Q: injectors only spray 3 times and quit.

asked by on

Truck ran fine when we parked it,, went to start the next day, it fires, runs for a second and dies. injectors only flash with test light 2-3 times. engine light not on, and no codes found. have tried changing ECM with one from salvage yard but no change. any ideas?

My car has 186000 miles.
My car has an automatic transmission.

Hi there. Check to see if the security system is active. The injectors will stop working if the security system is active. If so, then check there are some damaged wires to the passlock switch on the steering column. Remove the steering column shrouds around the ignition lock cylinder. Inspect the wiring harness coming out of the lock cylinder. Make sure the wires are not rubbed through or broken. If the wires are okay, the connect a digital ohm meter to the wiring harness at the lock cylinder. Check for a complete circuit on the lock cylinder. If there is no complete circuit, then you have a bad lock cylinder or a bad connection between the key and cylinder. If everything look good, then it is possible that the cluster to security system has failed and needs replaced.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. injectors only spray 3 times and quit.

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: How do I adjust the remote start heater and air conditioning for my 2007 Yukon?

Hi Michael. Thanks for contacting us tonight. Although the specific steps for completing this process is often unique for each year, make and model, there are some general steps that most GMC's use. To set the controls for when you...

Q: Buying an 04 Chevy Silverado

As you know, with any vehicle, the dependability is largely dependent upon how well it is maintained. You're right that you should get the car inspected by a mechanic just to be sure. You may want to consider having a...

Q: Q: Radiator leaking fluid

Hi. Fluid leaks are common, particularly from old rubber hoses. I suggest you have a certified mechanic, like one from YourMechanic, have all of the hoses replaced. It may seem like overkill, but all of the other hoses that are...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
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...