My rev counter goes mad when I accelerate hard leaping up past 6k on off the scale!! I've changed the counter with another one but it still does it. Anyone know what else it could be???

CheeRS

Dave

 

is a 4x4? as mine does that sometimes the problem is userly the 3 multiplugs across the bulk head

 

very common problem on the sapphs,its caused by a stray signal getting in to the rev counter wire (the green one at the coil) and is know to be caused by bad earths in the loom and possibly the ignition amp and the 3 block connectors on the bulkhead,
best thing to do is remove and clean all the earths especially the one on the inlet manifold plenum,make sure the 2 halves of all the block connectors are pushed tight together,disconnect and reconect the ignition amp connector a couple of times to get a good connection,and check all connections on the coil for fraying and loosness

 

agreed with Velocity!!

if it's 4x4, pay special attention to the multiplug on the bulkhead (one of the 3) with the larger wires.

 

another favourite is the tdc sensor, this can make the rev couter bounce all over when it starts to fail, about 25 quid for a new one.

 

sorry to high jack your post but saves me starting a new one,
my rev counter is not working at the moment could someone tell me where it takes the signal from and what clour is the wire..
thanks
jay

 

what car do you have

 

Its a golf with a cossie engine,
its got a 2 wheel drive engine loom as it does not have the large connecters.

 

from the coil negative terminal, green wire.

 

cheers, was not 100% sure

 

Hi there - just wanted to thank everyone who replied to this. I finally got a chance to look at it and after 3 months of being totally p**sed off with the rev counter - it took all of 10 seconds to push together the 3 multiplugs properly and now it works perfectly!!! I can't beleive I played around with it so much when it was so simple!

CheeRS guys!




Dave

 

glad it's sorted! Just one of those funny quirks that you learn about that's so easy to fix once you know where to look!! lol