Z does not accelerate

nomodsjk

I had this same problem and it turned out to be a throttle positioning sensor was faulty. Unfortunately Nissan doesn't just sell the sensors you have to buy the whole throttle body which is 835 $each! I had to find a used one on eBay for 210 $. Good luck to you sir

7speed

Did this cause occasional jerky acceleration? I felt some hesitation/judder when I was accelerating today.

So at lunch I tried it out, I just took off normally in first (this is all under like 10mph) As I was rolling all of a sudden it felt like I pushed the clutch and jumped off it. (Because car stopped accelerating then accelerated, the tires did a quick chirp and vdc flashed)

__________________
09 370z 6spd traded 1/12/15 for 15 Challenger RT 6spd

7speed

Nvm , pulled a coil pack and have oil on it.

__________________
09 370z 6spd traded 1/12/15 for 15 Challenger RT 6spd

P's_Z

But i assume it is covered under warranty if ones warranty has not expired, right?

__________________
Zeta

P's_Z

This happened for the 2nd time now. So p!ssed!!! Cant believe a 2013 40k car(in PR) with only 10K is having issues already. Going to the stealership this week to see what BS they come up with. Sorry everyone, just blowing off some steam, im just really frickin p!ssed

__________________
Zeta

juld0zer

only risk i can see is if you use the cruise control - it wont know when you are braking so you might be fighting the cruise.

simple way to avoid this is to refrain from using cruise control, or if you must then remember to turn off the cruise when you brake/coast

Zoren 370

Can you post a picture of this switch next to the brake pedal? Thanks

juld0zer

sorry folks, either the LHD models have the sensors arranged differently or my memory has failed me.

i cant upload pics via this damn iphone but i'll point you to this thread: I have a serious engine problem

there are two pics in it. the switch i am talking about is the skinny black one which is on the RHS of the first pic. the chunky one is for the brake lights. dont disturb that one

juld0zer

ok so i just went outside to check my car. my memory didn't fail me.

RHD models will have the cruise control brake switch on the left, stop lamp switch on the right.
LHD models will have it the other way around.

either way, it is the black skinny one you're after.

P's_Z

Thanks for taking the time to post and explain juld0zer. I will go to the dealer first but im anticipating a lot of BS+they will not solve the problem. Ill throw them a bone and try to explain the possible causes to this issue from what ive gather on what everyone has said and see if that helps. If not, guess ill have to follow your advice or live with this problem. Kind of bummed right now, and a bit disappointed with nissan

__________________
Zeta

juld0zer

the brake switch could be the solution but keep your mind open to other possibilities as i know of a few other possible causes/solutions.

for me, i'm 95% sure it's brake switch related as i can induce the problem by simulating a depressed pedal.

keep us updated!

Kabestro

Hey P's Z, looks like you're not the only one, I've had this problem for quite some time. I thought it was the tune I had being too aggressive or dirty MAF sensors. Last thing I did was get an etune from uprev and changed to 93 octane gas. I haven't had the problem since. But it always happened to me in the mornings when I first started the car. Shut it off, turn it on again and it would go away. Let us know what the stealership says.

__________________
Stillen Gen 3 CAI / Fast Intentions HFC and CBE 12" Res. (#730) / Swift Springs / 20mm H&R Spacers / Clutch Helper Spring / UpRev Tune 322whp.

1slow370

theres nothing stuck in the airbox inlets or hoses like chunks of foam, garbage, plastic bags right? If you are going to the stealer to have the sensor looked at make sure it isn't something stupid or you will feel really bad later. also when checking for leaks don't forget to check the pcv and brake booster lines that go into the manifold. Save yourelf some time your code is for the passenger side, check the evap hose too. if you cant tell if it is leaking or not grab a needle nose pliers and pinch the hose in the middle to see if it make a difference.

__________________
ANSWER PRICE LIST
Answers - - - - - - - - - - - - - - - - $0.75
Answers (requiring thought) - - - - $1.25
Answers (correct) - - - - - - - - - - $12.50

P's_Z

Yes, i do find a leaf every now and then, but never think that the issue since its strange that i turn off the car, turn it on again and it works fine(unless the leaf gets out of the way of the airflow passage when i turn off the car and turn it on again) im definitely thinking of removing my z1 maf hoses and the airbox just to be sure. Ill definitely take your advice and check the lines, pcv and hoses... Thanks!

__________________
Zeta

P's_Z

Checked lines, pcv, evap hoses, all seems to be ok. Took off my maf hoses, put oem ones on. Will be going to the dealer in the next few weeks when i get some time off work.

__________________
Zeta