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, 350z bad ecu symptoms, 350z bad ecu symptoms 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.

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350z bad ecu symptoms

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 Of course I was freaked out, first thing I thought was the ECU finally made up it's mind to take a dump because of the exhaust mods I added. I then shut the car off sat there for a few minutes and started it up again. Started right up idled fine but SEL was still on. I call my service guy and give him the details, wants me to bring in the next day. Next day: So they run a code check and find out it has something to do with the throttle actuator. After further probing they find that the ECU is bad causing it to pull voltage from the throttle actuator which in turn causes the ECU to go into safe mode. 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. They also looked to see if they're were any TSB and none come up.

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. Log in. VO in for results.

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. SES light was there from day 1 i bought it. Sort by Oldest first Oldest first Newest first Most reactions. As far as the rest of the problem, I know no one who has gone FI on a Z and has not had problems. You bought a used car with a turbo, the SES light has been on since you bought it, :wtf: who in their right mind buys a car with a constant SES light on anyway, especially one that has been modified to FI? There is an infinite range of things that could lead to your symptoms and I'm pretty sure you are not going to get the answer on a forum. And not ragging or anything but your post is so rambling that it is almost impossible to follow.

350z bad ecu symptoms

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 Of course I was freaked out, first thing I thought was the ECU finally made up it's mind to take a dump because of the exhaust mods I added. I then shut the car off sat there for a few minutes and started it up again. Started right up idled fine but SEL was still on. I call my service guy and give him the details, wants me to bring in the next day. Next day: So they run a code check and find out it has something to do with the throttle actuator.

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Log in. Driving along in the rain and the car just died. The whole issue is really perplexing, like I said, I just hope it's an isolated incident considering all the quirks the Z has had since it's debut. I then shut the car off sat there for a few minutes and started it up again. Do u have a scan tool?? JavaScript is disabled. Sooo my car is really stressing me out, and i would really.. Sorry you had an issue but it's nice to hear the dealership is responding favorably. I win :clap: I'm not sure the extent of the service managers search, but he said they looked to see if there was any history of anyone else having this problem and it came up negative. MAF was connected. Likes: 3, Originally Posted by bmccann I'm hoping it's an isolated incident but time will tell.

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

Did you trouble shoot your wiring? 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. Related Posts. Yeah, NATS would have to be no-start fault, and would throw a code. Log in. Bad transmission bearing? Send a private message to TurboS13Hatch. It had something to do with excess vibration and the TB. Not sure if this is the same issue you are having though. AVS Forum. Full Name. Thread Tools. Received 9 Likes on 9 Posts.