Lazy rev counter

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Mondeo55
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Re: Lazy rev counter

Post by Mondeo55 » Sat May 27, 2023 9:29 pm

It’s back! Took the car out today and the issue returned….I think
Lazy was the wrong word rather inaccurate or out of sync suit better…..when it’s cold it’s perfect but as the car gets to temperature it slowly ‘fades’. Always gives a reading but it’s not correct.

So either a speed sensor issue, dizzy starting to fail or earth on top of the gear box needs a clean?

Any other suggestions?

Tott61
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Re: Lazy rev counter

Post by Tott61 » Sun May 28, 2023 5:47 pm

According to the wiring diagram the rec counter is connected to the ignition coil in the distributor. So I'd think that the problem is with the ignition coil especially as it happens more when warm.

Hope this helps

Kit
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Re: Lazy rev counter

Post by Kit » Sun May 28, 2023 7:19 pm

:idea: You could try another set of clocks, to see if it’s them :idea:

Kit

cpt black
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Re: Lazy rev counter

Post by cpt black » Mon May 29, 2023 9:18 am

Does the car still run ok when the rev counter fades does it miss fire etc lack of power :?:
or still run fine if it does
Maybe the pinnacle Rev counter failing or speed sensor failing

Mondeo55
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Re: Lazy rev counter

Post by Mondeo55 » Wed May 31, 2023 9:57 am

Thanks for the suggestions all….

The car runs fine as the counter falls out of sync, only noticeable thing is that the secondaries don’t open as the revs never get high enough to ‘activate’ them. Usually kicks in/opens at 4000RPM.

No misfires or anything like that, tick over is all good etc.
Last edited by Mondeo55 on Wed May 31, 2023 10:07 am, edited 1 time in total.

Mondeo55
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Re: Lazy rev counter

Post by Mondeo55 » Wed May 31, 2023 9:59 am

Tott61 wrote:
Sun May 28, 2023 5:47 pm
According to the wiring diagram the rec counter is connected to the ignition coil in the distributor. So I'd think that the problem is with the ignition coil especially as it happens more when warm.

Hope this helps

This forms part of the distributor I take it? Looks a straight forward fit.

Image

cpt black
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Re: Lazy rev counter

Post by cpt black » Wed May 31, 2023 10:25 am

I would replace the dissy as a whole unit

Mondeo55
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Re: Lazy rev counter

Post by Mondeo55 » Wed May 31, 2023 10:34 am

cpt black wrote:
Wed May 31, 2023 10:25 am
I would replace the dissy as a whole unit
Any suggestions on a good quality one? The car came with a cheap one when I bought it and it split inside causing a breakdown. The plastics had gone all brittle

I got mine from RockAuto, it was a little of £100, came within about 3 days?

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Re: Lazy rev counter

Post by cpt black » Wed May 31, 2023 10:40 am

Try ATP on the internet there in Germany be about £85 posted
is this a Temic system or still key fob
Last edited by cpt black on Wed May 31, 2023 10:43 am, edited 1 time in total.

Mondeo55
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Re: Lazy rev counter

Post by Mondeo55 » Wed May 31, 2023 10:42 am

cpt black wrote:
Wed May 31, 2023 10:40 am
Try ATP on the internet there in Germany be about £85 posted
Great stuff, thank you! If it drives the rev counter it could be the fault

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