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1996 5.7L vortec I have changed crankshaft sensor, throttle…

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1996 5.7L vortec I...
1996 5.7L vortec I have changed crankshaft sensor, throttle position sensor, distributor ignition pickup, ignition coil, and the ignition control module and still not getting a spark
Submitted: 2 years ago.Category: Chevy
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Answered in 3 hours by:
2/23/2016
Chevy Mechanic: Gary, Chevy Technician replied 2 years ago
Gary
Gary, Chevy Technician
Category: Chevy
Satisfied Customers: 18,028
Experience: 15 years GM master tech
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no spark out of the coil when cranking it over testing with the coil wire OUT of the coil ?

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Customer reply replied 2 years ago
Yea I have..think I have got it down to a bad ecu
Chevy Mechanic: Gary, Chevy Technician replied 2 years ago

with the key ON is the check engine light lit up in the dash ?

so you HAVE spark out of the coil cranking it over ?

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Customer reply replied 2 years ago
No one both counts..I bought a tester and it wasn't getting anything out of the coil. I checked the gauges every time I replaced something
Chevy Mechanic: Gary, Chevy Technician replied 2 years ago

ok but with the key ON is the check engine light lit up in the dash ?

you sure ?

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Customer reply replied 2 years ago
Yea I was just out there looking at it
Chevy Mechanic: Gary, Chevy Technician replied 2 years ago

ok can you see if the fuse called ECM1 and ECMB and ENG1 in the under hood fuse box all show 12 volts at them testing them in place through the little openings in the tops of those fuses with the key ON ?

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Customer reply replied 2 years ago
Will I get back with you tomorrow? Trying to get the little one to bed
Chevy Mechanic: Gary, Chevy Technician replied 2 years ago

if that check engine light is NOT on either the computer is missing power or a ground or is bad

if those 3 fuses are NOT blown and if any of them show no volts or well under 12 volts then usually the ignition switch is bad not fully powering one or all those fuses and replacing the ignition switch will correct the power to them

if you have any questions please ask as i do NOT get credit for my work until you rate us here at Justanswer

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Customer reply replied 2 years ago
I will thank you
Chevy Mechanic: Gary, Chevy Technician replied 2 years ago

let me know how it goes

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Chevy Mechanic: Gary, Chevy Technician replied 2 years ago

how are you making out ?

if you have any questions please ask as i do not get credit for my work until you rate us here at Justanswer

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