Infiniti q45 hard shift 1994 please help, mechanically impai

[Jcesar_lopes]

I have a 1994 q45 I bought last week . Last owner was a doctor is well well maintain, the transmission is shifting hard 1st and second, I am really a newbie and mechanically impaired have just paid the man 1000 owning 2000 he loves the car and tells me its started to happening after a transmission oil change, explain iy to me like a child also not a native English speaker Spanish someone?

[qship96]

Wonder why he sold such a well maintained, great operating vehicle?

[Jcesar_lopes]

Not the case, I could ask my money back tomorrow, very rich guy

[Infinitiguy19]

Does he have the service history from any Infiniti dealers or trusted shops to back up his claims? If so every when was the transmission fluid changed?

The 1994 Q45 transmissions should last a good amount of time as the engine produces slightly less power, The gearing is slightly slower, they have in-line filters along with the internal pan screen and Infiniti used better materials when they built the transmission (glues..).

[Jcesar_lopes]

The mechanic told him it will go away as the viscosity of the trans fluid improves

[Jcesar_lopes]

Does he have the service history from any Infiniti dealers or trusted shops to back up his claims? If so every when was the transmission fluid changed?

The 1994 Q45 transmissions should last a good amount of time as the engine produces slightly less power, The gearing is slightly slower, they have in-line filters along with the internal pan screen and Infiniti used better materials when they built the transmission (glues..).

Yes, I have the history , but still Im in Puerto Rico and here they think that the transmission fluid shouldn't be change the first gear is really hard any suggestions??

[Infinitiguy19]

What machine did the "Mechanic" use to "flush" the transmission?

[Jcesar_lopes]

I bought Lucas Automatic Transmission conditioner should I use it?

[Jcesar_lopes]

What machine did the "Mechanic" use to "flush" the transmission?

I will find out tomorrow, probably manually?

[Jcesar_lopes]

Thanks for replaying 19, the owner is confident it will wear off as tow different mech told him the same Im not sure is really hard the shifting

[Jcesar_lopes]

Anyone??

[qship96]

Not the case, I could ask my money back tomorrow, very rich guy

How do you think he became "a very rich guy" ? ..........by making smart financial decisions when faced with facts?

PS the new transmission fluid DOES NOT "take time" change viscosity to "improve shifts"


You are in for quite a ride if you continue to make decisions without becoming educated before making those decisions.

[maxnix]

The mechanic told him it will go away as the viscosity of the trans fluid improves

Pray tell how that will occur? Did they add in sawdust?

[maxnix]

I bought Lucas Automatic Transmission conditioner should I use it?

Hell no! Only 6 oz. or less of LubeGuard Red with completely new fluid. Not just a drain and refill.

[Infinitiguy19]

Just for the hell of it perform the A/T Check process found in the service manual. Page 41 of the 1994 Infiniti Q45 service manual:

http://www.nicoclub.com/FSM/Q45/1994_Q45/at.pdf

[Jcesar_lopes]

OK

[Jcesar_lopes]

[quote="Infinitiguy19"]Just for the hell of it perform the A/T Check process found in the service manual. Page 41 of the 1994 Infiniti Q45 service manual:

The result was ok

[Jcesar_lopes]

Not the case, I could ask my money back tomorrow, very rich guy

How do you think he became "a very rich guy" ? ..........by making smart financial decisions when faced with facts?

PS the new transmission fluid DOES NOT "take time" change viscosity to "improve shifts"


You are in for quite a ride if you continue to make decisions without becoming educated before making those decisions.

That´s why Im here

[Jcesar_lopes]

What now?

[Infinitiguy19]

Well all the electrical parts of the transmission check out. But more testing may be required or the problem is mechanical which is more likely.

[maxnix]

What now?

Still waiting for a detailed maintenance history. Report on condition of ATF via the white paper towel test.

[Jcesar_lopes]

you mean color?

[Infinitiguy19]

Color and smell (Burnt,...).

[goody90q45]

Brian is trying to verify the the ATF is clean. Wipe the dipstick on a white towel and compare the ATF to new ATF. If it looks worst than new it's time for a few drain and fills using $10 gallon Walmart ATF. I had hard shifting in my 94Q and Lucas Transmission treatment and Lubeguard both worked well in cleaning up varnishes the transmission internals and improved the 1-2 gear shift.

Do run the self-diagnostic as suggested. It's simple to do (sitting in the driver seat in your driveway) and may lead you to a bad sensor. Check out the Transmission section of the FSM (AT) for the self-diagnostic procedure. Has the TRANSMISSION MALFUNCTION warning come on in the Odometer display?

Finally, I'd ohm test the external mounted sensors on the transmission. There's 4 of them and they're easy to test. The turbine revolution sensor could be your culprit. You'll find the instructions for ohm testing in the AT section also.

Good luck.

http://www.nicoclub.com/FSM/Q45/1994_Q45/

[Jcesar_lopes]

very light pink

[Jcesar_lopes]

Brian is trying to verify the the ATF is clean. Wipe the dipstick on a white towel and compare the ATF to new ATF. If it looks worst than new it's time for a few drain and fills using $10 gallon Walmart ATF. I had hard shifting in my 94Q and Lucas Transmission treatment and Lubeguard both worked well in cleaning up varnishes the transmission internals and improved the 1-2 gear shift.

Please tell me exactly how to do this if is not much trouble I already have the Lucas Transmission treatment but the idea of just send it in without some process seem not quite the solution, supposedly it had a atf not long ago change of a i dont know the word in English Spanish "junta" like the one between 2 cranks

[OwnerCS]

¡Bienvenido a NICO!

¿Cuántos kilómetros o millas tiene?

[Jcesar_lopes]

Brian is trying to verify the the ATF is clean. Wipe the dipstick on a white towel and compare the ATF to new ATF. If it looks worst than new it's time for a few drain and fills using $10 gallon Walmart ATF. I had hard shifting in my 94Q and Lucas Transmission treatment and Lubeguard both worked well in cleaning up varnishes the transmission internals and improved the 1-2 gear shift.

Do run the self-diagnostic as suggested. It's simple to do (sitting in the driver seat in your driveway) and may lead you to a bad sensor. Check out the Transmission section of the FSM (AT) for the self-diagnostic procedure. Has the TRANSMISSION MALFUNCTION warning come on in the Odometer display?

Finally, I'd ohm test the external mounted sensors on the transmission. There's 4 of them and they're easy to test. The turbine revolution sensor could be your culprit. You'll find the instructions for ohm testing in the AT section also.

Good luck.


http://www.nicoclub.com/FSM/Q45/1994_Q45/

Please tell me exactly how to do this if is not much trouble I already have the Lucas Transmission treatment but the idea of just send it in without some process seem not quite the solution, supposedly it had a atf not long ago change of a i dont know the word in English Spanish "junta" like the one between 2 cranks

The stain is very light pink

The self-diagnostic was an OK

Finally, I'd ohm test the external mounted sensors on the transmission. There's 4 of them and they're easy to test. The turbine revolution sensor could be your culprit. You'll find the instructions for ohm testing in the AT section also.

page??

[Jcesar_lopes]

¡Bienvenido a NICO!

¿Cuántos kilómetros o millas tiene?

Hey español great! 154,000 gracias!

[OwnerCS]

1) Download http://www.nicoclub.com/FSM/Q45/1994_Q45/at.pdf (Auto Transmission PDF document).

2) See page 41 for trouble diagnostic without using a Nissan consult tool.