See full version: What causes no injector pulse Tips and Tricks
The idea of electronic fuel injection systems was developed to solve the old mechanical injection systems problems so relying on the reading of a different sensor feed into a control unit analyze this data and give back the exact amount of fuel needed to meet better engine performance and at the same time best fuel consumption, these modern EFI systems usually consist of some basic components such as fuel pump, fuel rail, fuel injector.
“So the problem could be: a blown injector fuse, a bad injector power relay or bad wiring harness” more
Hi There, I am R. Hasan Tito, a mechanic, and owner of this website. My friend and I created this website to share our knowledge, expertise, and experience with our fellow mechanics' community and car users. I am a specialist and certified automotive mechanic (Both Heavy Commercial and Private Cars). I have been working as a mechanic for over fifteen years. I worked for a long time at Global Rebound Automotive companies (Toyota, TATA, BMW, Nissan, TVs, and Others ) as a Mechanic and Mechanics Supervisor.
Hello!
We bought a freelander 2009 and before it’s left the forecourt they’ve got someone working on the ECU. Apparently it’s not talking to the gearbox … but ECU gearbox is fine.
If they manage to rectify it should we accept the car or leave well clear …
Any opinions most welcome. Thanks! here
The ECU has seals around it which are supposed to prevent moisture from entering inside. However, after a number of years, these seals tend to become worn out. If the seals become too worn, it will be easier for moisture to pass through them and enter the ECU.
However, what you may wonder about is why the ECU malfunctioned in the first place. There are lots of internal causes which could contribute toward this. Below are the top 5 causes of a bad ECU. Investigate them as soon as you notice problems with the ECU.
This helps a great deal with calculating the proper amount of air and fuel needed for the internal combustion process. That way, better fuel efficiency can be achieved.
Perhaps it needs time to learn and adjust engine parameters. Did it throw another code? here
You can test for overheating while the car still runs. Idle the engine for 30 minutes, and then tap the module with a screwdriver. The car may stall, which would strongly suggest that ignition control module may be the cause of the overheating you're experiencing.
The module resembles a small electrical box with a wire harness. It is usually located on or in the distributor housing in domestic vehicles, and on the firewall or wheel-well in foreign vehicles.
The ignition module of your vehicle is the heart of your entire ignition system. Its two main roles are to create a spark strong enough to ignite the air/fuel mixture for combustion and to control the timing of the spark plugs by opening and closing the ignition coil ground circuit. The ignition module has a direct impact on the performance of the engine.
Like all automobile components, the ignition module will eventually deteriorate and break. However, you can anticipate and prepare for the failure. These tips will help you recognize the two most common symptoms of ignition module failure. more
It’s also possible the circuits may be critically damaged by overheating if the problem is not addressed after the first or second occurrence. If you cannot start the car, you need to test the ignition control module using a light timing tester to check the output of the module.
The most common sign of a short circuit is when a circuit breaker trips and causes the circuit to shut off. However, there are other conditions that can cause a circuit breaker to trip, such as power overloads, so it is important to determine why the breaker is tripping. If a circuit breaker continues to trip immediately after being reset, it is a strong indication that there is a wiring problem somewhere along the circuit or in one of the appliances connected to that circuit. [links]
Beginning in 1999, Electrical Codes began requiring a new type of protection against arcing—the sparking that occurs when electricity jumps between metal contacts, such as may happen when a wire connection is loose but not fully separated. You can think of an AFCI as a device that anticipates short circuits and shuts off the power before it can reach the short circuit condition. Unlike GFCIs, which are designed to protect against shock, AFCIs are most useful for preventing fires caused by arcing. AFCI protection can be provided both by AFCI circuit breakers or AFCI receptacles.
In general terms, a short circuit is any condition where the establish wiring circuit is interrupted by a flaw in the wiring or wiring connections. Actually, though, there are two situations that both qualify as short circuits, although they carry different names. [links]
There are several causes for short circuits, including three that are most often to blame. [links]
Beginning in 1971, Electrical Codes began requiring ground-fault protection, either through special GFCI circuit breakers or GFCI outlet receptacles. These devices provide a similar function to circuit breakers, in that they sense changes in current flow, but they are much more sensitive than circuit breakers and shut off the flow of current when they sense very minute fluctuations in current. GFCIs are most valuable in protecting against shocks that can occur in ground-fault type short circuits. here
When an appliance is plugged into a wall outlet, its wiring effectively becomes an extension of the circuit, and any problems in the appliance wiring become circuit problems. Old or broken appliances can develop inner short circuits over time. Short circuits in appliances can occur in the plugs, in the power cords, or inside the device itself. It’s best to have a technician look at shorts in larger appliances such as ovens and dishwashers. Smaller appliances such as lamps often can be rewired yourself. [links]