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JOHN aka Eauto
JOHN aka Eauto, The Car Guy
Category: Chevy
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Experience:  ase tech
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My 2006 hummer h3 just died while driving it down the

Customer Question

My 2006 hummer h3 just died while driving it down the road... What could cause this to happen?
Submitted: 1 year ago.
Category: Chevy
Expert:  JOHN aka Eauto replied 1 year ago.

does it turn over?

Expert:  JOHN aka Eauto replied 1 year ago.

most likely is a fuel pump failure but basic testing should be done to confirm

We will have to pinpoint what the engine is missing.

Spark

Fuel

Compression

All three of these are tested when the engine is being cranked over. There are two way of checking for fuel. Fuel pressure and fuel trigger. Both are very important and must be present for the car to start. Fuel pressure is self explanatory. You just hook up the gage and see what the reading is. Fuel trigger is check with a noid light. The injector gets unplugged and the noid light gets plugged in to the injector clip. With the engine cranking over, this light must blink. This is the signal to the injectors from the computer. You can have all the fuel pressure in the world, but it wont matter if the injector is not pulsing gas into the cylinder like it should! Compression tester, spark tester, fuel pressure gage and noid light are all accessible at your local auto store. All three tests play a very important part in diagnosing a no start condition.

fuel pump is in the fuel tank

Expert:  JOHN aka Eauto replied 1 year ago.

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