Here’s an update since I know some other people have had this issue:

Problem is a "hesitation"- more like a surging forward and back- while holding the throttle steady 3K-4K RPMs. Only when it’s hot outside.

I’ve been to the dealer repeatedly now, and nothing has been accomplished.

What has been done so far:

1. Reprogrammed ECU
2. Replace Throttle Position Sensor
3. Reprogrammed ECU again
4. They have a brand new ECU in the mail, they’re going to replace the entire unit.

I did do an interesting test with the mechanic- he hooked up a computer under my steering wheel and took readouts while hesitating on the highway. Here’s what came out of it:

With RPM’s generally steady, computer read "throttle closed" intermittently and adjusted the timing accordingly. So, at about 73 MPH and 4K RPM in third, my ECU was retarding the timing from something like 68 degrees all the way back to one. Because it thought I was off the throttle.

(Did this test BEFORE replacing the throttle position sensor.)

I’m just reporting this info back so hopefully others can avoid the dozen or so trips I’ve made to the dealer now.

I’m thinking about going lemon law if this next fix (#4) doesn’t do it…. Anyone know how difficult this will be?

I’m getting pretty ****ed, as I now have a y-pipe sitting next to me waiting for this isssue to be fixed…

 

Here’s an update since I know some other people have had this issue:

Problem is a "hesitation"- more like a surging forward and back- while holding the throttle steady 3K-4K RPMs. Only when it’s hot outside.

I’ve been to the dealer repeatedly now, and nothing has been accomplished.

What has been done so far:

1. Reprogrammed ECU
2. Replace Throttle Position Sensor
3. Reprogrammed ECU again
4. They have a brand new ECU in the mail, they’re going to replace the entire unit.

I did do an interesting test with the mechanic- he hooked up a computer under my steering wheel and took readouts while hesitating on the highway. Here’s what came out of it:

With RPM’s generally steady, computer read "throttle closed" intermittently and adjusted the timing accordingly. So, at about 73 MPH and 4K RPM in third, my ECU was retarding the timing from something like 68 degrees all the way back to one. Because it thought I was off the throttle.

(Did this test BEFORE replacing the throttle position sensor.)

I’m just reporting this info back so hopefully others can avoid the dozen or so trips I’ve made to the dealer now.

I’m thinking about going lemon law if this next fix (#4) doesn’t do it…. Anyone know how difficult this will be?

I’m getting pretty ****ed, as I now have a y-pipe sitting next to me waiting for this isssue to be fixed…

 

Sorry to hear that your having all these issues. My car definately had this hesitation problem as well. At low RPMs it felt like a rodeo trying to drive. My Service Engine Soon light came on and I got tired of resetting the Ecu via unplugging the battery becuz the light would eventually come back. Took her to the dealer yesterday and they said that they reprogrammed the ECU with the latest program that Nissan sent to them. Sorry but I don't know which program this is. Might be the TSB thing. Immediately after leaving Nissan I felt the difference! It feels so smooth now and more responsive. It might just be me (which I doubt) but the cars seems to pull stronger. Hopefully they can fix ur ride as well.

As far as lemon laws go, I'm not too sure but I think if they can't fix a specific problem 3-4 times then I think you got them. Anyone else know more about this??

 

depends on the state.... but I think thats the way it is for MD at least....