What is a cold start solenoid?
The cold start injector, also referred to as the cold start valve, is an engine management component found on many road going vehicles. It’s purpose is to supply the engine with additional fuel to enrich the fuel mixture in cold temperatures where air density is increased and additional fuel is required.
How do you replace a cold start valve?
Part 1 of 1: Replacing a cold start injector
- Materials Needed.
- Step 1: Locate the cold start valve.
- Step 2: Clean the surrounding area.
- Step 3: Disconnect the electrical connector.
- Step 4: Put on your safety glasses.
- Step 5: Disconnect the fuel line.
- Step 6: Loosen the hose.
- Step 7: Attach the new cold start valve.
Can you clean a cold start valve?
Once you have found the valve, clean the area around it so you don’t get any debris in the manifold. Just hose down the area around the cold start valve with the aerosol can and let all the crud run right off.
What happens during a cold start?
Summary: During cold-start, a car engine emits far more particulate matter and other pollutants than during warm conditions. This is because a cold catalytic converter is much less efficient at low exhaust gas temperatures.
Where is the cold start injector switch on a Fiero?
This sensor screws into the intake manifold horizontally and has a two wire connector. Cold Start Injector Switch Located next to the thermostat housing. This switch screws into the intake manifold vertically, next to the thermostat housing and the fan switch.
Where is the coolant fan switch on a Fiero?
Coolant Fan Switch Located next to the thermostat housing. This switch screws into the intake manifold vertically, next to the thermostat housing and the cold start injector switch. It has a one wire connector. Temperature Gauge Sending Unit Located on the top corner of the rear cylinder head.
When to use the cold start injector in a Pontiac?
PONTIAC SERVICE MANUAL: “The cold start valve is used to provide additional fuel during the crank mode to improve cold start-ups. This circuit is important, when engine coolant temperature is low, because the other injectors are not pulsed “on” long enough to provide the needed amount of fuel to start.
Where is the temperature gauge on a Fiero?
Temperature Gauge Sending Unit Located on the top corner of the rear cylinder head. This sending unit screws into the corner of cylinder head, near the ignition coil and the valve cover.