Infiniti q45 hard shift 1994 please help, mechanically impai

[Jcesar_lopes]

Already did that thanks anyway the answer was ok

[maxnix]

So, no difference between your ATF and new ATF on the same white paper towel?

Throw the Lucas crap away. Seriously. Now!

[Jcesar_lopes]

Throw the Lucas crap away. Seriously. Now!

Why?

[maxnix]

Because it is crap! Add nothing but Red Guard Lube to clean M1 ATF.

You need to buckle down for about a week and read the previous posts on here. Start with all by Q45tech. His early posts especially address transmission functioning.

You also may need to change your external ATF filter and check your lines. If all that fails, has the pan been dropped and the filter screen and O ring replaced?

[qship96]

The stain is very light pink

all the girls say that.

[OwnerCS]

Here's a link to the LG Red product description below.. I had some good luck with their product removing transmission chatter and shudder.

¡Elimina estremecimiento de transmisión hoy!

http://www.lubegard.com/C-112/LUBEGARD+ ... Protectant

[Jcesar_lopes]

Because it is crap! Add nothing but Red Guard Lube to clean M1 ATF.

You need to buckle down for about a week and read the previous posts on here. Start with all by Q45tech. His early posts especially address transmission functioning.

You also may need to change your external ATF filter and check your lines. If all that fails, has the pan been dropped and the filter screen and O ring replaced?

Thanks they say the atf was change recently so for now y just dump the Red Guard and later a full trans checkup? do you think is a good strategy

[maxnix]

You need to buckle down for about a week and read the previous posts on here. Start with all by Q45tech. His early posts especially address transmission functioning.

You also may need to change your external ATF filter and check your lines. If all that fails, has the pan been dropped and the filter screen and O ring replaced?

Thanks they say the atf was change recently so for now y just dump the Red Guard and later a full trans checkup? do you think is a good strategy

What does "the atf was change recently" mean precisely? You don't know, so you can't answer my questions in the quotation above.

You need to be less lazy looking for a solution in a can and discover what has been done, when it was done, and how it was done. You need to learn how the transmission works and the system functions.

If you are unwilling, you need to seek expert help from a knowledgeable technician in your area. There is on magic switch.

[qship96]

A BIG clue {IF TRUE ? } is the original owner SAID that the rough shifts BEGAN AFTER the transmission fluid was changed ........if true, MAYBE the wrong fluid was used????? Personally, I think he pulled one over on you and was noticing the transmission was performing badly THEN he got it serviced in HOPE of curing it, and when that did not work, he put the car up for sale instead of spending big dollars to properly rebuild transmission.

NOT many people bring in a correctly operating transmission, get the fluid changed, and then have transmission shifting issues


CAVEAT EMPTOR

[Jcesar_lopes]

What does "the atf was change recently" mean precisely? You don't know, so you can't answer my questions in the quotation above.

You need to be less lazy looking for a solution in a can and discover what has been done, when it was done, and how it was done. You need to learn how the transmission works and the system functions.

If you are unwilling, you need to seek expert help from a knowledgeable technician in your area. There is on magic switch.[/quote]


You are wright, Red Guard dint work, no magic in a bottle, will go to a professional, the hard shifting is a nuisance... can´t blame me for trying quick fix but am Learning and hope the problem wont brake the trans before i get it fix, I just paid 1,000 for the car still own 3000, but if trans problem doesn't go away maybe the doctor will have his car back or I will use 500 from the price to get it fix...

anyway the shifting is as follows the car stars very smooth but the first change is like a jump forward and the next too, it depends on how fast am going the faster the more, if going slow very subtle .

[maxnix]

You still are not answering the questions we are asking, so we cannot help you. At 144K miles, you should budget installing a Nissan rebuilt transmission with the appropriate auxiliary cooler and new external ATF filter.

[Jcesar_lopes]

You still are not answering the questions we are asking, so we cannot help you. At 144K miles, you should budget installing a Nissan rebuilt transmission with the appropriate auxiliary cooler and new external ATF filter.

Hey a little patience please I love the car and have to decide if I´m keep in it.

Que answers : Self diagnose said ok, ATF is very light pink, about what was done to it, for now only know they change the oil, dropping the pan,

Very newbie here please some understanding, also I took it to a guy he was pretty much like you since he can´t say what was done to the car but Iam going to print the AT guide so see if he can help. I told him about the outside sensors to see if they can be calibrated but didn´t can they?? He did calibrate i Think the throttle sensor, lowering now the third is not that hard but the second sill kicks, he told me the At had too much pressure??

He also said something about changing the valve cap ? I dont know if he said tha name is where all the sensors are and the solenoids I think I have to study more

[Jcesar_lopes]

What is excessive creep?

[OwnerCS]

Transmission Creep - Car moving forward in drive or reverse at idle speed.

