Mercruiser 5.0 electric choke

bicklebok

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Mar 27, 2012
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Hello everyone, I have a 2002 Mercruiser 5.0 with a factory set up 2bl. I'm trying to get the electric choke working again. I checked the electric choke connection and it isn't getting any power with the switch on. Should it have 12 volts at the choke?

I'm not good at wiring diagrams but I looked at one and the purple/yellow wire looks like it runs to the oil pressure switch and one other connection. Anything I should check there?

Any tips are appreciated!
 

alldodge

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Should it have 12 volts at the choke?

Yes, with key ON there should be 12V

Look for a purple (12V) and Black (ground) wires
The purple connects to the choke coil and black connects to one of the screws hold the plastic coil in place. Can get 12V from the + side of the coil if the wire was cut out
 

bicklebok

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Yes, with key ON there should be 12V

Look for a purple (12V) and Black (ground) wires
The purple connects to the choke coil and black connects to one of the screws hold the plastic coil in place. Can get 12V from the + side of the coil if the wire was cut out

Thank you for the response. What does this mean: "side of the coil if the wire was cut out["

I have identified the positive and negative for the choke and they are connected as you describe, but don't know how to back track where the source of the problem is of no power. Thanks!
 

alldodge

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What does this mean: "side of the coil if the wire was cut out["

Ya left off the "+"
I meant if you can not find the wires, then you can run a jumper from the positive side of the coil to the choke. The coil has a "+" and a "-" side

Measure the voltage on the wire connection to the choke with the key ON, it should be 12V. If not there check the + side of the coil, it to should be 12V
 

bicklebok

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Thank you alldodge. I will check the + side of the coil. As I stated in my original post, there isn't any voltage reading at the + choke terminal.
 
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