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Im not getting twelve volts feeding to a coil. What do you…

Customer Question
Im not getting twelve...

Im not getting twelve volts feeding to a coil. What do you think I need to get this fixed?

Mechanic's Assistant: Have you checked all the fuses? Do you have a wiring diagram?

No wiring diagram

Mechanic's Assistant: What is the make/model/year of your car?

1999 Chevy truck 3500 5.7 liter

Mechanic's Assistant: Are you fixing your 3500 yourself? What have you tried so far?

Yes I installed new coil, cam shaft sensor, distributor cap, rotor, primary cable from coil to distrubutor.

Submitted: 4 months ago.Category: Chevy
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Answered in 2 minutes by:
12/7/2017
Chevy Mechanic: Ron, ASE Certified Technician replied 4 months ago
Ron
Ron, ASE Certified Technician
Category: Chevy
Satisfied Customers: 37,768
Experience: 35 years experience with ASE Certs
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Hello. My name is ***** ***** I am happy to assist you today. Give me just a moment to review your post, and I'll be right back with the help you need.

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Chevy Mechanic: Ron, ASE Certified Technician replied 4 months ago

The pink wire at the coil is the power feed, is this the wire you checking?

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Customer reply replied 4 months ago
no
Chevy Mechanic: Ron, ASE Certified Technician replied 4 months ago

Okay the crankshaft sensor as well as the ignition module and the coil share the pink wire for the power feed and the Pink wire gets its power from the ECM 1 fuse (20 AMP) located in the under hood fuse panel. Start with checking to be sure its in place and has power in and out of it.

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Customer reply replied 4 months ago
i did but still no power
Chevy Mechanic: Ron, ASE Certified Technician replied 4 months ago

Okay, do you have power on the same pink wire at the crankshaft position sensor as well as the ignition module?

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Customer reply replied 4 months ago
No 12 volts power from crankshaft sensor
Chevy Mechanic: Ron, ASE Certified Technician replied 4 months ago

Okay have a look at the enclosed diagram and locate the same pink wire where it comes out of the fuse panel and see if you have key on voltage on it coming out of the fuse panel.

https://www.dropbox.com/s/7bqev4l9dh4kc1e/ignition%20wiring%20Dec%207.pdf?dl=0

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Chevy Mechanic: Ron, ASE Certified Technician replied 4 months ago

Just checking in to see if your still needing help with this , if so please post back and we can work from there if need be. If not then please take a moment to rate my service so I can get credit for my time, the question remains open for follow up even after doing so, all you need to do is return to this question if need be.

Thank you again.

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Category: Chevy
Satisfied Customers: 37,768
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