Just bought a JDM EG9 cluster... DID I get the shaft?
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Honda-Tech Member
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From: Upper Midwest
Just bought a JDM EG9 cluster... DID I get the shaft?
Just bought one on here. I installed it and the RPM gauge is off by 1000 rpms. My car idles smooth at 1000rpms, but after I installed it the gauge reads 2000 at idle. WTF?? Did I get the shaft?
Any ideas on what I can do to fix the problem?
Any ideas on what I can do to fix the problem?
Honda-Tech Member
Joined: Mar 2009
Posts: 1,928
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From: Dover,DE
Re: Just bought a JDM EG9 cluster... DID I get the shaft?
Pics of the cluster? And what kinda car are you tring to put it in. I do realize its a Jdm cluster but the RPMS dont change... I have a Jdm eg6 cluster in my car and it didnt change when i swapped it in.
Re: Just bought a JDM EG9 cluster... DID I get the shaft?
Could be incorrectly calibrated .. maybe p.o. dicked around with the needle. Anyway, here's how you fix it: http://honda-eg6.blogspot.com/2010/1...on-how-to.html
Reproduced below for posterity:
RPM Meter calibration - how-to
My rpm was not reading correctly. I compared the reading to my APEXI VAFC and based on the gearing calculation versus the speedometer reading.
I did a searching on the internet on how to calibrate and all the information I got was to remove the needle, set the car at idling & plug it back, which I didnt want to do as it might damage the meter.
I was thinking how did the manufacturer did it. I remove the meters from the clusters and found the answers!
If u take a look at the top of the RPM meter, u will see 2 potentiometer aka pot (variable resistor). This is where u can do the calibration or adjustments.
Since it cant be adjusted once it installed back into the clusters/casing. I used crocodile clips to connect to the back of the clusters to get the signals.
Next step is to start the engine and adjust the resistors by comparing to my VAFC readings. Frankly speaking, I do not know the reason for the two pots. Anyway with the meter facing you, turning the pots anti-clockwise will lower the rpm reading. If u max out one of the pot, and the rpm is still too high, just turn the other pot also.
Instead of using VAFC, u can try to borrow a RPM meter that is known to be accurate and use it as a reference.
.
Hope this will help most of you who have inaccurate rpm readings.
Reproduced below for posterity:
RPM Meter calibration - how-to
My rpm was not reading correctly. I compared the reading to my APEXI VAFC and based on the gearing calculation versus the speedometer reading.
I did a searching on the internet on how to calibrate and all the information I got was to remove the needle, set the car at idling & plug it back, which I didnt want to do as it might damage the meter.
I was thinking how did the manufacturer did it. I remove the meters from the clusters and found the answers!
Next step is to start the engine and adjust the resistors by comparing to my VAFC readings. Frankly speaking, I do not know the reason for the two pots. Anyway with the meter facing you, turning the pots anti-clockwise will lower the rpm reading. If u max out one of the pot, and the rpm is still too high, just turn the other pot also.
Instead of using VAFC, u can try to borrow a RPM meter that is known to be accurate and use it as a reference.
.
Hope this will help most of you who have inaccurate rpm readings.
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