Autometer tach on 04 ls1...suggestions??
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Staging Lane
Joined: Jan 2010
Posts: 65
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Autometer tach on 04 ls1...suggestions?? I´ve just started my new conversion engine, 04 LS1/A4 GTO, on my 73 camaro, also have installed autometer carbon fiber instruments, read that if a put a resistor between the signal ans 12v suply i will be able tio read the engine ECU RPM signal, also need to put the tach on 4 cyl. mode. How can i know if the reading is OK, the engines idles high (according to sound) and tach shows 3k rpm, think that reading is not ok.
Please your help..
Please your help..
Registered User
Joined: May 2010
Posts: 38
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Re I assume you are using a stand alone aftermarket harness? Should have a computer ALDL port to plug into for codes, etc. You can read rpm as well. Most mechanics have one if you can drive the car there. I had the same issue with idle on an LS7 install but it was a bad "drive by wire" pedal. The pedals on LS2 and LS7 sweep a signal as its pressed through its range and mine wouldnt let the engine see under about 3K RPM. Changed the pedal and it was fine. I just did the resistor thing today on another LS7 install. 1K / 1/4 -1/2 watter works like a charm. I am using an autometer tach. Where the 12V+ and the SIG wires hook to the tach, I spliced into each wire with the 1K resistor.
I´ve just started my new conversion engine, 04 LS1/A4 GTO, on my 73 camaro, also have installed autometer carbon fiber instruments, read that if a put a resistor between the signal ans 12v suply i will be able tio read the engine ECU RPM signal, also need to put the tach on 4 cyl. mode. How can i know if the reading is OK, the engines idles high (according to sound) and tach shows 3k rpm, think that reading is not ok.
Please your help..
Please your help..
