Hey guys,

I have had some troubles over the past month or so with my car hesitating to start. It happens on and off and is not consistent. I took it to the dealer a week ago and they changed the battery and said that could be the problem. Unfortunately I didn't have these videos at the time but below I was able to record what happens. Any thoughts on what the issue could be? I am taking it back to the dealer tomorrow.

2012 G37XS 60,000km

https://onedrive.live.com/redir?resi...t=folder%2cmp4

In the first video this occurred after driving the car for about 10 min and upon returning home it struggled to start. I had to hit the gas pedal to get it going.

Second video, happened this morning. Stepped on the brakes and attempted to start It. After a few times the brake pedal couldn’t go down and I had to hit the gas to get the car started.

Thanks for the help,

 

Hi andy
I have a 2011 G37 IPL having the same issue have taken to the dealer 6 times and replaced the battery
Did you ever figure out what the issue was with yours?

Thank you
Julie

 

Hey jewels28,

Taking the car to the dealership tomorrow again. I am hoping that the video clips can help them figure what is causing the problem. I will keep the thread posted on the outcome.

 

This also happened to me, very few times. I noticed that it only happens on warm restart. The car will start, the RPM rise up and than fall down and stall.
I can restart it and give it some gas and than it's fine.

 

^ This happened like 3 times to me too but it start back up with some gas...

Subscribed for further update

 

Have you ever cleaned your thottle bodies? If not, it is fairly simple and likely the culprit. Here's a link the DIY and discussion on this topic.

 

Does it only happen when it's -9°C?

 

Definitely dirty throttle bodies. My 2010 has done this a few times as well. I have Stillen Gen 3 intakes so it's not so simple. Going to clean them in the spring.

 

I have had this happen to my car a few times a year. I couldn't yet find any correlation to outside ambient temperature, cold or warm start, etc.

Maybe in the spring when the temperature in the underground garage is more tolerable I will have a look at those throttle bodies. Mine has 108000km so I'm sure they're not looking great...

 

In the first video it definitely seems like dirty throttle bodies. My '08 did that once- cleaned the TB's- never happened since.

Honestly, in the 2nd video, it really seems that the engine isn't turning over fast enough to fire. It seems sluggish to me. Either way, clean the TB's and hopefully this will resolve the problem.

 

Nope, haven't cleaned the throttle body? Is this something that is mainly done during a service at Infiniti?

Thanks

 

Nope, its pretty weird. It happens periodically. Cold, warm etc. Even after I drive the car for a long periods.

 

thanks for the tips.

I showed the clips to Infiniti this morning and the one Mechanic/Technician said "he never seen this problem before". I told him that I put the clips on this forum and they mentioned the throttle body and he said yeah that's something I can check. I think its time for me to go to another dealer.

 

Nope, it is not something they regularly recommend or even think about as far as I known. They're often reluctant to even consider this.

It is very DIY-able, most users here have done it themselves. Dealers seem to be reluctant to do this, or charge a lot. I did mine when my car was ~4 years old and had ~80,000 kms, it made a big difference. I'll be redoing it again this summer.

 

So I picked the car from the dealer and they said they couldn't replicate the issue. I am waiting to hear back today from the mechanic as he wasn't in the shop when I picked up the car last night. I am leaning towards they didn't do anything in terms of checking/cleaning the throttle body or fuel pump system etc.