|
|
|
Echo alternator voltage drops at higher RPM
|
|
|
| |
|
|
mcmasti
New User
Feb 15, 2012, 11:04 AM
Post #1 of 2
(1563 views)
|
|
Echo alternator voltage drops at higher RPM
|
Sign In
|
|
2001 Toyota Echo (I think there's only one engine size) manual transmission
With all accessories on, at idle RPM the alternator/battery voltage is good -- close to 15v. When RPM is raised, the voltage goes DOWN to around 12v. When I drive on the highway for a while, the battery light comes on. The car has quit three times under these conditions. If I up-shift to bring down RPM, the light goes off. The alternator and serpentine belt were replaced last summer 2011, the battery early January 2012. My mechanic has checked it three times. Any solutions?
|
|
| |
|
|
Hammer Time
Ultimate Carjunky
/ Moderator
Feb 15, 2012, 11:22 AM
Post #2 of 2
(1560 views)
|
|
Re: Echo alternator voltage drops at higher RPM
|
Sign In
|
|
Neither of those readings are good. 15v is too high and 12v is too low. test the battery first but it sounds like a bad alternator.
PS, make sure the belt isn't slipping.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
(This post was edited by Hammer Time on Feb 15, 2012, 11:23 AM)
|
|
| |
|
Auto Repair Home
SEARCH
WHO'S 
LOG