Skip the auto shop - Our mechanics make house calls

How Long Does a Cold Start Injector Last?

cold start injector

The cold start injector is also known as the cold start valve, and is an important part of keeping your engine running smoothly. The cold start injector is a fuel injector that is electronically controlled and is added to the cold air intake, which is located on the intake manifold. If engine temperature reaches below a certain point, the computer lets the injector know to add more fuel into the air mixture. This helps to enrich the mixture in the cylinders, and allows the vehicle to have an easier start.

Over time, the cold start injector can become worn and not working properly due to being used every time the vehicle starts up. When this happens, the engine will have trouble idling and will sound rough. Furthermore, the engine may stall every time the vehicle is started until it warms up.

One thing that can create problems with the cold start injector is the thermometer start interval. If this interval has been set for too long, the car will crank for a long period of time before starting. The thermometer start interval will need to be reduced when this happens. The cold start injector can become clogged by debris. When this happens, the vehicle will not start at all until the clog has been cleared. If the cold start injector’s pressure is too high, your engine will receive a lean air-to-fuel mixture. This will cause the engine to start and then stop. The opposite can happen as well. If the cold start injector’s pressure is too low, a rich air to fuel mixture will happen and cause the engine to smoke, then stop, when you try to start the car. This is a serious issue and cannot be left unattended, that’s why a mechanic should be contacted immediately to diagnose and/or replace the problematic part.

Since the cold start injector can go bad over time, you should be aware of the symptoms that it gives off before it needs to be replaced.

Signs the cold start injector needs to be replaced include:

  • The engine will not run when you take your foot off the gas pedal
  • The engine will not start or it stalls while you are trying to start it
  • The engine floods when you try to start it
  • The vehicle will not start at all

If you are experiencing any of the above symptoms, you should have a certified mechanic visit you to have your problem fixed.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
Icon-warranty_badge-02

Skip the repair shop, our top-rated mechanics come to you.

At your home or office

Choose from 600+ repair, maintenance & diagnostic services. Our top-rated mechanics bring all parts & tools to your location.

Fair & transparent pricing

See labor & parts costs upfront, so you can book with confidence.

12-month, 12,000-mile warranty

Our services are backed by a 12-month, 12,000-mile warranty for your peace of mind.

Get A Quote

Need Help With Your Car?

Our certified mobile mechanics make house calls in over 2,000 U.S. cities. Fast, free online quotes for your car repair.

GET A QUOTE

More related articles

How to Transfer a Car Title in Idaho
In order to prove ownership of a car, you must have the title. However, when a car is sold, given away or inherited, the title needs...
P2159 OBD-II Trouble Code: Vehicle Speed Sensor B Range/Performance
Diagnostic Trouble Code (DTC): P2159 P2159 code definition Vehicle Speed Sensor B Range/Performance Related Trouble Codes: P2158: Vehicle Speed Sensor B P2160: Vehicle Speed Sensor B Circuit Low P2161:...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...


Related questions

Q: Battery not charging charger

Hello. There are several reasons why your van won’t start. The battery could have a bad cell in it and not enough power is getting the can started. This can happen even if the battery is charged. There could also...

Q: Troubles starting the truck, when it's warmed up

Hello. It sounds like there could be a problem with the coolant temperature sensor not sending the proper temperature to the PCM. This will prevent the PCM from giving the right amount of fuel when the truck is warm. This...

Q: problem with starter maybe?

Hello. Will be happy to assist you. It does sound like you have an issue with the bendix gear of your starter. Possibly a starter on as last leg and or on its way out. If the starter is bad...