Regular Contributor

Re: 420d backhoe id number tfdp08024

By now I hope the problem has been solved.  The buzzing relay usually indicates a voltage drop on the ground side or voltage side of the relay, mostly on the ground side.  The buzzing results from the relay rapidly turning on/off because a poor ground cannot maintain the current.

New member

420d backhoe id number tfdp08024


My back hoe wont start. ive mettered the battey fuse, block and ensured a good ground. ive even tappwd the starter as i know that can be a problem. the only indication is the start relay in the fuse box is buzzing and the idiot lights wont come on anymore. The backhoe hase not been started in about a year.



Any assistace is greatly apreciatted