Help! Here is the story. I don't have a real grasp of the correct terminology so bear with me. Advance Auto diagnosed a bad altenator on my car while idleing, testing the amperage(?) from the battery. So i bought a new one (worldwide/Bosch brand) and had a local mechanic install it (no MB specialist in this small town). After installation the mechanic tested the altenator and saw it was not recharging the battery. So i took my old core to Advance for them to bech test it - it tested fine, but they could not do a complete test on for reasons that i did not quite grasp. Anyway, the mechanic told me the altenator is receiving power(volts) but is not recarging the battery. Where do i go from here - assuming the new altenator is 99% good.I hope this make sense to someone. Many thanks in advance - this is very frustrating and i feel like i am just throwing money out the window.

Try disconnecting the Glow system relay while testing, many times these relays stick & use all of the power the alternator puts out. Many mechanics miss this during their testing.

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MERCEDES BENZ MASTER GUILD TECHNICIAN
ASE MASTER TECHNICIAN
27 YEARS DEALER M.B. TECH
190E 2.3 ITS RACECAR

This is a good idea. If the glow relay is stuck, we can ship one to you ASAP. You can tell the tech they have been known to pull 80-100 amps.

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Benzmac:
1981 280GE SWB
1987 16V
ASE CERTIFIED MASTER AUTO TECHNICIAN
SERVICE MANAGER FOR 14 BAY FACILITY
MERCEDES SPECIALIST 8 YRS
PARTNER IN MERCEDESSHOP.COM

Will the Dash Light that shows the glow plugs are heating stay on if this relay sticks. Is there anyway to test the relay?

Thanks,

Dave

Will the Dash Light that shows the glow plugs are heating stay on if this relay sticks. Is there anyway to test the relay?

Thanks,

Dave

the light shows if it is stuck.

mine did about 15 years ago on my 83 300dt. it buzzed and got a little hot.

tom w

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.