No more hair to pull out, Throttle response!!
01-23-2012, 07:39 AM
#101
I think the tail lights have been brought up before, and have been checked, but I think Tracker is on to something new to check for. I know that the ECU and the brake pedal are connected indirectly (as noted, the ECU power drain down proceedures requiring unplugging the battery and holding the brake pedal to drain all the capacitors) I'm wondering if there are any other circuits that could be causing the issue. I'd check around for anything that was not working electronically first. Once again, I can't imagine it has anything to do with the timing of the motor.
01-28-2012, 06:17 AM
#102
I still think it's a sensor that's "stuck" at a value that's acceptable to the ECU. However, since the value doesn't change, whatever it's controlling doesn't work like it should, and it's downhill from there. Turning the engine off resets the ECU, everything looks OK at first, then it repeats the process.
I'd look at the temperature sensor in the AT, since you already know it's not going into the lockup, which is a function of fluid temperature. Find out what the sensor outputs are supposed to be for different fluid temperatures, and make sure that's what it's putting out.
I'd look at the temperature sensor in the AT, since you already know it's not going into the lockup, which is a function of fluid temperature. Find out what the sensor outputs are supposed to be for different fluid temperatures, and make sure that's what it's putting out.
Speaking about the transmission, Is there any way to reset the TCM ?
I'll toss my exerience:
I had OEM tail lights and started running into an acceleration issue where the car always went into limp mode. I checked for leaks, replaced gaskets, then went off to the dealership. They found that the Tail light bulbs were bad... although they were working. Because of the change of resistance on the wire, ECU was going into limp mode. They almost charged me 350 dollars in labor for this, I got it covered for 100 under my extendewd warranty
-NissanTracker
I had OEM tail lights and started running into an acceleration issue where the car always went into limp mode. I checked for leaks, replaced gaskets, then went off to the dealership. They found that the Tail light bulbs were bad... although they were working. Because of the change of resistance on the wire, ECU was going into limp mode. They almost charged me 350 dollars in labor for this, I got it covered for 100 under my extendewd warranty
-NissanTracker
I don't think that brake override is my problem since i can use the cruise control. I tied ECU pin 101 to ground, Removed the tail light fuse, unplugged the brake light switch before with no change. I also drove the car with brake light switch unplugged from the brake pedal ( Brake lights always ON ), And didn't notice any difference !!!!!!
I may be getting cipher soon to do some logging, I will also be able to tell if the ECU is detecting the brake as applied or no .
I think the tail lights have been brought up before, and have been checked, but I think Tracker is on to something new to check for. I know that the ECU and the brake pedal are connected indirectly (as noted, the ECU power drain down proceedures requiring unplugging the battery and holding the brake pedal to drain all the capacitors) I'm wondering if there are any other circuits that could be causing the issue. I'd check around for anything that was not working electronically first. Once again, I can't imagine it has anything to do with the timing of the motor.
Thread
Thread Starter
Forum
Replies
Last Post
Colombo
Forced Induction
35
11-09-2020 10:27 AM
