09 FX 50 Transmission

M

movado750

Member
I'm having some transmission issues. It will shift fine for awhile then it shifts hard and hesitates bad 3-4 and 6-7.

Any suggestions?

It has never been re flashed, and I've heard it can be done. I think I need to have it re built and be done with it.

Thanks

---------- Post added at 06:58 PM ---------- Previous post was at 06:56 PM ----------

Oh yeah it has 181K. one owner dealer service since day on. records show it started at about 161K. all service is up to date.
 
Didn't you just buy this a few weeks ago. If you bought it from a Dealer, I would get them to check it out, most places have at least a 30day warantee.
 
Last edited:
movado750 said:
I'm having some transmission issues. It will shift fine for awhile then it shifts hard and hesitates bad 3-4 and 6-7.

Any suggestions?

It has never been re flashed, and I've heard it can be done. I think I need to have it re built and be done with it.

Thanks

---------- Post added at 06:58 PM ---------- Previous post was at 06:56 PM ----------

Oh yeah it has 181K. one owner dealer service since day on. records show it started at about 161K. all service is up to date.
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If it has never been re-flashed then that may help. When I first got mine, it shifted like the transmission was shot, I don't even know how the previous owner drove it like that. I had it re-flashed and it helped a lot, still not perfect but it only acts up under stressful acceleration followed by hard braking, then hard acceleration again.
 
The reflash may help. Also check transmission fluid levels. Often hesitation or hard shifting is because of too much or too little fluid. Or can you even do that on an '09? I forget if they still have dipsticks. But fluid level is very important since fluid pressure is how the valve body controls shifts and fluid pressure is what controls torque converter lock as well as the actual shifts. Fluid expands when hot, so that may be why your car is shifting strangely when it warms up.
 
shadow191 said:
The reflash may help. Also check transmission fluid levels. Often hesitation or hard shifting is because of too much or too little fluid. Or can you even do that on an '09? I forget if they still have dipsticks. But fluid level is very important since fluid pressure is how the valve body controls shifts and fluid pressure is what controls torque converter lock as well as the actual shifts. Fluid expands when hot, so that may be why your car is shifting strangely when it warms up.
Click to expand...

Can't check fluid on the 2nd gen, it's a closed system.
 
a 2009 FX50 with almost 200k? damn. I would have run away from a 2009 with almost 200k miles on it....

anyway, bring it back to the dealer. If it's not an infiniti dealer, bring it to them, tell them what needs to be done, then take it to infiniti dealer and ask them to check it out, give the dealer you brought it from the bill.

the 7 speed in the 2nd gen is weird, always searching for a gear - in the fx50 you have lots of tq so sometimes it makes the ride jolty. The flash may help.
 
well it went into safe mode on my today. starts and runs fine but you give it gas and nothing. it was shifiting just fine for the last couple weeks.

---------- Post added at 11:19 AM ---------- Previous post was at 11:18 AM ----------

It is at the dealership now. dreading the phone call.
 
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