What causes a 2kd D4D hiace to lose power and eventually cut of.on diagnostic machine its coming as EDU malfunction

If you have a 1985 Cadillac Seville with a 4.1-liter engine and are experiencing an issue where one injector is losing power after the car warms up, and a second injector follows, there can be several potential causes for this problem. This issue may result in poor engine performance. Here are some common reasons why this could happen:

1. Injector Clogging: Over time, fuel injectors can become clogged with dirt, debris, or deposits from low-quality fuel. If the first injector is losing power due to clogging, the second injector may eventually follow suit.
2. Fuel Pressure Issues: If the fuel pressure in the fuel system is not consistent or within the specified range, it can affect the performance of the injectors. A drop in fuel pressure can lead to a loss of power in individual injectors.
3. Electrical Issues: Problems with the electrical connections to the injectors, such as loose or corroded connectors, damaged wires, or faulty sensors, can disrupt the power supply to the injectors.
4. ECU (Engine Control Unit) Issues: The ECU controls the injectors' operation, and a malfunctioning ECU can lead to problems with injector operation.
5. Temperature-Related Issues: The fact that the issue occurs after the engine warms up suggests a temperature-related problem. It's possible that there's a heat-related issue affecting the injectors or their electrical connections. This could be related to poor wiring insulation, which may degrade when hot.
6. Vacuum Leaks: Vacuum leaks in the intake manifold can disrupt the air-fuel mixture and affect injector performance. These leaks may become more pronounced as the engine warms up.
7. Fuel Quality: Ensure that you are using good-quality fuel, as poor-quality or contaminated fuel can lead to injector issues.
8. Throttle Position Sensor (TPS) Issues: Problems with the TPS can affect the air-fuel mixture and injector performance.

To diagnose and resolve this issue, you may need to perform a series of tests and inspections, including checking for fuel pressure, inspecting the injectors, testing the electrical connections and wiring, and examining the ECU for error codes. It may be beneficial to consult with a qualified mechanic or technician who can perform a thorough diagnostic and identify the root cause of the problem. They can use tools and diagnostic equipment to pinpoint the issue and recommend the necessary repairs or replacements.

Check the ideas in the link.

https://www.google.com/search?q=2005+Toyota+Hilux+no+power+to+the+injectors

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Appearing in November"2001, the 2KD-FTV is the 2nd generation of the KD series of engine with a smaller 2.5 L (2,494 cc) displacement and went on sale in the UK market in the 2002 Toyota HiAce
so is HIACE and a secret>? name of car and year both a secret>
Diesel engine,
engine stalls may be lost of diesel fuel pressure to the injectors.
check pressure yet?

no HIACE here USA.
so no manuals to quote spec to you.
get the service manual for your truck and do the tests there.
for stalls.

hi, you should look at the charger if it's ok if the wire is not broken

Are there more symptoms or diagnostic information? Any warning lights that may have been on before the failure? There are a few things that will cause your engine to shut down suddenly. A bad timing belt, blown fuse, shorted wiring, internal transmission problem and defective ECU or related component. You may want to send it in for diagnostics but let me know if there is anything else. Good Luck.

No, a knock is a piston or internal part hitting another part. Take your auto to a repair shop.

ck for fuel leaks and ck the fuel filter , and the fuel pressure at the mainifold could be a bad pump same symptons filters are know for this issue,

It could be the reluctor ring on the crank shaft.

Hi Robert I have the same problem with a 05 hiace d4d Did you get yours sorted?

Nigel