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rjames |
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I'm made of metal ![]() ![]() ![]() ![]() Group: Members Posts: 3,974 Joined: 24-July 05 From: Shoreline, WA Member No.: 4,467 Region Association: Pacific Northwest ![]() ![]() |
I installed a brand new battery and a new voltage regulater last week in the car. My volt meter is showing 12.5 volts at the terminals. With the car running and the lights and fan on my volt meter fluctuates between 12.7 and 12.9, then slowly starts to dip, getting as low as 12.5 before I decided to shut the engine off because I could see that the battery was slowly draining.
Would it be logical that the alternator might need replacing? The alt. belt also seemed tight (not sure exactly how tight it should feel though.) I can check the electrical connections (have to find them first though.) The connections at the battery all look good though. It doesn't look like a fun job to replace the alternator, but I'm up for the challenge. Anything else I should look for before I go this route?? Thanks! PS: Forgot to add that the alternator light on the dash comes on when starting the car, but goes off right away once it's started and doesn't come back on at all when driving. |
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ClayPerrine |
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Life's been good to me so far..... ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Group: Admin Posts: 15,541 Joined: 11-September 03 From: Hurst, TX. Member No.: 1,143 Region Association: NineFourteenerVille ![]() ![]() |
The only risk you have from "full fielding" (aka jumpering the D+ to the DF contacts for the regulator) is if you run it for a long time like that. It makes the alternator run wide open at 16 volts or so, and if it is run for a long time it can boil the acid out of the battery. A 5 minute test is NOT going to harm anything.
Do the test like this: 1. Put a DVOM on the battery posts. 2. Remove the voltage regulator from the relay board. 3. Start the 914. 4. Using a jumper wire, connect the D+ and DF contacts. 5. You should see 16 volts or so on the DVOM. If you do, your alternator is good. From recent threads, it sounds like I need to do a pictorial, step by step alternator troubleshooting thread. |
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