So I bought an impul 260km/hr speedo for an s13 about half a year ago off ebay. In that timeframe I got married, went on a three month honey moon, stored the car for winter, etc...
I finally got around to installing the speedo about a week ago... what happened to my horror was that the speedo itself didn't work.
Anyways I was lazy to take it out since, and what I did was just leave it. What was happening was that the speedo jumped to the first needle point (10km before the bigger jump to 20km) and then just be stuck there and ocassionally bump down to 0 as I'm driving but when I'm at a stop jump to that first 10km line.
Anyways today I took it out and gave it to my father to inspect. He found out that the needle was slightly on an off angle.. in other words if you blow on the needle it was going hard, so he said it was mechanical. I assumed first it was something electronicly related, like a capacitor or resistor, I wouldn't know. Half an hour later, he managed to fix that by luck although the chances were so slim. So now when it's blown on it rotates fine. The speedo was shook around as well to test if the needle is going to sink in or anything like that, and well, it's fine now. It blows normally and falls back down on it's own.
I put it back in the car and what happens? As soon as I crank the car OR turn the key to give the car battery power... the needle jumps to the 20km line and stays there.
I took it out for a spin, and what hapens? Well first it stays there, then it kind of reduces itself and eventually as I really drive, it reduces itself to 0. When I come to a stop it goes back to the 20km/hr.
This is gay.. I don't want to go back to a standard 180km/hr speedo after having this in the car for the last 3 weeks or so lol... plus it was money spent...
I want to fix it/get it fixed... what's up... help me out people...
Speedo not working (unique circumstances)
Re: Speedo not working (a_ahmed)
Your first thought was right, It has to deal with capacitors. You are trying to convert to cluster with a Bigger Number right? There's a write up somewhere, where u gotta solder 2 10k resistors in 2 different places and then calibrate the speedo. Do a search on here and on google. I've seen it and have it bookmarked on other not working computer so its of no help. I've seen the step by step article somewhere so go search.
Re: Speedo not working (Tr0uble)
ive searched but all ive found is 180km to 180mph conversions... thats not what you mentioned i hope? and its not the digital speedo either so... whats up... someone please
Modified by a_ahmed at 9:23 PM 3/25/2007
Modified by a_ahmed at 9:23 PM 3/25/2007
Re: Speedo not working (a_ahmed)
Well I posted the issue on 3 different forums including nico.
A friend of mine suggested that in the meantime that I attempt to contact impul as well, which I did (Impul-USA) however I doubt they'll be of much help unfortunately............
I have however found the Impul-Japan page with the speedo (and many others for that matter):
http://www.impul.co.jp/products/SM.htm
Now if only it'll begin working heh...
A friend of mine suggested that in the meantime that I attempt to contact impul as well, which I did (Impul-USA) however I doubt they'll be of much help unfortunately............
I have however found the Impul-Japan page with the speedo (and many others for that matter):
http://www.impul.co.jp/products/SM.htm
Now if only it'll begin working heh...
Re: Speedo not working (a_ahmed)
anyone please?
Re: Speedo not working (a_ahmed)
Before you read below this line make absolutely sure the gauge is wired correctly. The plugs may still fit the back of the gauge, however, the wires might not be running to the right location which requires re-pinning the plugs. If you are 100% certain you wired it correctly continue on-----------------------------------------------------------------------------------------
Disclaimer:By reading the contents below you hereby agree to the terms of use and any changes made to this disclaimer at any time. By reading below, you hold this site and I not legally responsible for any damages due to advice given. This site and I take no responsibility for consequences of any actions that arise from advice given. Any opinion is given with information provided by you or me and can not be taken as absolute. All repairs/installations/modifications should be undertaken by a competant and qualified technician. By using this advice, you understand and agree that all advice given and followed are at your own risk and do not hold this site or I responsible for any damages.
Electrical Issue:
The 180km/h to 180mph conversion applies to you still. Even though you are still in km/h the speedo is confused. There is a big difference in translation from 180km/h to a big jump of 260km/h. That's why it won't go above 20km/h.
