Throttle custs out for a split second then resumes.like nothin happend

ANSWER : You should have the vehicle computer scanned to see if there are any codes stored that may cause this problem. If there is no codes then have the computer data monitored and recorded when the problem happens to see if the throttle position sensor or another sensor caused the issue. If you would like to have this checked, a certified professional from YourMechanic can come to your location to diagnose the intermittent cutting off of the vehicle.

ANSWER : This suggests you may have a bad throttle control actuator. This is a module near the intake that operates the opening and closing of the throttle plate. This works in conjunction with the throttle position sensor which monitors your gas pedal position. When the electronic throttle control actuator is not working properly, this will cause the type of problem you have where the throttle plate will not move according to the inputs from the throttle position sensor.

I would recommend having an expert, such as one from YourMechanic, come to your home to determine why your car is starting and then dying in the way you have described, and what problems there may be with the throttle.

ANSWER : The engine running rough for a moment after using throttle body cleaner is a normal symptom. This should only last for a short period of time and then go away. If the issue does not go away after a few start ups or a short drive, it is possible that the throttle position sensor or mass air flow sensor could have been damaged as a result of using the throttle body cleaner. Many throttle body cleaners will specify if they are sensor safe. IF the throttle body cleaner is not sensor safe, one of the sensors may be fouled out. I would recommend having a drivability inspection performed on your vehicle to determine the exact cause if this issue persists. Consider YourMechanic, as a certified technician can come to your home or office to determine the cause of this issue.

ANSWER : Without having the specifics on the vehicle and engine type, I can only give you a general direction to take. You may have an EGR system fault. EGR – Exhaust Gas Recirculation –
is designed to prevent knock, ping, and misfire under light throttle loads to help keep the combustion chambers cool. Since the exhaust gases have already been burned, they are cooler than the combustion chamber during ignition.

This prevents pre-ignition misfiring and it does not function at full throttle. A stuck/ inoperative EGR valve can contribute to the problem. Also, if any EGR tubes or passages are clogged with carbon due to age and mileage, the EGR "loop" will not function. I recommend having a certified mechanic, such as one from YourMechanic, come to your location to determine if the EGR valve needs to be replaced.

ANSWER : If the engine is equipped with a throttle body injection system, then you should disconnect both injector harnesses and then turn the engine on to see if it looks like the injectors are putting fuel into the engine or the engine will still start and run like it did before. If it is, then your pressure regulator is leaking on the throttle body if you do not see the fuel injectors leaking fuel. The injector seal o-rings should be replaced if you see fuel coming from the injectors with them disconnected. The most common cause is the fuel pressure regulator diaphragm leaking fuel and needing replacement. If you want to have this looked at, a certified technician from YourMechanic can come to your car’s location to diagnose your car’s starting issue and let you know what repairs to proceed with.

ANSWER : Remove the intake hosing to the throttle body and start the engine with the parking brake on and the transmission in park. Have someone throttle the engine as a snap throttle (to the floor and back very quickly but not to rev up the engine) and see if the throttle plate is moving or if it gets stuck. If the plate gets stuck, shut the engine down and clean out the throttle plate and open it with a long pry bar or screwdriver. This is so the plate can move and see if its sticking or not. If the plate is not sticking, then the throttle position sensor maybe out of adjustment and needs adjusted or replaced. If you need further assistance with your engine throttle sticking, then seek out a professional, such as one from Your Mechanic, to help you.

ANSWER : Hello. The meter setting will depend on what BBK requires you to set the throttle body at. If the setting is voltage related then you need to set your meter to DC volts. That is usually what they recommend. If it is a resistance reading that they need you will set it to Ohm’s. If this is something that you would prefer to have done, consider YourMechanic, as a certified mechanic can come to your home to adjust this and insure a proper replacement of your throttle body.

ANSWER : Hi there. Check the resistance on the throttle position sensor on the throttle body and the throttle pedal position sensor on the gas pedal. There should be a resistance on the sensors. If one or both sensors have no resistance or have a really high resistance, then I recommend replacing that or both sensors. If you need further assistance with your throttle body service message, then seek out a professional, such as one from Your Mechanic, to help you.