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Normally this unit is called an ECM (Electronic Control Module), injection computers are normally used in the aftermarket fuel injection systems.
Basically the system works by controlling the pulse width (injector timing) of the injectors compaired to several factors:
- Fuel line pressure
- RPM's (engine speed, not vehicle speed)
- Air flow
- Ambient air temperature
- Oxygen (in exhaust)
- Engine temperature
- Barometric pressure (only on some systems, other systems 'guess' the pressure based on output readings)
- Manifold Vacuum
- Throttle position (user demand)
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What causes a Jeep Wrangler Sport not to start without using starter fluid when it runs fine after starting?
In order to determine the problem, we will need more information about your vehicle. Information such as the year, make, and model, would be helpful. However, as a general answer, here are my remarks: A vehicle that is fuel injected, either with a TBI (Throttle Body Injection) or PFI (Port Fuel Injection), relies on several sensors to determine how much fuel needs to be supplied to the engine in order to start. Two very important sensors in particular are the coolant temperature sensor and the air temperature sensor. If a sensor sends a 'warm' signal to your vehicles computer, then the computer will assume the car has been running and not inject much fuel at all. If the sensor was unplugged, then the computer would inject too much fuel. If the vehicle is carbureted, a common reason for cold start failure is the choke which is also known as a choke coil. Since there is no onboard computer to give the car more fuel in cold weather, the solution is to reduce the amount of oxygen that is supplied to the engine. When operational, the bi-metal choke relies on temperature to expand and contract. When it does this, the choke coil linkage pulls or pushes a metal plate, sometimes called a butterfly, covering the air intake of the carburetor. After time the choke coil will lose it thermostatic properties and fail to push or pull the linkage. In short, check your carbureted vehicle when cold. The butterfly over the carburetor should be closed. If your vehicle is fuel injected, you will likely need to test or replace the air and/or collant temperature sensor. -- JJohnson
Where are the fuel injectors located?
If you have a MPFI (multi port fuel injection) the injectors are either on the intake manifold or the cylinder head in either case they are usually close to where the intake manifold and cylinder head meet.There will be a fuel line feeding all injectors and a electrical plug to each one.Since I don't know what vehicle you are referring to,it is possible it has throttle body fuel injection,looks a little like a carburetor and will be on the intake manifold.
Does a crank shaft sensor control the fuel injection timing?
There are multiple sensors used to control fuel injection in an engine. Depending on the year, make, and model or the vehicle, there could be upwards of 20 sensors used to determine the amount of fuel injected into an engine.For most modern cars, the primary sensors, which the computer uses to determine fuel needs, are the Oxygen (O2), the Mass Air Flow (MAF), and the Crank/Cam positions sensors.The O2 sensor measures the amount of oxygen in the post combustion exhaust stream, and determines if the engine is running lean (not enough fuel) or rich (too much fuel).The MAF sensor measures the amount of air coming in through the vehicle's intake manifold, and determines the amount of fuel needed for the volume of air the engine is moving.The Crank/Cam position sensor measures the position of either the crankshaft or the camshaft, and tells the computer if the engine is running or not; if this sensor is not working, the fuel injectors will not deliver fuel to the engine.
What problems would you run into changing Vortec 4.3L Fuel injection to carburetor?
lots of problems.like changing computer, inlet manifolds etc. probably cheaper to buy new motor not... the point of switching to a carburetor IS to get rid of the stupid computer! It's called vacuum advance, genius.
How are car dashboards made?
This may not be true for all makes of cars, but some basic dashboards are made using the process of injection molding in which the entire dashboard is molded in one piece. The lights, radio, glove compartment, etc. are added at the factory producing the vehicle.
How do you adjust the carb on a Chevy 2.8 liter fuel injection v6?
There is not a carb on a fuel injected vehicle. It has a throttle body. the amount of air to fuel ratio is controlled by the computer.
Is a 1992 explorer a fuel injection vehicle?
Yes it has FI.
What are the two basic types of fuel delivery systems in passenger vehicle?
Diesel and Gasoline The Carburetor (old school) and fuel injection.
What takes the place of the choke in the fuel injection system?
The computer controlled fuel injection/air intake systems. So a computer chip takes the place of a choke.
How can you wire a fuel injection engine up in a vechicle which did not have injection before?
There is not an easy way to do this. An injection system has to have a computer to work and a computer for a carburetor system will not work. There are some after market systems that include all the parts, but are usually expensive.
Car would not start until gas pedal is depressed?
If the vehicle is equipped with a fuel injection system, it may be clogged. When a vehicle has fuel injection, the gas pedal does not need to be depressed to get it started. It sounds like the vehicle needs to be taken to a mechanic.
WHAT IS DIAGNOSIS FOR vehicle COD code PO202?
The diagnosis for vehicle COD code PO202 is an "injection circuit malfunction".
Adaptations to vehicle to make it run on E85 fuel?
If your vehicle has electronic fuel injection: http://www.change2E85.com If your vehicle has a carb: http://www.e85carbs.com
Can a vehicle have a carburetor and also fuel injection?
No. A single point fuel injection system looks very much like a carburetor though.
Is an Arctic Cat ZR 600 EFI fuel injected?
By the vehicle's nomenclature, it would seem so - "EFI" stands for "Electronic Fuel Injection", and usually implies a direct injection system (as opposed to indirect injection or common rail injection).
Difference between multi point fuel injection and carburetor?
The difference is how fuel is introduced to the engine. A carburated vehicle uses air flowing past a series of valving to suck fuel in to the engine mechanically. A fuel injected vehicle uses fuel injectors controlled by a computer. The computer decides when to open the fuel injector which then shoots a burst of fuel in to the engine.
Did 1986 Chevy truck have fuel injection?
no it had a computer controled quadajet