Electronic Speedometer (not to be confused with digital speedo) A pulse generator (or tach generator) installed in the transmission measures the vehicle's speed. It communicates this via electric or magnetic pulse signals, which are either translated into an electronic read-out or used to manipulate a traditional magnetic gauge assembly.
Little lesson in electronics:-In electrical circuits resistance is one controlling factor of current.Basics of Ohm's law. V=Voltage I=Current R= Resistance V=IxR
Say for instance:180km/h gauge= 1 ohms (keeping it simple)260km/h gauge= 12 ohms
Say for instance:At 180km/h the pulse generator sends out signals equivalent to 12 volts.
Lets look at this in equation form and see how this affects the circuit12volts/1 ohms = 12 ampNow lets throw in the 260km/h gauge12volts/12 ohms = 1 amp
If a current of 12 amps makes the needle peg out to 180km/h on the 180km/h gauge, it would require you to be going 12 times faster to make the 260km/h gauge read 180km/h. The proportion is not identical to yours for all intensive purposes.
Since the device that translates the pulse(electric sender) is calibrated to a 180km/h gauge. Its like a Japanese guy trying to talk to a white guy.Same reason why the 180kmh to 180mph conversion requires the use of resistors. What did the resistors do? Increase the resistance in the circuit.On a speedo there is whats called potentiometers(manually adjustable resistors) However, signal is outside the adjustable range of the potentiometers, so basically you have to solder on the resistors.When your camber angle for alignment is outside the adjustable range what do you do? Buy a camber kit.
Hopefully your dad didn't screw the pooch on "fixing" the "mechanical gauge" [No disrespect intended]
Hope this was helpful and Is of future use to anyone tinkering with gauges.
Disclaimer:By reading the contents below you hereby agree to the terms of use and any changes made to this disclaimer at any time. By reading below, you hold this site and I not legally responsible for any damages due to advice given. This site and I take no responsibility for consequences of any actions that arise from advice given. Any opinion is given with information provided by you or me and can not be taken as absolute. All repairs/installations/modifications should be undertaken by a competant and qualified technician. By using this advice, you understand and agree that all advice given and followed are at your own risk and do not hold this site or I responsible for any damages.
Electrical Issue:
The 180km/h to 180mph conversion applies to you still. Even though you are still in km/h the speedo is confused. There is a big difference in translation from 180km/h to a big jump of 260km/h. That's why it won't go above 20km/h.
Electronic Speedometer (not to be confused with digital speedo) A pulse generator (or tach generator) installed in the transmission measures the vehicle's speed. It communicates this via electric or magnetic pulse signals, which are either translated into an electronic read-out or used to manipulate a traditional magnetic gauge assembly.
Little lesson in electronics:-In electrical circuits resistance is one controlling factor of current.Basics of Ohm's law. V=Voltage I=Current R= Resistance V=IxR
Say for instance:180km/h gauge= 1 ohms (keeping it simple)260km/h gauge= 12 ohms
Say for instance:At 180km/h the pulse generator sends out signals equivalent to 12 volts.
Lets look at this in equation form and see how this affects the circuit12volts/1 ohms = 12 ampNow lets throw in the 260km/h gauge12volts/12 ohms = 1 amp
If a current of 12 amps makes the needle peg out to 180km/h on the 180km/h gauge, it would require you to be going 12 times faster to make the 260km/h gauge read 180km/h. The proportion is not identical to yours for all intensive purposes.
Since the device that translates the pulse(electric sender) is calibrated to a 180km/h gauge. Its like a Japanese guy trying to talk to a white guy.Same reason why the 180kmh to 180mph conversion requires the use of resistors. What did the resistors do? Increase the resistance in the circuit.On a speedo there is whats called potentiometers(manually adjustable resistors) However, signal is outside the adjustable range of the potentiometers, so basically you have to solder on the resistors.When your camber angle for alignment is outside the adjustable range what do you do? Buy a camber kit.
Hopefully your dad didn't screw the pooch on "fixing" the "mechanical gauge" [No disrespect intended]
Hope this was helpful and Is of future use to anyone tinkering with gauges.