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Title: rev gauge dancing?!
Post by: 1988typer on April 10, 2013, 09:16:41 PM

I\'ve owned 2 rx7s now and had the same problem with both. Basically the rev counter is all over the place and never has a correct reading. I\'ve heard that this is caused from a bad earth.

Can anyone help with this?

thanks

Title: rev gauge dancing?!
Post by: probedb on April 11, 2013, 09:01:59 AM

I know on FDs this can be caused by broken/blown capacitors which you can replace. Old electronics :)

Title: rev gauge dancing?!
Post by: 1988typer on April 13, 2013, 11:33:58 PM

is there a diagram or thread i can follow to find the capacitors/ thanks

Title: rev gauge dancing?!
Post by: probedb on April 14, 2013, 04:42:53 PM

Have a hunt around rx7club.com or fduk.com there\'s a few threads about them but I don\'t have them bookmarked.

Title: rev gauge dancing?!
Post by: rx7boy on April 15, 2013, 01:08:39 AM

I know this sounds mad but Scott had the same problem on his car and he reckons he has solved it by putting an earth strap between the two rotor housings. If you still have the rats next this won\'t apply but it\'s working for him.

Title: rev gauge dancing?!
Post by: Skifledanabit on April 15, 2013, 01:12:41 AM

Had a look at the workshop manual. Its for an FC but it should be the same outcome. Troubleshooting for fluctuating speedometer - defective speedometer cable or defective speedometer.

Title: hmmmm
Post by: 1988typer on April 15, 2013, 10:05:13 PM

Quote from: Skifledanabit;855745Had a look at the workshop manual. Its for an FC but it should be the same outcome. Troubleshooting for fluctuating speedometer - defective speedometer cable or defective speedometer.

:wiggle Sooooo could be faulty cable or the actual rev clock.. I\'ll check the cable first :cheers

Mazda Rotary Club

General => General Technical => I. C. E. & Electrical => Topic started by: 1988typer on April 10, 2013, 09:16:41 PM