evilution.co.uk/mod/alternator-testing.htm

1 excerpts.

Alternator Testing

evilution.co.uk/mod/alternator-testing.htm · p. 1 · Applies to: 451, 453

Mod Description Find out if the alternator is charging the battery Mod Details Premium Yes Difficulty Mod ID 732 Credit evilution Cost £7 For Link https://evilution.co.uk/mod/alternator-testing.htm Copy to Clipboard Testing Conditions Start the car and turn on all of the electrical doo-dads. Cabin blower, rear screen heater etc. This ensures that the alternator is requested to output as much power as it can. Some smarts regulate the voltage from the alternator so with no extra accessories running, a healthy alternator can output a much lower voltage if the car isn’t using very much. The test is ideally done from cold. 60 seconds from then, the car is no longer classed as being cold. So check quickly. Testing With the car running you should see in excess of 14 volts. On cars with stop/start like the 451 MHD and 453, they tend to use a much higher voltage to quickly top off the battery. On these models, it’s not unusual to see over 16 volts. But what happens if you see 12v or less when it’s running? This page tells you how to check the alternator and how to diagnose the problem causing the low voltage. Checking The Alternator Click if info helped 146 likes 100345 views Print