REV counter going right round

Bill · Post by **Bill** » Fri Mar 25, 2016 2:06 pm

Hi all,
Can anyone help me with the problem of the re counter going right round to 7000 when i turn the key,
car runs ok just need to trace the problem, thanks Bill

unknownmale · Post by **unknownmale** » Fri Mar 25, 2016 2:10 pm

I'd start of checking the connections at the back of the clocks. I think the rev counter works through resistance, the less the resistance the higher the RPM on the clock, so could be a blown resistor. Best off taking the clocks out and having a play around

unknownmale · Post by **unknownmale** » Fri Mar 25, 2016 2:10 pm

I'm not 100% sure about that by the way, just what I would start with

Nate · Post by **Nate** » Fri Mar 25, 2016 4:36 pm

Does it flap about or just hole steady? When the earth strap on mine broke between the rocker cover and coil, Rev counter went nuts

Bill · Post by **Bill** » Fri Mar 25, 2016 4:44 pm

just flies round as soon as you turn the key and the dash lights come on, checked continuity between the plug on the back of the dials and the coil thats ok, will try and get the dials out if we get a dry day the weekend,

mark1gls · Post by **mark1gls** » Fri Mar 25, 2016 7:12 pm

Check the earth wire going to the back of the engine rocker cover, if that fails causes all sorts of problems with the dash.

james butler · Post by **james butler** » Fri Mar 25, 2016 8:39 pm

check the earth for the ignition circuit to as i believe the rpm counter works of the negative side of the coil as it pulses?
you may find theres a bad earth in the ignition and its trying to earth through the rpm counter instead (in theory).

Bill · Post by **Bill** » Fri Mar 25, 2016 10:01 pm

Cheers lots to try out.

Bill · Post by **Bill** » Mon Mar 28, 2016 9:34 am

Had a good look under the dash everything looks and checks out ok,
Is there anyone near Brum how has a set of dials i can plug into to try, cheers again Bill

mark1gls · Post by **mark1gls** » Tue Mar 29, 2016 9:37 pm

Do you have an MFA on the car and have you checked the earth in the engine bay going to the rocker cover?

Bill · Post by **Bill** » Thu Mar 31, 2016 5:50 pm

Checked all the earths around the engine bay, no MFA, still trying lots of things at the moment. cheers

james butler · Post by **james butler** » Fri Apr 01, 2016 6:25 pm

im in brum and have a spare you can try.
pm me for more details

Bill · Post by **Bill** » Tue Apr 12, 2016 8:02 pm

Big thanks James for the work tonight. Beer at the National fella, Cheers

mark1gls · Post by **mark1gls** » Tue Apr 12, 2016 10:04 pm

Well..... What was the outcome?

Bill · Post by **Bill** » Wed Apr 13, 2016 8:51 pm

Gauge is kaput, but the cost of second hand is unbelievable, anyone got a spare set of gauges at a half decent price.

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REV counter going right round

REV counter going right round

Re: REV counter going right round

Re: REV counter going right round

Re: REV counter going right round

Re: REV counter going right round

Re: REV counter going right round

Re: REV counter going right round

Re: REV counter going right round

Re: REV counter going right round

Re: REV counter going right round

Re: REV counter going right round

Re: REV counter going right round

Re: REV counter going right round

Re: REV counter going right round

Re: REV counter going right round