TPS and Tach Signals
03-20-2006, 12:19 PM
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TPS and Tach Signals
O.K., here's my problem:
I am installing some electronics in my that require a square wave signal for engine RPM. I was hoping to tap into a wire that feed the instrument cluster tachometer, but I have not found it yet. Any suggestions?
Also, I need to tap into a Throttle Position Sensor wire in order to monitor throttle position. There appears to be two sensor wires, but I throw a code in the PCM when I tap into either one. This is a fly-by-wire throttle body. What gives?
I am installing some electronics in my that require a square wave signal for engine RPM. I was hoping to tap into a wire that feed the instrument cluster tachometer, but I have not found it yet. Any suggestions?
Also, I need to tap into a Throttle Position Sensor wire in order to monitor throttle position. There appears to be two sensor wires, but I throw a code in the PCM when I tap into either one. This is a fly-by-wire throttle body. What gives?
03-20-2006, 04:29 PM
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Originally Posted by TurboBerserker
The white wire leading into the gauge cluster is the tach signal wire -- be aware that it gives a 4 cylinder signal and interpolates it.
Which code are you throwing for the TPS. I used the green wire, btw. Is this for a squirt?
Which code are you throwing for the TPS. I used the green wire, btw. Is this for a squirt?
03-20-2006, 08:04 PM
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Originally Posted by TurboBerserker
The white wire leading into the gauge cluster is the tach signal wire -- be aware that it gives a 4 cylinder signal and interpolates it.
Thanks,
Boo.
03-22-2006, 11:37 AM
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Originally Posted by TurboBerserker
Ah, I meant a megasquirt stand alone PCM. I had to put some resistance in the TPS line to even out the signals. The code comes from having TPS 1 read some voltage and TPS 2 read another.
Thanks,
Boo.
10-26-2015, 09:06 PM
#7
I got in because I thought somebody might have pushed me in the direction of the tach pulse wire at the PCM so I can install my window switch and my rev limiting / shift light / digital recall of last and highest rpm achieved.
A little brotherly help here? It's a '00 5.3 1500 4x4. It's a vin T truck.
Need to set this up asap! Thanks.
A little brotherly help here? It's a '00 5.3 1500 4x4. It's a vin T truck.
Need to set this up asap! Thanks.
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