Need Your Input! 00 C5 Possible Voltage Drop!
Thread Starter
Burning Brakes
Joined: Aug 2002
Posts: 949
Likes: 1
From: Cary Il
Need Your Input! 00 C5 Possible Voltage Drop!
Complicated problem! New 145A alternator, Since car was new: Clock looses time ( 2 - 4 hours at a time once in awhile), Headlights dim occasionally (dashboard reads 12.5-12.9 volts), normally dashboard reads 13.5 - 13.9 volts. Since the ATI install, dashboard shows 1 volt less than the reading at the battery, ie. 12.2 - 12.9, vs 13.2 -13.9. NOT THE PULLEYS per FLP. Burning out electric fuel pumps on a regular basis (they can not tollerate anything below 12.25v for more than 5 min. per mfg.). FLP to check out the various ground staps.
WEIGH IN IF YOU HAVE EXPERIENCED A SIMILAR SITUATION!!!!!!!!
JR
WEIGH IN IF YOU HAVE EXPERIENCED A SIMILAR SITUATION!!!!!!!!
JR
Safety Car
Joined: Sep 2001
Posts: 4,411
Likes: 1
From: Wilmington NC
Originally Posted by JR-CRUZN-C5
Complicated problem! New 145A alternator, Since car was new: Clock looses time ( 2 - 4 hours at a time once in awhile), Headlights dim occasionally (dashboard reads 12.5-12.9 volts), normally dashboard reads 13.5 - 13.9 volts. Since the ATI install, dashboard shows 1 volt less than the reading at the battery, ie. 12.2 - 12.9, vs 13.2 -13.9. NOT THE PULLEYS per FLP. Burning out electric fuel pumps on a regular basis (they can not tollerate anything below 12.25v for more than 5 min. per mfg.). FLP to check out the various ground staps.
WEIGH IN IF YOU HAVE EXPERIENCED A SIMILAR SITUATION!!!!!!!!
JR
WEIGH IN IF YOU HAVE EXPERIENCED A SIMILAR SITUATION!!!!!!!!
JR
A corroded ground is always a good possibility with voltage drop. Also check the connections going away from the battery. In case FLP doesn't have the ground diagram you can downlad my copy at:
http://member.newsguy.com/~rmoburg/j...20for%20C5.jpg
Safety Car
Joined: Aug 2000
Posts: 4,537
Likes: 84
From: St. Joseph MO
Cruise-In III Veteran
Cruise-In IV Veteran
1.) Check to make sure the alt pulley isn't slipping in the belt track.
2.) Make sure the alt isn't grounding out internally through one of the stator windings. (Alt test to verify)
3.) The problem started after the ATI install. Or after some time with the ATI install?
2.) Make sure the alt isn't grounding out internally through one of the stator windings. (Alt test to verify)
3.) The problem started after the ATI install. Or after some time with the ATI install?
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Thread Starter
Burning Brakes
Joined: Aug 2002
Posts: 949
Likes: 1
From: Cary Il
Originally Posted by Richin Chicago
A corroded ground is always a good possibility with voltage drop. Also check the connections going away from the battery. In case FLP doesn't have the ground diagram you can downlad my copy at:
http://member.newsguy.com/~rmoburg/j...20for%20C5.jpg
http://member.newsguy.com/~rmoburg/j...20for%20C5.jpg
Thanks for the ground schematic I am faxing over to FLP ASAP just
in case they do not have one!!!
JR
Thread Starter
Burning Brakes
Joined: Aug 2002
Posts: 949
Likes: 1
From: Cary Il
Guys -
I stopped by FLP today to see how the "Voltage Mystery" was going
and Chuck queried some Dealer Vette Techs and found that numerous vette owners have complained about the headlight dimming situation and so far nobody has come up with a valid, proveable reason for the dimming situation, so I guess I am not alone with this problem. The dimming situation may not be related to the voltage drop at the fuel pump so the search effort goes on!!
JR
I stopped by FLP today to see how the "Voltage Mystery" was going
and Chuck queried some Dealer Vette Techs and found that numerous vette owners have complained about the headlight dimming situation and so far nobody has come up with a valid, proveable reason for the dimming situation, so I guess I am not alone with this problem. The dimming situation may not be related to the voltage drop at the fuel pump so the search effort goes on!!
JR
5th Gear
Joined: Mar 2004
Posts: 5
Likes: 0
From: Eagle Rock VA
Same problem here
Hey
Mine does it too..... Sometimes when I hit the brakes other times when I am just cruising along... It gets a little annoying... But I have to let her go to the dealership for a new fuel sending unit covered under warranty... But I was told told I have to find a dealership that does does body work to replace it...Sounds weird I will have to take a look underneath and see why....
Brian
Mine does it too..... Sometimes when I hit the brakes other times when I am just cruising along... It gets a little annoying... But I have to let her go to the dealership for a new fuel sending unit covered under warranty... But I was told told I have to find a dealership that does does body work to replace it...Sounds weird I will have to take a look underneath and see why....
Brian
