Hey guys i own a 2005 g35 AT with 109000 miles. I just noticed yesterday that there is a heavy hesitation in the car at wot from dead stop from 3000 -4000 rpm.it does it twice in that short span and from there on it fine. The funny thing is it only does it in first gear and shift into the rest of the gear fine. I just changed the driver side cam sensor and spark plugs.
I did remove the tb but did the ecu reset and tb relearn. I did not mess around with tb butterfly, just took it off and sat it down. Can it be that my tranny is starting to fry. Im going to check tranny oil level later on today since its 116 right now outside,and see i can get a vid of the rpms thaks for the help.

 

I checked The oil with the engine fully warm and it shows the level between the first two notches nothing in the cross hatched area. From what ive read the notches are to check oil level when cold. So im low on tranny oil, can this be causing the hesitation? Shoud i just add oil or what do you guys reccomend i do?

 

Well im all out of ideas now car does it sometimes not all the. Any one had a similiar issue?

 

Define hesitation. I'm imagining several different things in terms of what you are describing. Do you mean you floor it and the car doesnt move like it has no power? Or does the trans slip

 

Well when at deas stop and floor it picks fine but once it hits like 3500 the rpm keep jumping forward all the way up 5000 until its shift. All the rest of the gears go up the rpm band fine. it only does it in first gear. dont know much about transmission im guessing it is slipping. I managed to get it on video but it hard to see it because of the movement im going to try to up load it.

 

i finally managed to upload the video. you can see how the rpms jump between 3k and 5k. what do you guyst think it is transs slipping?

 

Bump any help would be greatfulll

 

Can't watch while at work...gotta wait til i get home

 

Doesn't look like trans slip at all because the MPH increases with the rpm increase. Are you talking about the way the car lurches between 3-5k rpm?

 

yeah. it feels like when youre driving a manual and youre in gear and you let of the gas the jerkign motion but it only does it between those rpms. i tried catchign another vid it they all come out shaky thats the best i could do. i was thingking of doing and oil change to the tranny before it happend just a draing fill just because its a high milage. should i take it to a tranny shop and have someone check it out.

 

Following - mine does something similar, but not quite to that extent. Does it in multiple gears as well, usually between 3k and 5k.

 

Tried cleaning the crankshaft sensor??

 

i havent tried cleaning the sensor. ive come to the cloncusion that it cannot be the transmission because it was in fact a slip the rpms would shut up to 5 or 6k and mines seems to skip only. i fount a small tear in the intake hoses ima replace the couple with a new one and see if it cures it but highly doubt it. funny thing is that i dont have the chekc engine light or anything. defently something weird.

 

try and catch a video of it. mine only does in firt gear all other gear are fine even the shift from first to second is fine its just in that short badn of the rpms

 

Maybe the sxexcss grounding kit will help?