What controls the injector pulse?

What controls the injector pulse?

What controls the fuel injector pulse? – Quora. The ECU or Engine Control Unit. It is sometimes called the Black Box. I”m sure there are many other names but whatever you want to call it, it is the computer that controls when the injectors activate and when the spark plugs fire.

Will a bad injector cause no start?

Vehicle Won’t Start or Struggles When Starting If the fuel injector is not delivering enough fuel to the engine system, this can cause the car to struggle when trying to turn over or not turn over at all (just cranks with no result). This can also cause the engine to stall due to the air-fuel ratio not being correct.

How do you fix an injector malfunction?

The diagnosis process of the injector circuit malfunction can be either replacement of the fuel injector, repair or replacement of the connection issues repair or replacement of the wiring issues (like broken wires, frayed wires, cut wires, or shorted wires), and replacement of the powertrain control module.

How much does it cost to fix injector circuit malfunction?

Faulty injectors – This will cost between $1,000 and $1,500 if you take it to a shop. If you do the work yourself, it will cost you around $800-$1,000 for the injector parts. Bad wiring – This will cost from $100-$500.

How do you check a fuel injector circuit?

Part 1 of 2: Testing injector resistance

1. Material Needed.
2. Step 1: Make sure the key is off.
3. Step 2: Remove injector wiring harness.
4. Step 3: Set DVOM to measure ohms.
5. Step 4: Test resistance with DVOM.
6. Step 5: Repeat with all injectors.
7. Step 1: Turn the car on.
8. Step 2: Set up DVOM to measure DC voltage.

How many volts do I need to open my fuel injectors?

As a general rule Most electronic fuel injectors now operate at Battery voltage. For most production vehicles this is 12volts nominal (actually about 14V with the engine running). The actual time the injector is open is controlled through Pulse Width Modulation.

Can I use wd40 to clean fuel injectors?

Aim the injector nozzle into a GLASS jar. Spray to clean out the injector good. After you feel it’s clean enough, spray some kind of lube like WD 40 thru, so the carb cleaner doesn’t sit and destroy the internal seals inside.