My alternator light comes on when I accelerate

Asked by Aug 11, 2011 at 10:33 PM about the 1989 Volkswagen Vanagon

Question type: Maintenance & Repair

I have checked my battery and my alternator. Both are getting about 14.5 volts. I believe they are OK. The alternator light on the instrument panel comes on when I accelerate. Any ideas?

4 Answers


It's a good possibility that the belt is slipping during acceleration, when you check the voltages the engine is probably at idle and there is very little strain on the drive belt. Check the belt condition (glazing, cracks, etc.) also check the pulleys for excessive wear and of course the belt has to be properly tensioned. Good luck with it!!


Check all your ground wires in engine compartment.Wires tend to rust even they look Ok from outside.

I found out the issue was just a loose wire. Thanks for all the suggestions.


It was something to do with wires...I am glad you found loose connection

Your Answer

Add photo

Related Questions

  • 1985 vanagon1.9liter sluggish gas mileage is terrible 2 answers

    Won't accelerate no power gas mileage cut in half did tune up. Plugs distributor cap air filter fuel filter blows black smoke

    1985 Volkswagen Vanagon Camper Passenger Van


    Maintenance & Repair

  • Hi, I have a 1990 Vanagon. I had a rebuilt motor built for it by a VW shop. It will only go 70mph? 2 answers

    Hi, I have a 1990 Vanagon. I had a rebuilt motor built for it by a VW shop. It will only go 70mph max, like it has a governor, with no ability to rapidly accelerate nor pass. I took it to another shop...

    1990 Volkswagen Vanagon


    Maintenance & Repair

  • Engine Cleaning 1 answer

    My engine was so dusty and dirty. I tried to have a engine cleaning and under. After a the job completed, they let start the engine and good to go. I noticed after starting the engine, it hesitate to...

    1990 Volkswagen Vanagon GL Passenger Van


    Maintenance & Repair

  • what is the cause of gasoline in the oil? 4 answers

    I'm thinking of buying a pretty nice 87 Vanagon for a pretty decent price. The owner said it started smoking badly on a very cold winter day. I checked the oil for signs of a blown head gasket. Didn'...

    1987 Volkswagen Vanagon


    Maintenance & Repair

  • Engine backfires 10 answers

    engine starts, idles and reeves okay for a minute but then after that, the throttle does not response when accelerating and it backfire and shuts engine off. Any suggestion what causing it?

    1990 Volkswagen Vanagon Base Passenger Van




Looking for a Used Vanagon in your area?

CarGurus has 29 nationwide Vanagon listings and the tools to find you a great deal.


Search Volkswagen Vanagon Questions

Volkswagen Vanagon Experts

#1 Scott Sr.
Scott Sr.
Reputation 840
#2 Ryan Redenbaugh
Ryan Redenbaugh
Reputation 250
#3 chassy
Reputation 200
View All

Related Models For Sale

Used Jeep Wrangler
289 Great Deals out of 18,693 listings starting at $2,995
Used Toyota Land Cruiser
12 Great Deals out of 1,126 listings starting at $5,400
Used Ford Mustang
396 Great Deals out of 47,365 listings starting at $1,999
Used Toyota 4Runner
284 Great Deals out of 20,880 listings starting at $1,995
Used Ford F-150
2,261 Great Deals out of 209,447 listings starting at $1,499
Used Volkswagen Jetta
412 Great Deals out of 38,071 listings starting at $1,250