Converting Machines Inc.

> Alternator voltage stays the same even with a load on?

Top concern

Will 275/40/19 tires fit on my rims which hold 275/40/18 tires or does it have to match the 18?
What`s the life of a car battery?
I put 2 litres too much oil in my van will it be ok?
Why is my cars antifreeze disappearing?
New help changin transmission on 87 Volvo 740 turbo?
I put a 25amp in a motorcycle fuse box where a 10 is suppose to be and when i tried my turning signals it burnt out my r
When to change timing chain and belt?
Put my car in 2nd instead of 4th and now a rattling noise from left had side of engine?
Car heater blows cool air?
Black smoke, no engine light, faster acceleration help?
Should I be worried about my car?
Each time I've gotten oil changes, I've use conventional oil. Would it be OK to use synthetic oil for the next o
My car air conditioning is only running on high...?
The light one my dashboard turned on and i dont know what it mean i do not have an owners manual?
Did I crack a piston or do I need a new head gasket?

Alternator voltage stays the same even with a load on?

Posted at： 2015-01-07　

Alternator should always show about 14.5 volts, when read across the battery posts with the engine running.

if it goes above 14.6 volts then you could have a bad voltage regulator. 13.5 at idle increasing to 14.4 with rpm is normal.

That's what it's supposed to do.

What if it goes up?

Previous： Car has spark, it has fuel, but wont start?

Next：Who is responsible for all cost and repairs?