350z bad ecu symptoms

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When conditions change, the ECM will automatically make adjustments in real-time. That is why it is so important to recognize the symptoms of ECM failure. The ECM controls a number of systems, but the most important ones for our purposes are the air to fuel ratio, the engine timing. It also controls the transmission in automatic transmission vehicles, and valve timing on vehicles with variable valve timing. This is superior to old, mechanical systems, where you had to adjust the carburetor from time to time or have the engine timing tuned. When an issue arises, the ECM will log an error code that lets you know the source of the problem. This can be advantageous since you can determine the exact cause of failure.

350z bad ecu symptoms

Thread Tools. Helping a customer to trouble shoot a VQ swapped Spec V.. I've never had a ECU go bad, but I think that's what we've narrowed it down to. Here's the symptoms and what we've tested: Car died suddenly at highway speed was raining heavily No spark at all Can smell fuel while cranking Fuel pump primes ECCS relay is working: - power at coils, injectors, MAF, crank and cam sensors All fuses check out No codes Replaced crank sensor with new one from Nissan The fact that he is getting 12 volts switched to all of the sensors, tells me that it's not the ECCS relay. The fact that the pump primes, and he smells fuel while cranking tells me that the injectors are working. No spark with good voltage and ground means that it pretty much has to be the ECU. Anyone else ever have a ECU go bad? View Public Profile. Send a private message to TurboS13Hatch. Visit TurboS13Hatch's homepage! View iTrader Profile. Sounds to me like electrical fault.

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Do you have questions? Trying to post in the Marketplace? Need help? Introducing Infinite Scroll - Click here to learn more! Thread Tools. Sooo my car is really stressing me out, and i would really.. So i was fixing it up and i have to boost the battery, the engine ran fine after crash, and only ran without filter.

Log in. Sign up. JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding. The gauge reads around PSI before the car is even started, and reads above the max of PSI when it is operating. Not sure, but I believe the gauge normally displayed 0 before the car was started. The car was purchased after being involved in mild accident. A slight collision to the rear side of the car by the door. The car has a cold air intake system, and straight pipe exhaust. These are the only upgrades from stock components.

350z bad ecu symptoms

View Cart Checkout. As the primary computer control for your vehicle, your powertrain control module PCM plays a vital role in ensuring that your engine and transmission work in tandem. When your PCM fails, it typically exhibits one or more different behaviors.

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It had something to do with excess vibration and the TB. The time now is PM. Please consider creating a new thread. Received 65 Likes on 56 Posts. Received Likes on Posts. Find More Posts by VO Send a private message to TurboS13Hatch. I think this is a freak incident since I couldn't find any ECU problems when doing a search but if anyone has any info about this I'd like to hear it. For a better experience, please enable JavaScript in your browser before proceeding. When an issue arises, the ECM will log an error code that lets you know the source of the problem. However, it only presents itself under hard driving very hard driving.

The transmission is arguably one of the most important components of your car.

Here are the four most common symptoms of a bad ECM computer:. Since the ECM controls your air to fuel ratio and transmission, a faulty unit can cause your gas mileage to drop through the floor. I then shut the car off sat there for a few minutes and started it up again. Email Address. No spark with good voltage and ground means that it pretty much has to be the ECU. All times are GMT Anyone else ever have a ECU go bad? Your ECM also has sensors on the radiator, the air filter, the vacuum pipe, the throttle body, the camshaft, and the crankshaft. Find More Posts by chodalak. Sign up. Find More Posts by nsnrider.