How can I check the signal on my tachometer?
Verify you have a good signal that is at least 8V peak to peak in amplitude (requires an oscilloscope). Some ECU signals are not strong enough to drive the tachometer. Try switching the signal input. Marshall tachometers come with 2 signal input options. Verify correct signal and ground connections (see above).
Where do you find a tach signal on a car?
Verify you are using a proper signal source. The most common locations for a tach signal are the negative terminal of the ignition coil or tachometer output terminal (HEI, Ignition Control Boxes or ECU).
What kind of wire do I need to hook up my tachometer?
Use the SIG 1 (In-Dash Tach) or purple wire (Pedestal Mount Tach) input (see “Signal Hookup” in the instructions). If you have a modern ignition system and your ECU (computer) has a dedicated 12V tachometer signal output you can use this to drive the tachometer.
What kind of signal does a Marshall tachometer need?
Verify 12V ACC, signal and ground connections (see above). Verify you have a good signal that is at least 8V peak to peak in amplitude (requires an oscilloscope). Some ECU signals are not strong enough to drive the tachometer. Try switching the signal input. Marshall tachometers come with 2 signal input options.
How does OBD 2 work on a Porsche 997?
Learn your car’s language. This article applies to the Porsche 997 (2005-2012). Your ride’s On-Board Diagnostics II (OBD II) system automatically checks and tests different parts of your car. When your OBD II system detects a problem with one or more components, it triggers a light to go on as a warning.
What does check engine light mean on Porsche 997?
A check engine light is not the end of the world. Learn your car’s language. This article applies to the Porsche 997 (2005-2012). Your ride’s On-Board Diagnostics II (OBD II) system automatically checks and tests different parts of your car.
What are the symptoms of a Porsche 991 O2 sensor failing?
The 991 has four O2 sensors: two for each catalytic converter on each side of the car. Common symptoms of a failing O2 sensor include: Your car irregularly idles at warm-up or after it’s been running for a while
What to do if your Porsche 997 has a bad catalytic converter?
Replace engine components (again, like the spark plugs, spark plug wires, and distributor cap) as part of your next round of routine maintenance. Check coils, coil packs, and catalytic converter. One Porsche owner reports that if you can smell rotten eggs in your exhaust, then your catalytic converter is likely bad.