C6 2005 electrical issues
Thread Starter
Racer
Joined: Oct 2014
Posts: 292
Likes: 12
From: miami fl
Every Friday night cruise in Davie off of 84, by the Lowes and old Ruby Tuesday, just look for the Corvettes starts at 6;00PM to 9:00PM.
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Team Owner
Joined: May 2000
Posts: 53,732
Likes: 5,613
From: Plantation Florida USAF(Retired) 1966-1990
U.S. Air Force
St. Jude Donor '05 thru '26
NCM Sinkhole Donor
Intermediate
Joined: May 2021
Posts: 28
Likes: 2
From: Ormond Beach FL
I'm new to group. I have 2006 Z51 convertible and have tried 2 remanufactured alternators and both failed to charge the battery. Both were 145 amps. I have checked all terminals including starter (yes they were loose) and as many grounds as I can find. So, can someone direct me to wiring diagrams for grounding. OR can someone recommend a reliable replacement alternator. The original still works but voltage is all over the place.
Thread Starter
Racer
Joined: Oct 2014
Posts: 292
Likes: 12
From: miami fl
I'm new to group. I have 2006 Z51 convertible and have tried 2 remanufactured alternators and both failed to charge the battery. Both were 145 amps. I have checked all terminals including starter (yes they were loose) and as many grounds as I can find. So, can someone direct me to wiring diagrams for grounding. OR can someone recommend a reliable replacement alternator. The original still works but voltage is all over the place.
Intermediate
Joined: May 2021
Posts: 28
Likes: 2
From: Ormond Beach FL
Thanks I'll check the relays and fuses. I did do a voltage drop test from alt to battery positive and negative and readings were 0.01 to 0.02 volts. But as recommended the cables are old so I will work on replacements .
Thread Starter
Racer
Joined: Oct 2014
Posts: 292
Likes: 12
From: miami fl
go for it get new cables and try that ...but keep checking grounds and short circuit maybe can occur
5th Gear
Joined: Jun 2021
Posts: 5
Likes: 0
From: Indiana
Once again this piece of crap die ...battery has 12.66 volts ... Brand New bcm programmed ...abs light ...service anti lock brakes ...all gauges go down to zero minus the battery one no lock or unlock through the key fob no windows working...low fuel message even with half tank etc ...I'm tired of this crap give me an offer
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Intermediate
Joined: May 2021
Posts: 28
Likes: 2
From: Ormond Beach FL
Thanks VetteLover and your drinking buddy. I had the battery/alternator/starter checked and all checked good. One evening while trying to find the alternator wire route I was pulling on the wire. Next time I tried to start and run I had only 11 volts on the cluster. So I disconnected the old wire and installed a new #4 from alt to starter. That's a procedure I will not repeat. Next time I'll get a multi-post battery clamp and go straight to the battery. The the one thing I learned was the ECM monitors the alt. output and de-clutches the drive pulley. Some ones idea to save gas or add a fraction of HP. I got that tid bit from a gent who repairs alternators and starters for the last 65 years and I do recall reading in the owners manual that is a feature. The three pin plug and receptacle on top of the alternator is where the ECM and alt communicate. One pin is the alt output to the ECM, the second is the alt output to the ECM for the gage cluster reading and the third is the ECM output to de-clutch the pulley. I hope this helps someone else down the road. So cheers to you and your friend for the help.
Thread Starter
Racer
Joined: Oct 2014
Posts: 292
Likes: 12
From: miami fl
Thanks VetteLover and your drinking buddy. I had the battery/alternator/starter checked and all checked good. One evening while trying to find the alternator wire route I was pulling on the wire. Next time I tried to start and run I had only 11 volts on the cluster. So I disconnected the old wire and installed a new #4 from alt to starter. That's a procedure I will not repeat. Next time I'll get a multi-post battery clamp and go straight to the battery. The the one thing I learned was the ECM monitors the alt. output and de-clutches the drive pulley. Some ones idea to save gas or add a fraction of HP. I got that tid bit from a gent who repairs alternators and starters for the last 65 years and I do recall reading in the owners manual that is a feature. The three pin plug and receptacle on top of the alternator is where the ECM and alt communicate. One pin is the alt output to the ECM, the second is the alt output to the ECM for the gage cluster reading and the third is the ECM output to de-clutch the pulley. I hope this helps someone else down the road. So cheers to you and your friend for the help.
Thread Starter
Racer
Joined: Oct 2014
Posts: 292
Likes: 12
From: miami fl
Thread Starter
Racer
Joined: Oct 2014
Posts: 292
Likes: 12
From: miami fl