What does a thermo time switch do?

A thermotime switch, or TTS, is a sensor used to control the cold start enrichment process in some older fuel injection systems.

How do you test a thermo time switch?

The thermo/time switch grounds the injector relay for aprox 8 seconds when cold and less time as the temp increases. The “simple” test is to connect the switch housing to ground, attach a test light to the terminal with the larger screw and to the + terminal of the battery.

What does a cold start sensor do?

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.

What does a cold start injector time switch do?

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 does the cold start valve do?

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 I know if my cold injector is bad?

Symptoms of a Bad or Failing Cold Start Injector

Hard Starting. One of the first symptoms typically associated with a bad cold start injector is a problem starting the vehicle.
Decrease in MPG. A decrease in fuel efficiency is another symptom of a bad or failing or failing cold start injector.
Engine performance issues.

What are the symptoms of a bad cold start valve?

5 Signs of a Faulty Cold Start Valve

Sign #1: Difficult Start – Delay and Hesitation.
Sign #2: Engine Does Not Start at All.
Sign #3: Engine Floods When Trying to Start.
Sign #4: Engine Starts and Then Stops.
Sign #5: Engine Smokes When Started, Then Stops.

What are the symptoms for cold start sensor?

Symptoms of a Bad or Failing Cold Start Injector

Hard Starting. One of the first symptoms typically associated with a bad cold start injector is a problem starting the vehicle.
Decrease in MPG. A decrease in fuel efficiency is another symptom of a bad or failing or failing cold start injector.
Engine performance issues.