Oct 5, 2020 at 10:09 AM
(Merged)
No spark?
2007 CHEVROLET SILVERADO
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since your getting no spark and no fuel injector pulse it sounds like it is a crankshaft sensor or camshaft sensor problem. it will have to be relearened at a dealership.
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I'changed out the sensors ,crank sensor,cam sensor,ignition control module, coil 2 times in 4 months
Oct 5, 2020 at 10:10 AM
(Merged)
sounds like you will have to have the PCM tested
Oct 5, 2020 at 10:10 AM
(Merged)
I was just curious, did you do any testing before you replaced anything? Were there any codes?
Did you check for spark from the coil wire? The primary circuits to the coil, one is B+, the other ground pulse. Can you tell what is missing?
Did you check for spark from the coil wire? The primary circuits to the coil, one is B+, the other ground pulse. Can you tell what is missing?
Oct 5, 2020 at 10:10 AM
(Merged)
Replaced starter, cam shaft sensor, ECM, all fuses are good. Got 55 lbs at rail.
She sounds and acts like she wants to turn over but won't get the final push to actually start.
She sounds and acts like she wants to turn over but won't get the final push to actually start.
Oct 5, 2020 at 10:10 AM
(Merged)
Good afternoon,
What happens to the fuel pressure while cranking?
The spec is 55 to 62. you are at the low limit and these engines are very touchy with pressure. 5 lbs down and it will not run.
Does it have spark? does the tachometer move up a little on cranking?
https://www.2carpros.com/articles/how-to-test-an-ignition-system
Roy
What happens to the fuel pressure while cranking?
The spec is 55 to 62. you are at the low limit and these engines are very touchy with pressure. 5 lbs down and it will not run.
Does it have spark? does the tachometer move up a little on cranking?
https://www.2carpros.com/articles/how-to-test-an-ignition-system
Roy
Oct 5, 2020 at 10:10 AM
(Merged)
Jeff, what exactly do the RPMs tell you when it's kicking over? Do the RPMs tell you if the crank shaft sensor is working or not?
Jan 16, 2022 at 5:35 PM
Hi,
If you don't have an RPM signal, chances are there is a problem with the crankshaft position sensor.
Let us know.
Joe
If you don't have an RPM signal, chances are there is a problem with the crankshaft position sensor.
Let us know.
Joe
Jan 16, 2022 at 6:57 PM