For you guys that have had the TSB for hesitation done, how have you fared? Postively? Negatively? Also, how were your experiences with the dealers in getting this done?

I have to get my first oil change done this weekend and am looking for some feedback. Thanks!

 

I've been following the threads on this topic. I think everyone that's had it done, with only one exception I read about, was very pleased with the result. One person with a 2K3 had the flash done (even though his ECM numbers weren't applicable to the TSB) and he noticed no change.

 

When you say "his ECM numbers weren't applicable to the TSB", does Nissan know which cars are affected?

Sorry if this is a redundant topic - I've been a little out of the loop lately....

 

The TSB requires dealers to check the ECM part number and compare it to a table in the TSB. The TSB is only supposed to be applied to the appropriate part numbers (probably older parts).

 

The real question to most of us is, if we have lag, but not hesitation, does the TSB do anything for us? I was told I am not included in the TSB and I don't have hesitation, but do have lag, can I expect any benefit from this update?

 

Hmm.....older parts.... I have an '03SE with a build date of 6/02. Wonder if that qualifies...

Also, I must say that as far as terminology goes, I there is definitely a 'lag' when accelerating under 3500 RPM but I wouldn't say it's hesitating (like struggling or sputtering). Very strange issue, I must say.

 

I don't yet have the TSB, but from what I've read, throttle response time is supposed to be greatly improved. Also the engine is supposed to feel more "peppy" as if it has more low end horsepower or torque.

 

Do you mean actual "lag" or just that the car doesn't pull as hard as when it's beyond 3500? Cause I have a 5/02 build, and I have yet to experience any of these lag/hesitation issues spoken of (4 months of ownership).

The car's intake opens up more after 3500-4000rpms, so there's almost a thrust that you can feel (similar to turbo kicking in, but nowhere NEAR the power). If that's the case, then it's normal.

Sorry if I asked you a stupid question, but I'm just trying to clear up for myself what exactly is happening around here. Seems like everyone uses "lag" and "hesitation" to mean different things, so I'm kind of confused.

 

The hesitation feels like your driving a rough automatic car. Say your driving steady at 20mph and you just ease into the throttle. In an automatic, there is that brief pause and shutter caused by the torque converter unlocking and then the car goes. It's sort of like that. You don't have to stomp the gas, you need only step into it.

I have it, and Tom at Len Stoler Nissan in Owings Mills, Md. has ordered the parts for me. This is after I took the car to Tischer in Laurel, Md and they treated me like crap. Tom is the one who posted the TSB here and he has taken good care of me so far, thanks Tom. So if you live in Md, or southern Pa, take it to him.

 

Everytime I read up on this I get more and more confused. The way you describe, I have it and I think that this behavior has been described as lag. I thought hesitation was a different abnormality that is best described as a bucking when trying to get on the throttle. I know I don't have that. Maybe I'm just even more confused. When I had my wind deflector replaced, I asked them about this and they said they checked the ECM and the TSB didn't apply, but you never know if you can trust the dealers.

 

Your right it is very much like a bucking. When I say it's like an Autoimatic, I meant a rough automatic. So there is not only a delay in pickup but a slight buck involved as well. You would know if you had it, thats the best way I can put it. I've been complaining the Tischer since I bought the car in Jan of 2002.

 

It did amazing things for my performance!

 

Think I'm probably the guy referred to about flashing the 2k3 that wasn't included in the TSB. I don't know for sure that my ECU wasn't in the part range, just suspect my dealer didn't check.

Anyway, I didn't have the hesitation, so obviously feel no difference in that. The car feels a tad quicker, but the difference is definitely within the "could be imagining it" range.

Re throttle lag, at first it felt like there was no difference. Now though, it does seem a little better - one caveat though, we just had a cold front come through, and the lag is supposed to be better in cooler weather. Not sure it can ever completely go away, as part of it seems to be the engine shifting and drivetrain engaging (I usually get a "thump" along with it).

Anyway, I'll do some actual testing tomorrow and update.

UPDATE: Okay, after some specific driving today, the throttle lag does seem better. There's still the 1/4 second "thump", which feels like slack being taken up in the drivetrain (i.e. torque converter spinning up, engine shifting in mounts, drivetrain twist, etc.), but if I recall correctly there also used to be a lag before this started - it's now gone. Again the caveat though, it's cool out today and others have said this problem gets worse in the heat. As far as overall performance, the car was fast before and is fast now - feels a tiny bit quicker, but without some kind of actual evidence it's impossible for me to tell.

Anyway, bottom line is that the ECU flash seems to have been positive for my car, even without the throttle hesitaton problem.

 

I didn't notice any hesitation, yet I still took the car in. I had no problem getting the TSB done w/TSB printout on hand. The car feels totally different not, you floor it and it goes. Also I noticed that in 1st gear, at about 4000 tires start scrounging for traction (slight chirping).