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ACR problem

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Old May 8, 2018 | 07:34 PM
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Default ACR problem
I have a new set of acr installed in my 2008 FLHTC MOTOR CRANKS NO START unless I pull the ground wires Cranks but won’t start when hood up to ground positive wire hot to green wire at relay ?
 
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Old May 8, 2018 | 08:31 PM
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1) welcome to the Forum and congrats on your first post

2) say what?
 
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Old May 8, 2018 | 08:43 PM
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Did you replace the ACR's or did you add the ACR to the bike with the harley kit?
 
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Old May 8, 2018 | 08:58 PM
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Originally Posted by toddskill
Did you replace the ACR's or did you add the ACR to the bike with the harley kit?
new heads from Harley HD ACR wired to starter relay green wire and Chassis ground
 
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Old May 8, 2018 | 09:29 PM
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I think ya need to hook the hot to the big main starter cable. Ground to ground.
 
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Old May 8, 2018 | 10:53 PM
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And unooking the grounds on the acr allows the bike to fire up? Are you positive you are on the starter relay? Sounds like something is grounded out through the acr.
 
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Old May 9, 2018 | 06:06 AM
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Originally Posted by toddskill
And unooking the grounds on the acr allows the bike to fire up? Are you positive you are on the starter relay? Sounds like something is grounded out through the acr.
yes with ground on motor spins no start acr working.ground on hard cranking but starting
 
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Old May 9, 2018 | 08:21 AM
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Damn.....I had that same problem! Slid a stick of dynamite into the fuel tank with the fuse sticking out the top, put a match to it and RAN.

Problem eliminated......
 
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Old May 9, 2018 | 08:43 AM
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ECM has to see crank slow down, combined with crank tooth count, to know which cylinder to send spark to. Going directly to the starter relay may bleed off too much pressure for the ECM to recognize which cylinder it's on, so no spark. Solution is to install the correct ACR wiring harness, and have them turned on in the ECM.
 
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Old May 9, 2018 | 08:46 AM
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Originally Posted by roussfam
1) welcome to the Forum and congrats on your first post

2) say what?
There is a direct correlation between a poster's ability to articulately describe their problem(s) in detail and someone actually being able to help them.
 
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