350z bad ecu symptoms

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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.

350z bad ecu symptoms

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. MAF was connected. I , by accident wile playing around with it, once disconnected the negative of the batter, but the engine ran, it was running off the alternator. And once wile boosting it, i got the engine to run, no problem, but wile disconnecting the wires, i accidentally shorted positive and negative wile still connected to the z. So, my engine is throwing codes, MAF sensor, and intake temp sensor, which is in the same housing if i'm correct. So i bought a new one, had it installed, cleared the codes, and it threw the same code with the same engine problems. View Public Profile. Find More Posts by chodalak.

The service tech never gave any specifics, I think he just determined there was an ECU problem and decided the best way to fix it was to replace it with a new one, 350z bad ecu symptoms. Help with Convertible Top. It had something to do with excess vibration and the TB.

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.

Log in. Sign up. JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding. I just bought my first BMW about 2 months back and so far I've loved it. I took it for an emissions test a few days ago, and it failed. The OBD sensor they hooked up to it kept returning the message "unable to connect".

350z bad ecu symptoms

The transmission is arguably one of the most important components of your car. One example of this is the transmission control module TCM. So, what are some of the bad transmission control module symptoms, and how much does it cost to repair? We answer those questions in this guide.

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Also i hope the guy has a same model number of UCU as mine! Mitsubishi Toyota Chevrolet Plymouth. So i bought a new one, had it installed, cleared the codes, and it threw the same code with the same engine problems. Visit TurboS13Hatch's homepage! There are many reasons your Check Engine light can turn on. You need the same trans type ecu and the same model range. If the ECU went bad on the 5. Originally Posted by bmccann Email Address. The ECM controls a number of systems, but the most important ones for our purposes are the air to fuel ratio, the engine timing. Yeah, NATS would have to be no-start fault, and would throw a code. Find More Posts by tony A failing battery can also cause ECM failure. This is an older thread, you may not receive a response, and could be reviving an old thread.

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These range from emissions problems to faulty O2 sensors to problems with the ECM. Helping a customer to trouble shoot a VQ swapped Spec V.. Find More Posts by bmccann Originally Posted by chodalak. Mobil 1 0W40 is some good stuff. Kasen 10 Replies. Likes: Mitsubishi Toyota Chevrolet Plymouth. Received 65 Likes on 56 Posts. All times are GMT MAF was connected.