What does a start injector time switch do?
This Time Switch tells the Cold Start Injector when to fire. It is located under the throttle body on the lower intake manifold, right next to the ECU coolant temperature sensor (not the gauge temperature sensor).
What is cold start injector switch?
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 test a thermo time switch?
You can install a test lamp in series with the wire to the thermo-time switch, disable the ignition, and crank the starter. The lamp should light but then go out in a few seconds of cranking. The switch can also be tested for resistance between the two terminals.
How does a thermo time switch work?
A thermotime switch, or TTS, is a sensor used to control the cold start enrichment process in some older fuel injection systems. A small heater coil is built into the thermotime switch, which effectively gives a timed output to the cold start injector with the timing duration dependent on the temperature of the engine.
How do you remove a cold start injector?
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.
When to test your cold start injector switch?
test yours before buying….. If your trucks cranks excessively (more than a few seconds) when it is cold, and you don’t get “fast idle”, check this switch. Most people seem to think it’s the actual cold start injector that failed, but 98% of the time it’s this switch that has failed. It is the most common reason for both problems.
Where is the cold start time switch located?
Cold Start Time Switch: This Time Switch tells the Cold Start Injector when to fire. It is located under the throttle body on the lower intake manifold, right next to the ECU coolant temperature sensor (not the gauge temperature sensor).
What happens if the cold start injector leaks?
If the cold start injector leaks at the nozzle, and allows fuel into the intake this will cause an excessively rich mixture. This leak will result in a decrease in fuel efficiency, and in some cases performance and acceleration.
What do you call the cold start valve?
The cold start injector, also referred to as the cold start valve, is an engine management component found on many road going vehicles.