How do you measure alcohol content in fuel?
How do you measure alcohol content in fuel?
Figure Out Alcohol Content Just take the number of milliliters at the separation line and subtract two milliliters — which was the amount of water we added. Take the number you get and multiply it by 10, and that is the percentage of alcohol in the gasoline.
How do you reset the long term fuel trim on a Chevy?
To perform a PCM reset…
- Bring car up to normal operating temp.
- Turn ignition off.
- Remove ECM main fuse.
- Turn ignition to “on”, do not start.
- Wait for system check to complete, numerous errors will be detected.
- Turn ignition off.
- Replace fuse.
- Turn ignition to “on” and wait for system check.
How do I check my fuel trim?
Use Fuel Trim to Diagnose Vacuum and Fuel Delivery Leaks. With the engine idling, look at the Short Term Fuel Trim (STFT) and Long Term Fuel Trim (LTFT) values. Normal range may be high as plus or minus 8, but closer to zero is best. If the numbers are +10 or higher for STFT and LTFT, your engine is running LEAN.
Why is my long term fuel trim high?
What causes a high long term fuel trim? Here the PCM/ECM is basing fuel delivery on feedback from the engine’s mass airflow (MAF) or manifold absolute pressure (MAP) sensor. Any air leak that occurs AFTER these sensors is a leak that’s allowing UNMETERED air into the engine
How does long term fuel trim work?
Long Term Fuel Trim Long-term fuel trim relies on sensors further downstream in the exhaust system, past the catalytic converter. While the sensors’ signal will fluctuate frequently upstream, where short-term fuel trim is measured, the signal at the sensors further down should be fairly constant
Can vacuum leak cause rich condition?
A vacuum leak can cause a rich condition and raggedy running. If the leak is medium, the ECU will detect something is wrong and run in one of its mapped safety modes. Most likely will not show a CEL
How much does it cost to replace transmission sensor?
The average cost for transmission position sensor replacement is between $240 and $292. Labor costs are estimated between $125 and $157 while parts are priced between $116 and $134. This range does not include taxes and fees, and does not factor in your unique location. Related repairs may also be needed.
How do I know if my transmission pressure sensor is bad?
Symptoms of a Bad or Failing Transmission Oil Pressure Switch
- What is the transmission oil pressure switch?
- Vehicle enters “limp” mode.
- Vehicle has difficulty shifting.
- Engine RPM is higher than it should be.
How do you fix a faulty speed sensor?
Replacing Your Transmission Speed Sensors
- Having found the sensor or sensors to be faulty, remove the connector between the sensor and the vehicle’s wiring.
- Using the proper socket, remove the faulty sensor.
- Connect the new sensor to the vehicle’s wiring.
- Install the new sensor.
- Lower your car.
- Start the engine.
How much does it cost to fix a speed sensor?
To replace the speed sensor, you are going to pay, on average, between $330 and $380. The labor should only cost you between $80 and $100, while parts will run you about $265.