignition timing, etc) which could possibly create a RANDOM MISFIRE condition. This other description you have regarding 10 minutes - that one's wierd - could be a multitude of possible causes (i.e, fuel pressure not enough or too much, malfunction in the Engine Coolant Temperature (ECT) sensor, malfunction in the Intake Air Temperature (IAT) sensor. First things first - get the TPS checked - if found bad - replace it. Go from there.