What is stoichiometric air/fuel ratio?
The stoichiometric mixture for a gasoline engine is the ideal ratio of air to fuel that burns all fuel with no excess air. For gasoline fuel, the stoichiometric air–fuel mixture is about 14.7:1 i.e. for every one gram of fuel, 14.7 grams of air are required.
How to install wideband air / fuel ratio gauge on your vehicle?
Moving back to the top of the vehicle, remove the wiring harness for the Air/Fuel gauge from the packaging. 19. Run these wires behind the driver’s side valve cover, down the back of the engine towards your exhaust system. Be very carefully to avoid parts that get hot. The goal is to get the wiring as flush with the firewall as possible. 20.
What kind of harness do I need for fuel injection?
This basic harness allows the use of a GM Throttle Body fuel injection system on GM V8 and V6 engines, and can be adapted to other applications, such as Jeep engines – (complete kits available). Requires the use of a Service Number 12277747 ECM, and the correct PROM chip for your application. -With manual transmission.
What kind of harness does a jet engine use?
This harness replaces the factory GM crate Ram Jet engine harness and MEFI ECM. It uses a tuner friendly production car 1991-92 Tuned Port ECM and PROM. $725.00
How do you install a fuel gauge on a car?
With the grommet removed, carefully cut an ‘X’ in the center of the grommet using the razor knife. 25. Route the wiring for the Air/Fuel gauge through the grommet, into the firewall, as shown. 26. Pull the excess wire inside the car, and secure the wiring under the hood with zip ties.
What should the fuel ratio be on an O2 sensor?
Plugged in OR disconnected, you’ll find 3.3V on one sensor circuit wire (AFL+ on the diagram), and 2.9 – 3.0V on the other (AFL-). NEITHER will change significantly during mixture variations. 12V on one heater wire, and a computer controlled ground on the other, just like your typical heated O2’s.
What should the FB be on a fuel ratio sensor?
They’re also not displayed like typical fuel trims, so remember this: Values above 1.00 represent positive trims, and values below 1.00 represent negative. For example, if your data showed AF FB at 1.13 and your AF FB AVE at .98, that would translate to a short term of 13% and a long term of -2%.
What should the fuel ratio be on a Bosch sensor?
Circuit checks are almost identical to the Toyota sensor, with a similar Bosch sensor-side wiring color format, and similar wiring diagram designations. Plugged in or disconnected, you should find 2.2V on AFS+ and 1.8-1.9V on AFS-.
What does 3.3V mean on a fuel ratio sensor?
An error occurred while retrieving sharing information. Please try again later. Scan data will show a voltage data PID associated with the A/F sensor signal. 3.3V represents stoich, lower indicates rich, and higher indicates lean. Seeing spikes in the data is not unusual during sudden changes in engine load.