Can you clean O2 sensors with brake cleaner?
Can you use brake cleaner to clean o2 sensor? DO NOT use any solvent/cleaner that is not labeled ‘O2 sensor safe’, they are damaged by any raw petrochemical, be it carb cleaner, brake cleaner, grease, or even fuel. They can easily be cleaned by heating them up and burning off the contaminants.
How does a cold start fuel injection system work?
Older fuel injection systems often have an additional “cold start” injector that aids starting by sprayign extra fuel into a cold engine when it is first cranked. A “warm-up regulator” provides additional fuel enrichment while the engine is warming up.
How does the throttle body injector work in a car?
Air is delivered to the engine through the throttle valve. This throttle valve operates like the throttle valve on a carburetor–as the throttle is opened, more air is allowed to enter the engine. Where the throttle body injector differs from the carburetor is in the area of idle control.
Why does the idle go up after cleaning the throttle body?
The idle is going to be high at first until the computer relearns the idle again. Cleaning the throttle body allowed more air to enter the engine, and the computer is compensating by adding more fuel.
What happens when the throttle gets stuck in an open position?
When the throttle gets stuck in an open position than your vehicle will receive too much air and cause it to have a high or fluctuating idle. What are signs of a bad Throttle Position 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.
Where is the cold start injector in a car?
If the test results are inconclusive, have the system checked by a dealer service department. Check: (This check must be done with the engine cold.) Start the engine and, using the procedure described in section 20, listen to the cold start injector (located on the air intake chamber).
Where is the fuel injection sensor on a Volvo?
Replace the 02 sensor if needed. Go to the right inner fender well (740’s) or the left inner fender well (240’s) and find the red and white pigtail that sits besides the ignition ECU. This is your idle speed test point.
Is there a click when the throttle is closed?
There should be no click from the Throttle Position Switchon the rear side of the throttle body when the throttle is closed. Then insert a .15mm feeler gauge. There should be a click from the TPS when the throttle is closed. If these are incorrect, then adjust as below. 5. Adjusting the TPS.
What do you need to know about fuel injection?
Fuel Injectors: Injector Cleaning Injector Seals Injector Diagnosis Cold Start Injector Homemade Fuel Injector Cleaner Troubleshooting: Vacuum Leak Diagnosis Vacuum Hose Replacement Fuel Pump and FI Relay Diagnostic Tests Idle Air Control Valve PTC Nipple in 90+ Turbos Fuel Pressure Regulator Testing or Repairing Bad Fuel Injection Relay