RWD - Alternator going, going, gone?

Volvo RWD 200 Forum

INDEX FOR 6/2018(CURRENT) INDEX FOR 2/2004 200 INDEX [<<]  [>>]


Alternator going, going, gone? 200 1993

Happy new year all!

I just picked up a used '93 240. Nice car, but not without a few problems . . . .

One of those is the charging system. Symptoms: Battery goes flat/not charging, and not all the warning lights come on with key "on" and engine not running. When engine is running, some of the lights--including battery/charging light--flicker faintly.

I've done a number of checks:

With key on/engine off, I checked for continuity between alternator terminal 61 on the alternator and ground; reading is ~20 ohms. (should be ~ 0 between 61 and ground, correct?)

With key on/engine off, I grounded the wire from the charge/battery warning lamp to alt#61--all warning lamps, including the battery/charging system warning light--came on bright and steady.

Checked for good ground between blue wire at back of alternator to battery negative terminal, good continuity, no resistance (>0.1 ohm).

Pole-to-pole battery voltage with engine off = 12.4 volts

Pole-to-pole battery voltage with engine running = 11.8 volts

So . . . is the alternator dead (diode/s?), or is this a problem that could be solved with new brush pack/regulator?

Any insights/BTDTs/additional checks/considerations would be GREATLY appreciated!

Thanks in advance!

Steve A-


[about brickboard ads]


New 1 Alternator going, going, gone? [200][1993]
posted by  anderssj  on Thu Jan 5 09:14 CST 2017 >

[about brickboard ads]

Cut and paste link:

<< < > >>

Users marked in green are currently online.

©Jarrod Stenberg 1997-2016. All material except where indicated.

Brickboard.com is not affiliated with nor sponsored by AB Volvo, Volvo Car Corporation, Volvo Cars of North America, Inc. Brickboard.com is a Volvo owner/enthusiast site, similar to a club, and does not intend to pose as an official Volvo site. The official Volvo site can be found here.

All participants agree to these terms.
Powered by Denizen - Custom Software for Enthusiasts