jiggaman

i have a 1990 audi 200 non quatro turbo ..and i am having some problems with the voltage droppin low with all accesories on and sometimes vehicle dies when accesories are on and depressing brake and turning at the same time ...i have changed the battery and tested the alt. if it dies it will most likely start right up after a fewmins of down time..i also just installed new plugs cap rotor fuel filter and power steering pump in it ....if any information on where to start or what to test or look for would be greatly appreciated....thanks jake

Senna4Life

maybe a loose alt belt?

ecgarzone

SOUNDS LIKE A DIODE OR TWO HAS GONE BAD IN YOUR ALTERNATOR. THE UNIT WILL MINIMALLY CHARGE, BUT WON'T COVER THE CURRENT DRAW WHEN ALL ACCESSORIES ARE GOING. WHEN THAT HAPPENS, THE BATTERY DRAWS DOWN. A COMMON PROBLEM WITH EARLIER GENERATION AUDI.

auditech1218

those voltage regulators wear down over time and begin to loose contact which wont allow the alt to keep up with hewavy load

jiggaman

i appreciate the responses and would like any more help ...i am a mechanic by trade and this is my sisters car and have been battling it to keep it running good for months now..the voltage regulator is replacable? i always thought they were built in to the alternator...and if it is replacable where is it located on this car ..not to familiar with foreign...

RussB

The voltage regulator and brushes comprise one replaceable subassembly that's held to the rear surface of the alternator by two (6 mm hex head?) screws.

Buy Bosch replacement VR from any Worldpac reseller.

Time to obtain a shop manual. Ask sis to buy one for you.

One (of many) Worldpac reseller:<ul><li><a href="http://www.sjmautotechnik.com">http://www.sjmautotechnik.com</a</li></ul>

SteveAngry

Bad alternator, voltage regulator, corroded field wire, etc...