Mazda Rotary Club

General => General Technical => I. C. E. & Electrical => Topic started by: rx-dave on September 24, 2008, 10:10:51 PM

Title: Mad jumping rev counter!
Post by: rx-dave on September 24, 2008, 10:10:51 PM
Just had an RX7 in with a mad rev counter! It\'ll vary wildly from 4kRPM on tickover then goes to over 10k RPM when revd gently........any ideas??
Thanks in advance,
Dave.
Title: dodgy rev
Post by: Eddie on September 25, 2008, 01:45:08 PM
hi Dave its common problem with rx7 rev counters, do a quick search loads have had a problem.
its to do with dry joints on the board.
I replaced mine, think i have 1 spare will have to check £35 posted if you want it.

regards
Title: Mad jumping rev counter!
Post by: shaunwil on September 25, 2008, 01:55:31 PM
Its usually the capacitors on the back of the gauge have grown and degraded. You can re-solder new ones in if your that way inclined.

Shaun
Title: Mad jumping rev counter!
Post by: rx-dave on September 25, 2008, 08:18:39 PM
Quote from: Eddie;540127hi Dave its common problem with rx7 rev counters, do a quick search loads have had a problem.
its to do with dry joints on the board.
I replaced mine, think i have 1 spare will have to check £35 posted if you want it.
 
regards

Many thanks for the help guys, Eddie i\'ll buy that from you if you still have it.
Dave. (07810 098199)
Title: Mad jumping rev counter!
Post by: karl_tate on September 25, 2008, 09:21:11 PM
mine was just a loose connection :D
Title: rev
Post by: Eddie on September 25, 2008, 10:14:08 PM
Will hunt it down for you need to get into my garage so can do that tomorrow mate.

will give you a call tomoz.

but as Karl said try wiggleing the connections on the back first you never know.

cheers
Title: rev counter
Post by: Eddie on October 11, 2008, 09:46:59 PM
So sorry forgot all about this, will pull it out Monday, let me know if you still want?
Cheers
Title: Mad jumping rev counter!
Post by: rx-dave on October 12, 2008, 11:36:56 AM
Hi Eddie, no worries matey and yes i\'ll still have it  :chat
Dave.