What is the throttle position sensor on a Mercury 150 175?
What is the throttle position sensor on a Mercury 150 175?
This troubleshooting information is meant to help trace and correct faults relating to the throttle position sensor on 2000+ Mercury 150 175 200 horsepower EFI engines with a starting serial number of 0T409000 and above. A throttle position sensor, or TPS, is a device which is used to monitor the air intake of an internal combustion engine.
Can a bad check engine light be a bad TPS?
The check engine light will randomly turn on and off even if the car is running smoothly without any jerks and stalling. This is often the first ever symptom of a bad TPS. Using a code reader, you should be able to confirm whether a faulty TPS is the culprit or a different component.
How can I check the throttle position sensor?
TPS settings can be monitored with the digital diagnostic terminal by way of the ECM but the TPS cannot be adjusted. When powering the engine from idle to wide open throttle the voltage change should occur without erratic behavior.
What are the symptoms of a bad TPS?
Below are common symptoms of a faulty TPS. In most of the cases, all of these symptoms will show together making it easier to detect the faulty component. Jerking or bucking of the vehicle is the most common symptom of a bad TPS.
This troubleshooting information is meant to help trace and correct faults relating to the throttle position sensor on 2000+ Mercury 150 175 200 horsepower EFI engines with a starting serial number of 0T409000 and above. A throttle position sensor, or TPS, is a device which is used to monitor the air intake of an internal combustion engine.
What are the symptoms of a bad throttle position sensor?
A faulty throttle position sensor sends incorrect information to the ECM resulting in various issues in the engine, its performance, and fuel economy. Below are common symptoms of a faulty TPS. In most of the cases, all of these symptoms will show together making it easier to detect the faulty component. 1) Car Jerks
How is the throttle position sensor similar to the human brain?
A throttle position sensor is similar to the motor cortex in the human brain, it controls one of the most important components of the car that keeps your engine running like a throttle body.
What happens if you have a bad TPS sensor?
Acceleration issues: A bad TPS may cause all sorts of power issues. Your engine may start up but it will have little to no power and it causes it to shut off. On the other hand, it can also cause your car to have spontaneous accelerations even if you didn’t step on the gas.
How to reset the throttle position sensor on a Ford F150?
I’m told there is a sequence of turning the key on and off and pressing the gas pedal down to open up the throttle position sensor on the 2004-2008 model 5.4L’s?
How much does it cost to replace a throttle position sensor?
If you need to have your throttle position sensor replaced, the cost will depend on the type of car you have. But the average cost of this replacement job isn’t that expensive. The parts will cost you between $75 and $130 on average. The labor costs will be anywhere between $60 and $90, depending on the hourly rate of the mechanics.
What happens when my throttle position sensor goes bad?
What happens when my throttle position sensor goes bad When a TPS goes bad, then the car’s throttle body won’t function properly. It could either stay shut or it won’t close properly which is a severe issue. If it stays shut then your engine is not going receive air and it won’t start.
Where is the throttle arm on a Mercury?
When the engine is activated and begins to run, make sure the throttle arm on the Mercury outboard engine is against the throttle stop screw. See image below for throttle arm location. Do not move the fast idle control lever or throttle forward. Perform a careful examination to the throttle cable and and make any adjustments if necessary.
What causes hard starting and rough idle on a Mercury?
Faulty Air Temperature Sensor: Will cause hard starting and rough idle. Air temp sensor should be checked with an Ohm Meter with a Cold Start Ignition Test. *ACU and PCU only. Incorrect fuel pressure: Can be caused by a bad fuel pressure regulator, or restricted return. On Laser EFI motors, look under the Fuel Pressure Regulator.
Faulty Air Temperature Sensor: Will cause hard starting and rough idle. Air temp sensor should be checked with an Ohm Meter with a Cold Start Ignition Test. *ACU and PCU only. Incorrect fuel pressure: Can be caused by a bad fuel pressure regulator, or restricted return. On Laser EFI motors, look under the Fuel Pressure Regulator.
Why is my MerCruiser EFI stalling at idle?
Mechanic sent ECU files over to Mercruiser for diagnosis. They couldn’t find anything wrong, but suggested it might be injectors. Checked injectors at throttle body. They work fine. On chance, he had a second throttle body in the shop. He replaced mine with that one, including injectors.
