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Wayne, Journeyman
Category: Medium and Heavy Trucks
Satisfied Customers: 8274
Experience:  worked on, Gmc, Macks, Freight liner,Mercedes Benz,,Ford, sterling
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Disconnected battery to do some welding.Reconnected battery

Customer Question

Disconnected battery to do some welding.Reconnected battery and they were dead.
JA: What's the make/model/year of your truck? Engine type?
Customer: 2000ch e7 460 mack charged batteries, started truck and electronic malfunction light came on. truck was dead next day
JA: Sometimes things that you think will be really complicated end up being easy to fix. The Heavy Truck Mechanic I'm going to connect you with knows all the tricks and shortcuts.
Customer: that's correct
JA: Are you fixing your truck yourself? What have you tried so far?
Customer: would like to don't know what to try thinking it might be a chip
JA: Anything else you want the truck mechanic to know before I connect you?
Customer: no
Submitted: 1 month ago.
Category: Medium and Heavy Trucks
Expert:  Wayne replied 1 month ago.

Hi I'm Wayne

I will help you with this

what you are describing is the diode in the alternator

shorted to ground, remove the battery cable from alternator

see if it is dead tomorrow

I hope this helped you

Hi. If this helped you,

please remember to rate my answer 3 or more stars.

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