I just bought a 2014 7AT AWD coupe. I test drove it thoroughly, everything seemed fine until today, I was driving it somewhat sedately, and when I went full throttle in it, crickets. I mean literally, the car was out to lunch. I was going about 38 mph and I would guess that the trans was in gear 5. It took about 5 full seconds before it went to, I guess about gear 3, which was still a WAYYYY too tall gear for 38 mph. The car was SLUGGISH! I rinsed and repeated, same thing. Putting it into DS helped a tiny bit, but not much. Manual mode was better, gear 2 was very peppy like I would expect.

I know people discuss "throttle lag" (with seemingly no known solution, just speculation) but this was also 7AT recalcitrance.

I know that the previous 5AT and this 7AT are shared with the Titan trucks. I have a 2007 Titan 4x4, and the 5AT in that truck is by far the best auto I have ever driven. It is seriously good. The DSG in my 2016 GTI is a close 2nd to the Titan's 5AT. Which leaves me confused why my new, "sporty" VQ37HR powered 7AT coupe would be such a pig compared to my 4x4 Titan? WTF gives?

It drove perfect on my test drive. And it drove like crap after I was being mellow with it. Did it go into some kind of "grandma mode" or some crap?

HELP!

 

Welcome to EPA compliance. Nissan programs the 7AT to get to the tallest gear it can and to hang onto it for as long as possible for fuel mileage. Get paddle shifters if you don't already have them and keep it in manual mode. That's what I do.

 

 

Thanks for the info, safe to say the car isn't malfunctioning?

I'm going to pull the steering column lower panel later to see if I have the 2 taped up paddle connectors, it's a 2014 Q60 AWD, I hope the connectors are already in there! Question about the paddles: if the car is in D or DS and I pull the downshift paddle, will it downshift, or does it need to be in manual mode prior? My GTI will go from D to manual just by tapping a paddle, I hope my new car will.

 

my '13 xS goes like a scalded ape, but i understand, because the X coupe i test drove before mine was SOOO laggy and weak.

try resetting ECU like mentioned above, and drive around like a maniac. might have been owned by a little old lady before you.

grounding kit didn't do anything for me, but i had no throttle lag. also had all the stuff needed except the wire, so i figured it couldn't hurt.

 

Yeah my coupe can go pretty good, for sure. When I test drove it I made sure the awd launch was a neck-snapper. When this happened, I immediately thought it had learned to be sluggish, which my GTI does also. But the ****-poor downshifting was alarming. Even when my GTI goes into "Corolla mode" a good prod on the accelerator wakes up the beast. Oddly, my 5AT Titan never becomes lethargic.

I checked the navigation in my coupe, previous owner home address was in their. I did a records check, the previous owner was a woman of 55-60 years of age, according to the free access I had.

Btw, everyone's approach to the ground upgrade is totally wrong. Firstly, Nissan's have a ground sensor, you should not be providing alternate ground paths around it.
Secondly, the only possible sensor signal degradation would occur in the ground paths between the ECU and the sensor. So, a ground wire upgrade between the ECU chassis and the engine block (or anywhere else a sensor derives ground return) would be sufficient to address any possible return path resistance, and avoid ground sensor issues. The ECU is generally it's own 5volt reference source for most sensors, so adding ground wires everywhere doesn't help.
I am definitely going to try the ECU reset. I personally have no intention of modifying grounds in my car, this is a software issue, not a hardware issue.
Car only has 29k miles.

 

Yeah agree with the grounding. It makes no sense to do it. My uncle who is an electrical engineer at a prominent space exploration company has tested all the wiring in the car for me. He said that adding any grounds would be a total waste of money. Also yes the ecu reset will absolutely speed up your car, and like bart said adding oem paddle shifters is an easy and somewhat affordable thing to do.

 

Can I use the paddles in D or DS ?

 

reset ecu or tune your car

 

Uprev good? I have uprev for my Titan

 

Yes, you can. I don't like the way revs hang after a down-shift because the ECU/TCU thinks you're "racing" and it keeps you closer to torque peak. After about five seconds, it upshifts. You could pull the upshift paddle, I suppose.

Manual mode works the best for me.

 

OK, great. I checked my car today, and I do have the taped up connectors for paddle shifters. Definitely gonna do this mod.

 

I didn't bypass the ground sensor, I was able to add an additional ground wire through it. In my case, it helped.

I wasn't aware that the paddle shifters would work in "D". Good to know! Now there's something else on my list to buy for my Q60x!!!

 

yes, good for when you see a cop and downshift to slow down a little ... without being obvious and lighting up the brake lights.

 

Don't do that with a Meisterschaft exhaust!