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.

Log in. Sign up. JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding. As I made my way onto the off ramp my Z suddenly lost all throttle response, SEL came on slip light came on, and no matter how much gas I gave it, the rpm's never made it above

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.

It had something to do with excess vibration and the TB. Now the wait begins to see if it is a fluke that I was lucky enough to experience. Formula 1 Follies.

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.

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. Knowing these symptoms can help you pinpoint the root cause of the problem so you can get your vehicle back up and running. If a solenoid or actuator circuit in your vehicle shorts out or has another issue that compromises its performance, your first sign may be the failure of your PCM. Typically, during diagnostics testing a trouble code will help pinpoint if the PCM is faulty.

350z bad ecu symptoms

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.

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Also i hope the guy has a same model number of UCU as mine! So, my engine is throwing codes, MAF sensor, and intake temp sensor, which is in the same housing if i'm correct. Solo Auto Electronics. I call my service guy and give him the details, wants me to bring in the next day. Started right up idled fine but SEL was still on. Looks like we roll this weekend :shiftdrive: So Find More Posts by VO Come join the discussion about performance, modifications, troubleshooting, exhaust, turbos, maintenance, and more! Find More Posts by chodalak. There were no questions at all from him just complete cooperation. Likes: Received 7 Likes on 6 Posts. If you already have a mechanic you trust, take their advice.

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All times are GMT Check with your mechanic to be sure, but replacing your ECM will usually solve these problems. I hoping to take some before and after pictures since I plan on doing a slight drop on the car sometime next week. They will flash the ecu with the rom for your exact VIN number. As I made my way onto the off ramp my Z suddenly lost all throttle response, SEL came on slip light came on, and no matter how much gas I gave it, the rpm's never made it above Wasnt the ECU, it was the wiring on the harness was a little loose causing a bad connection.. Of course, there are other reasons a car may not start, including a bad starter or a blown alternator. Do u have a scan tool?? I am upt o 12K and it never happened again knock on wood. Log in. That is why it is so important to recognize the symptoms of ECM failure. This can be advantageous since you can determine the exact cause of failure. So i was fixing it up and i have to boost the battery, the engine ran fine after crash, and only ran without filter. If the ECU went bad on the 5.