[maxnix]

You still are not answering the questions we are asking, so we cannot help you. At 144K miles, you should budget installing a Nissan rebuilt transmission with the appropriate auxiliary cooler and new external ATF filter.

Hey a little patience please I love the car and have to decide if I´m keep in it.

Que answers : Self diagnose said ok, ATF is very light pink, about what was done to it, for now only know they change the oil, dropping the pan,

Very newbie here please some understanding, also I took it to a guy he was pretty much like you since he can´t say what was done to the car but Iam going to print the AT guide so see if he can help. I told him about the outside sensors to see if they can be calibrated but didn´t can they?? He did calibrate i Think the throttle sensor, lowering now the third is not that hard but the second sill kicks, he told me the At had too much pressure??

He also said something about changing the valve cap ? I dont know if he said tha name is where all the sensors are and the solenoids I think I have to study more

So, what was on the pan? Did they change out the internal filter and O ring? New gasket? Almost impossible for the AT pump to generate too much pressure. I think this guy knows less than you and definitely does not know the transmission.

You need expert help. Where are you located? If you keep this car, you are going to have to learn much faster I am afraid.

[Jcesar_lopes]

Trying to learn fast , but it does seems like a pressure thing, he lowered the throttle thingy and it improve, I In Puerto Rico and I shouldn't expect too much of At maintenance most likely they drop the pan drained put new tf on it and close it.

[Jcesar_lopes]

The car sill looks awesome but if he cant fix the transmission prob is a refund he said he will change the valve cap?, still learning

[Jcesar_lopes]

The car sill looks awesome but if he cant fix the transmission prob is a refund he said he will change the valve cap?, still learning

[Jcesar_lopes]

The car sill looks awesome but if he cant fix the transmission prob is a refund he said he will change the valve cap?, still learning

[Infinitiguy19]

There is a Dropping Resistor on the right front shock tower near the battery. When unplugged (Defective?) that would cause shifts to firm up (Become harder? I don't know).

There is a pressure relief and regulator valves on the oil pump (Just like the engine oil pump) to make sure things are running smoothly. So I doubt too much pressure is the issue. I think that oil (Automatic Transmission Fluid: ATF) is going to places where its not supposed to go because the seals are bad. Just to prove a point you should ask a competent mechanic to follow the Transmission pressure test found in the service manual (Pages 86-87).

Make sure the Throttle Position Sensor (TPS) is set between .40-.50 (.44 according to Q45Tech).That should not be touched for any other reason other than installation! You must use a Nissan Consult or equivalent to set the TPS. Using a multimeter to set it using the resistance reading (OHMs) is very inaccurate.

The best thing you can do now is install a Magnefine (External-inline) filter to prevent anymore damage to the Automatic Transmission.

Was the transmission pan gasket and all the bolts replaced with OEM new one to prevent any leaks? How is the transmission fluid level?

Do you hear any sort of whining from the transmission?

[Jcesar_lopes]

Thanks a lot, define whining??

[maxnix]

Thanks a lot, define whining??

Turbine like sound that increases in frequency with increasing speed.

[Jcesar_lopes]

yes

[Jcesar_lopes]

more like a takakakakakaka in crescendo not loud

[Jcesar_lopes]

anyone out there??

[kevindanielk]

I just replaced the transmission on my Q last week, because I eventually totally lost the reverse gear after months of dealing with a slow-to-shift into reverse problem. I had the same hard 1-2 shift for a few years but it didn't really bother me that much. I'm sure it's was a sign of bad things to come.
I did find out one important fact, after I removed my transmission and was stripping off all the electrical sensors;
Remove the two #10 bolts from the turbine sensor and pull it out all the way and look at the tip of it. If it has a lot of metal particles magnetized to it, you're looking at a transmission that's soon to fail. My old transmission had lots of metal filings in the pan and stuck on that turbine sensor. If the doctor guy is trying to pull one on you and had the transmission shop just clean up the pan of metal particles, maybe they did not know to pull the turbine sensor to clean it. That would give you a good idea about the trannys internal condition. Can't hurt to have a look see.

[maxnix]

Pulling the turbine speed sensor requires dropping the transmission. At that point, might as well be prepared to install a Nissan rebuilt one along with new external filter and auxiliary ATF cooler.

[Jcesar_lopes]

Changing the Valve body will help?

[qship96]

Pulling the turbine speed sensor requires dropping the transmission. At that point, might as well be prepared to install a Nissan rebuilt one along with new external filter and auxiliary ATF cooler.

NOT true, you can get to turbine sensor without dropping transmission- just one of the false statements made years ago on this forum by one person and repeated over and over by many members without questioning it.....same as exhaust does NOT need to be dropped to remove transmission, despite what you may read.

[maxnix]

Care to illustrate how?

In dropping the transmission, the exhaust is trivial to remove and gives much more room to work. No reason not to do it.