Why does my Chevy Express refuse to start?

Because it tries to start as the key is turned back. But if that is the case then the switch would be causing a loss of power to something, which would then cause a loss of spark or injector pulse, etc.. Problems with any temp sensors should not keep it from starting.

How to test no spark no start test?

No spark from all of the Coil-On-Plug Ignition Coils. No fuel injector pulses from the fuel injector connectors as tested using a Noid Light. P0335: No Crank Sensor Signal Detected. P0336: Inconsistent Crank Sensor Signal Detected.

How to start a car with no spark?

Activate the 8 COP coils to spark. Activate all 8 fuel injectors to start spraying fuel into the cylinders. Maintain the fuel pump activated after its initial start. With fuel and spark now present, the engine now starts.

What should I do about my Chevy Express?

Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them. Chevy: start condition..crank..couple times..i spray fuel in intake… chevy express has a no…

Can a failed crank sensor cause no start?

The thing to remember about having a failed crank sensor, is that if you have spark or fuel injector pulses, the crank sensor is OK and not the cause of your No Start Condition. The crankshaft position sensor, on your 4.8L, 5.3L, 6.0L GM vehicle, is a Hall-Effect three wire crankshaft position sensor.

Why does my GM car say no start no crank?

How to diagnose a no start no click on GM vehicle. If you have a late model GM vehicle and turn the key only to hear nothing, you’ll most likely think you have a dead battery—and you may. But a no start, no crank, no click condition can be far more involved than that.

What causes the fuel pump to not start?

The fuel pump is running and delivering normal pressure to the engine But, with all that working your engine still will not start. So, the most likely cause, is that the fuel injectors are probably not opening. The (PCM) uses the trigger signal from the crankshaft position sensor; and/or camshaft position sensor to pulse the injectors.

What causes a GM pick up to not start?

The one symptom that’s gonna’ be staring you right in the face is your GM pick up or van or SUV cranking but not starting. More specifically, you’ll see one or all of the following symptoms when the crank sensor fails: No spark from all of the Coil-On-Plug Ignition Coils.

What causes an engine to shut off while driving?

Had a similar situation (just shut off while driving) on mine that turned out to be a broken wire to the crankshaft position sensor (CKP). Diagnosis started by pulling codes and finding a CKP code, so I would almost certainly start by pulling codes.

Why is my Chevy 6.0 engine not starting?

Hard Starting Situations. Chevy 6.0 engines usually have issues in starting up during the cold months, particularly when the temperature is close to freezing point. It is commonly presumed that the oil might have frozen, making it impossible for the car to get fuel. That is as wrong as it can get.

Why does my GM Truck shut down while driving?

At a dead stop. It would crank over, but not start. Ran the battery dead trying to crank it. My dad came to help, charged the battery, and it started right up. It sounds wierd but this is what its doing.

What causes Chevy Silverado to shut down while driving?

Parts stores can scan it for you if you don’t have access to a scanner. But we don’t recommend driving anywhere until your Silverado is fixed, since dying at the wrong time can cause a collision. 1. Out of Fuel

What to do if your Chevy 6.0 engine is not working?

The symptoms occur with no engine-related noises during a low oil pressure condition. Some technicians say to replace the oil pressure sensor. If this does not solve the issue we may have to dig deeper. The next step would be to try completely draining and replacing the oil as well as replacing the oil filter.

Why does my GMC truck not shut off?

OK, new ignition sw & harness installed, alarm system disabled. It puts all kind of codes in it. It’s been at the shop for almost 6 days and the tech’s have been working on it. It is a RAMDOM problem, don’t do it all of the time. Any more ideas? Any help will be appreciated. Thanks.

Why does my GMC Sierra suddenly stop running?

Truck suddenly stops running, acting like it’s out of fuel. There is fuel in the gas tank and, I can hear the fuel pump when I turn the ignition on. Is there a fuse, or relay that is maybe causing this to happen?

Why does my Chevy Express van not start?

Lately I have had this problem: Go to start the van and if fires up for about one second then quits. Try and try it will not start. Dealer at first said it was the fuel pump. Replaced it. Months later still doing the same thing. It like the security system is telling the car not to start.

What causes a car engine to stop running?

Intermittent faults in ignition modules can also cause an engine to suddenly stop running, and are often heat-related. When the module overheats, it quits working — but starts working again after it cools down (say 15 to 30 minutes later).