Rev counter not not working

television

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Has it ever worked, does it have the original radio
 

turbopete

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are these fed from the alternator or the crank sensor?
 
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mercmancdi

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Has it ever worked, does it have the original radio

Hi Malcolm only got car so don't know how long it has not worked , but its not org radio .
 

whitenemesis

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I'm intrigued Malcolm :confused: :confused: what could be the connection with lack of tacho & an original radio?

Speed signal?

(sorry, my name's not Malcolm..)
 
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television

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I'm intrigued Malcolm :confused: :confused: what could be the connection with lack of tacho & an original radio?

The green/yellow wire that goes to pin 1 on the radio is the signal that increases the volume as the car goes faster, the wrong radio can short out this signal.
Best to unplug the radio making sure that you have the code if needed and see if the rev counter works, if it does then clip the wire on pin 1, if it makes no difference the fault is elsewhere
 

EmilysDad

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The green/yellow wire that goes to pin 1 on the radio is the signal that increases the volume as the car goes faster, the wrong radio can short out this signal. .....


Easy when you know :lol::lol:
 

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Yep, everyday can be a learning experience.
 
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The green/yellow wire that goes to pin 1 on the radio is the signal that increases the volume as the car goes faster, the wrong radio can short out this signal.
Best to unplug the radio making sure that you have the code if needed and see if the rev counter works, if it does then clip the wire on pin 1, if it makes no difference the fault is elsewhere

Very detailed answer Malcolm , if that turns out to be the problem I would never have solved it ,, will try your suggestion. Thank you
 
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television

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Very detailed answer Malcolm , if that turns out to be the problem I would never have solved it ,, will try your suggestion. Thank you

It may not be that, in which case we can go further
 

turbopete

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Crank sensor always

i know of many diesels that take the rev counter feed from the alternator. fords particularly. often if the alternator stops charging the rev couter stops working. it may be different on the newer common rail engines, hence why i asked the question
 

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