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Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series / 4 Series > E36 (1991 - 1999)

E36 (1991 - 1999)
The E36 chassis 3-Series BMW was a huge hit among driving enthusiasts from the first moment the car hit the pavement. The E36 won numerous awards over the years it was produced and is still a favorite of many BMW enthusiasts to this day! -- View the E36 Wiki

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  #1  
Old 10-04-2007, 08:59 AM
E36addict E36addict is offline
E36 " Perfection"
Location: Newcastle upon Tyne , England
 
Join Date: Nov 2006
Posts: 5
Mein Auto: E36,318is
Help with Rev counter needed ?

Help !
I have an issue with myRev counter.
It just doesnt seem to work , A while ago my rev counter and temp gauge stopped working.
So on to E bay I went and managed to ick up a replacement for next to nothing.
About an hour ago I fitted this new display and everything works apart from the Rev counter.
So the speedo works , the fuel gauge works , even the temp is now working but still the
Rev counter is dead .
Any ideas ?

cheers !
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  #2  
Old 10-04-2007, 10:39 AM
SCANDINAVIAN13 SCANDINAVIAN13 is offline
Resident Pilot
Location: Reston, VA
 
Join Date: Apr 2007
Posts: 1,778
Mein Auto: BMW Not Found
Sounds like the sender isn't working. I'm not sure how to fix that, though.
For your own search reference, it's called a Tachometer.
A few searches using that should turn up some results.
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  #3  
Old 10-04-2007, 05:11 PM
spoddy spoddy is offline
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Location: Northern Ireland
 
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Posts: 132
Mein Auto: BMW 320I e36 automatic
hi mate

same thing is wrong with my cluster, rev/mpg and temp gauges all not working.
fuel and speedo do work its really annoying, was gonna get a new cluster, but heard you get a red dot on the cluster and need to have mileage recoded.
i think the camshaft sensor needs replacing for the revs, try the pelicanparts site for explanation of doing this.

let me know how you get on.
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  #4  
Old 10-05-2007, 04:03 AM
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Pirate_copy Pirate_copy is offline
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Location: Devon, UK
 
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Mein Auto: M3
Am 99% sure the revs dont work off the camshaft sensor buddy

This just checks the position of it to ensure the timing is correct
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  #5  
Old 10-05-2007, 01:41 PM
spoddy spoddy is offline
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Mein Auto: BMW 320I e36 automatic
is it the crankshaft sensor?

i thought the camshaft sensor would sense the cams spinning round, and the faster they spin then the higher the needle goes?

or maybe its that awkard one under the thermostat housing above the geared wheel, dunno what is called.

i wouldn't mind knowing what does send the info to the dme or cluster.

so what controls the mpg dial?

cheers
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  #6  
Old 10-05-2007, 01:53 PM
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Pirate_copy Pirate_copy is offline
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The mph is worked off a vacuum mate

I will admit that i dont know for sure, but am sure the rpm runs off the coils or a related part
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  #7  
Old 10-05-2007, 02:45 PM
spoddy spoddy is offline
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Mein Auto: BMW 320I e36 automatic
so the crankshaft and camshaft have nothing to do with rpms.

aaaaaaaaaaaaaaaaaaaaaaahhhhhhhhhhhhhhhhhhhhhhh

how can i fix it then?

pirate whats happened? you don't know for sure? lol

does the mpg below the rpm work off a vacuum. so how can you fix the rpms, it doesn't sound right working off the ignition coils?

i dunno i'm lost.
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  #8  
Old 10-06-2007, 03:26 AM
spoddy spoddy is offline
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Mein Auto: BMW 320I e36 automatic
does anyone know where exactly the vacuum thingy is
so I can check it out?

gonna take the cluster out and check soldered connections, any
thing else to look for?

cheers
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  #9  
Old 10-06-2007, 03:40 AM
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Pirate_copy Pirate_copy is offline
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Wait wait wait, i cant believe i made the mistake AGAIN!!

The mpg is NOT run off a vacuum, like i stated yesterday. I am sorry guys

It is calculated from the road speed, engine speed and fuel injection timing

Sorry
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  #10  
Old 10-06-2007, 12:23 PM
spoddy spoddy is offline
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so its a software thing then?
in the dme?

what components work together to make it all happen?

think i'll bring my cluster in and have a looksie
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  #11  
Old 10-06-2007, 01:05 PM
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Pirate_copy Pirate_copy is offline
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Yes buddy, the DME deals with it
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