|
06-24-2009, 12:45 PM
|
#1 |
|
Registered User
Join Date: Sep 2007
Location: san diego,ca
Posts: 125
|
+18v !!!! help!
1969 truck. It was working fine, but last month or so, the voltage has been REALLY high. It doesn't stay consistent. It jumps around. At idle it usually bounces around 16v. But it sometimes levels out at 14v. Take off from stoplight or rev it, and it goes up and down, but pretty much goes right to 18v. I am pretty sure the voltage regulator has been bypassed and a newer style altenator installed. Any help?
|
|
|
|
06-24-2009, 01:09 PM
|
#2 |
|
urban fourwheelin
Join Date: Aug 2002
Location: Seattle
Posts: 1,007
|
Re: +18v !!!! help!
I would take the alternator off and take it to a GOOD parts store. They should be able to identify it and test.
__________________
1972 K5 Blazer with Cummins 4BT, NV4500 swap in the parts gathering stage. |
|
|
|
|
06-24-2009, 01:14 PM
|
#3 |
|
Registered User
 
Join Date: Apr 2004
Location: Sacramento
Posts: 3,737
|
Re: +18v !!!! help!
No need to take it off if you can get a volt meter. It might just be your gauge. You should not read much more than 14.5VDC when running. If a newer style alternator was used they are internally regulated.
__________________
'72 2wd blazer, bagged w/ watts link & EDC '72 C10 "Lowered Farm Truck" STOLEN 5-18-11 '66 impala ht |
|
|
|
|
06-24-2009, 01:18 PM
|
#4 |
|
Registered User
Join Date: Dec 2006
Location: Porter Ranch, CA
Posts: 978
|
Re: +18v !!!! help!
I had the same problem with my truck when I was running the regulator. I would make 100% sure that the external regulator has been bypassed. If it's internally regulated, as stated above, you probably just need a new alternator.
|
|
|
|
|
06-24-2009, 01:51 PM
|
#5 | |
|
urban fourwheelin
Join Date: Aug 2002
Location: Seattle
Posts: 1,007
|
Re: +18v !!!! help!
Quote:
Are you reading it at the gauge or the alternator or battery? reading your voltage through the gauge is inaccurate at best. Also I doubt you will see 14.6 at the battery. I would expect around 13.6-14.2 in the real world. If you want to learn to fix it Get a cheap $20 voltmeter, test alternator output at the battery. it should read steady between 13.8-14.6 volts. if It's jumping/spiking around you probably need a regulator. also if you have a Les schwab in your area they will do a quick electrical test for free...
__________________
1972 K5 Blazer with Cummins 4BT, NV4500 swap in the parts gathering stage. Last edited by RED72blazer; 06-24-2009 at 01:52 PM. |
|
|
|
|
 |
| Bookmarks |
|
|
Linear Mode
