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John g
Novice
Jan 5, 2014, 11:19 AM
Post #1 of 14
(1431 views)
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no spark
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My2006 3500 Chevy truck with a 6.0 vortec died while driving and now wont start its not firing
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Discretesignals
Ultimate Carjunky
/ Moderator
Jan 5, 2014, 11:31 AM
Post #2 of 14
(1421 views)
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Re: no spark
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Any trouble codes stored in the engine computer? If so, write down the numbers.
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
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John g
Novice
Jan 5, 2014, 11:42 AM
Post #3 of 14
(1418 views)
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Re: no spark
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Just a knock sensor code I changd both cam and crank sensors still no spark
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Discretesignals
Ultimate Carjunky
/ Moderator
Jan 5, 2014, 11:44 AM
Post #4 of 14
(1417 views)
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Re: no spark
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Are you missing spark on both banks of the engine?
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
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John g
Novice
Jan 5, 2014, 11:48 AM
Post #5 of 14
(1414 views)
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Re: no spark
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Yes
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Discretesignals
Ultimate Carjunky
/ Moderator
Jan 5, 2014, 11:51 AM
Post #6 of 14
(1413 views)
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Re: no spark
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Do you have a NOID light that you can plug into an injector connector to see if you have injector pulse while cranking the engine? Just want to see if your missing spark along with injector pulse.
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
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John g
Novice
Jan 5, 2014, 11:55 AM
Post #7 of 14
(1411 views)
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Re: no spark
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No sir but lm getn one today from a buddy if I have injector spark whats my next step
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Discretesignals
Ultimate Carjunky
/ Moderator
Jan 5, 2014, 12:07 PM
Post #8 of 14
(1407 views)
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Re: no spark
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If you have injector pulse, then you would test for power, using a volt meter, going to the coils while back probed at the pink wires at the coil harnesses while cranking the engine.
If you don't have injector pulse and your able to communicate with the engine computer using your code reader, your going to need to find someone with a scope or get hold of a lab scope, at least two channels, to check the crank and cam sensor signals at the engine computer harness connector. You need a scope or graphing meter to see how the signals waveforms look. A volt meter's sampling rate is too slow to see the signals during cranking and you also can't see if they are synchronized or not.
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
(This post was edited by Discretesignals on Jan 5, 2014, 12:12 PM)
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John g
Novice
Jan 5, 2014, 12:13 PM
Post #9 of 14
(1400 views)
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Re: no spark
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Ok thanks for the help
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Discretesignals
Ultimate Carjunky
/ Moderator
Jan 5, 2014, 12:15 PM
Post #10 of 14
(1399 views)
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Re: no spark
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Let us know what you find out.
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
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John g
Novice
Jan 6, 2014, 4:16 PM
Post #11 of 14
(1372 views)
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Re: no spark
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Well I found the problem a bad connection to the crank sensor
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Discretesignals
Ultimate Carjunky
/ Moderator
Jan 6, 2014, 4:23 PM
Post #12 of 14
(1371 views)
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Re: no spark
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That would definitely do it. How did you find the bad connection? Was the wiring or connector damaged?
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
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John g
Novice
Jan 6, 2014, 5:03 PM
Post #13 of 14
(1365 views)
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Re: no spark
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Bad connector
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Discretesignals
Ultimate Carjunky
/ Moderator
Jan 6, 2014, 5:21 PM
Post #14 of 14
(1363 views)
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Re: no spark
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Glad to read that you got it solved. Thanks for the follow up 
Closed as solved. Can be reopened upon request by the OP.
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
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