Lazy rev counter

Post by **Mondeo55** » Fri May 19, 2023 7:48 pm

Hi all,

Whacked a massive pot hole, hell of a bang on the poor car, nearly fell in it was so deep!!! Straight after was having rev counter problem….it’s as if it’s gone lazy, will move but no more than around 2500 RPM. Was doing 1500 Rpm at 70mph in fourth at one point.

I’d appreciate if anyone can give any pointers on the right direction.

1995 2.5 24v model, manual trans.

Thanks all

Si

Post by **Micron** » Fri May 19, 2023 8:45 pm

Maybe you have disturbed the connection to the speed sensor?
Apart from this issue does it still drive ok, does it now pull to one side?

Post by **Mondeo55** » Fri May 19, 2023 8:47 pm

Micron wrote: ↑
Fri May 19, 2023 8:45 pm
Maybe you have disturbed the connection to the speed sensor?
Apart from this issue does it still drive ok, does it now pull to one side?

Where is that located? No pulling to one side, cars driving normally just this rev counter issue….it’s gotten a bit worse now, still moves but getting more lifeless

Post by **Micron** » Fri May 19, 2023 8:50 pm

Mondeo55 wrote: ↑
Fri May 19, 2023 8:47 pm

Micron wrote: ↑
Fri May 19, 2023 8:45 pm
Maybe you have disturbed the connection to the speed sensor?
Apart from this issue does it still drive ok, does it now pull to one side?
Where is that located? No pulling to one side, cars driving normally just this rev counter issue….it’s gotten a bit worse now, still moves but getting more lifeless

It is in one of the worst place’s possible, on top of the gearbox, BUT you have to remove a few things to stand any chance of getting near it!
Try and have a look with a powerful light to see if you can locate it.

Post by **Mondeo55** » Fri May 19, 2023 9:02 pm

Doh! The bang was on the left so the shock through the gearbox may have disturbed it. It’s a good place to start looking I guess!

Thank you

Post by **Kit** » Fri May 19, 2023 9:13 pm

Is the Rev counter, ran from a feed on the Dizzy

Kit

Post by **Micron** » Fri May 19, 2023 9:15 pm

Kit wrote: ↑
Fri May 19, 2023 9:13 pm
Is the Rev counter, ran from a feed on the Dizzy

Kit

That’s a good point Duncan, I do wonder if they are connected in some way?

It’s worth a check of the dizzy connections Si.

Post by **Mondeo55** » Fri May 19, 2023 9:41 pm

Kit wrote: ↑
Fri May 19, 2023 9:13 pm
Is the Rev counter, ran from a feed on the Dizzy

Kit

I’ve not checked, I’ll lift the bonnet tomorrow for a closer look.

What am I looking for?….loose connection or is it a sign the dizzy cap is failing?

Post by **Micron** » Fri May 19, 2023 9:43 pm

Mondeo55 wrote: ↑
Fri May 19, 2023 9:41 pm

Kit wrote: ↑
Fri May 19, 2023 9:13 pm
Is the Rev counter, ran from a feed on the Dizzy

Kit
I’ve not checked, I’ll lift the bonnet tomorrow for a closer look.

What am I looking for?….loose connection or is it a sign the dizzy cap is failing?

Yes and anything else that you can think of

Post by **Mondeo55** » Fri May 19, 2023 9:46 pm

Thanks both, I’ll have a poke around tomorrow or Sunday

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