Is this wire causing my issues?
Thread Starter
Pro
Joined: Mar 2016
Posts: 562
Likes: 66
Is this wire causing my issues?
Alternator wire in contact with coil. Erratic voltage from 13-16+ with random codes. This is mostly while cruising.
Mechman alternator
The wire in question is in direct contact so I’m assuming it needs to be rotated off of it?
Mechman alternator
The wire in question is in direct contact so I’m assuming it needs to be rotated off of it?
Race Director
Joined: Dec 2013
Posts: 12,502
Likes: 3,629
ECM controls alternator voltage output, so my guess would be the after market low resitance spark plug wires, and even non OEM plugs that do not have the needed RF suppression resistance, that is allowing RF noise from the coils back to the ECM, and what is causing the strange alternator output voltage fluctuation.
But re-route the alternator cable away from the coil, to see if that solves the problem.
But re-route the alternator cable away from the coil, to see if that solves the problem.
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Drifting
Joined: Aug 2022
Posts: 1,507
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From: Ruskin, FL
Thread Starter
Pro
Joined: Mar 2016
Posts: 562
Likes: 66
NEVERMIND smh
voltage is pegging gauge on cold start now. Opens the muffler valves and throws all sorts of codes.
going to change the battery and see if that helps since it did need to be jumped a few times…
also the alternator pulley is smaller than oem and will be changing that
voltage is pegging gauge on cold start now. Opens the muffler valves and throws all sorts of codes.
going to change the battery and see if that helps since it did need to be jumped a few times…
also the alternator pulley is smaller than oem and will be changing that
Instructor
Joined: Aug 2021
Posts: 140
Likes: 11
From: Chicago
Your starter solenoid is the issue. Replace the solenoid. Run a 1/0 wire from the alternator to the fuse box bolt. Run 1/0 wire from positive battery cable to fuse box. Run 1/0 wire from engine block to frame. Run 1/0 wire from negative battery cable to engine block.