transmission Issues won't shift till 6000rpm.....

[tudeamouse]

HI ThereI have swapped the speed/revolution sensor and the transmission. I have heard that the car has a computer specifically for the transmission... is that called the ecu or ecm? Where is it located in the car. I can't find it in the chilton's. my car is a 92 240sx SE.

[vanquish2]

when it does shift....does it shift hard???

have you check the filter and fluid?

[vanquish2]

I might have that transmission ecu still iin my car...if you need

[tudeamouse]

Hey KevinIt shifts at exactly 6oooRPM and shifts very hard. I have replaced the revolution sensor and the entire transmission and it is still doing the same thing.Thanks Jess603-948-2105

[tudeamouse]

Kevin How much would you be looking for it and where are you located? I live in NH next question where is it located in the car? My husband and I have searched the chilton's and can't find the info in the manual anywhere?Last question The 89 - 93 will work in my car correct?Thanks Jess

[vanquish2]

Kevin How much would you be looking for it and where are you located? I live in NH next question where is it located in the car? My husband and I have searched the chilton's and can't find the info in the manual anywhere?Last question The 89 - 93 will work in my car correct?Thanks Jess

I believe it is directly above the engine ecu, but I'll check. I believe that the 89 would not work....I would say for sure that the 91-92 would but I'm really not sure about the 90....call nissan and get part numbers for both and see if they are the same. I don't have a lot of experience with the autos on these cars.....I'll see what I have....mine is a 92 and was an auto. I live in Indy

[tudeamouse]

So how much are you looking for it?

[tudeamouse]

HEy there Haven't heard back from you Kevin, hope all is wellThanksJess

[vanquish2]

Sorry, will get back to you next week.....I need to make sure I still have it.....Big show this weekend I'm getting ready for....sorry for the delay

[tudeamouse]

Hey there thats fine. I found out it is not the ECU it self. There us a cintroller box located above the ECU and that is what I need. Let me know if you have that!!Thanks so much, sorry about being a pain!

[vanquish2]

Above the engine ecu???

[Valett85]

so im having the same issue. how do u know its the controller u need? and not the trany computer?

[Valett85]

check out my post on here. a guy posted a way to cure the problem. i didnt try it though. i figured mine out before i saw his post. my problem was the throttle position sencer. the plug was full of water. let it dry out and wa la.

[the technican]

The TCM is located inside car either on passanger side kick panel under dash or on the floor on the hump under radio. if it shifts like a car that has a shift kit in it, shifts real hard into every gear it sounds like the transmission is running at maximum line pressure it could be caused by a bad or possibly unpluged line pressure resistor. its located under hood by the air intake box where the air filter goes. it should be mounted either to the side of strut tower or on finder side. it will look like a small box about the size of a piece of stick gum with 2 wires going into a connector. there is a spec for it using an ohm meter you may be able to find on chilton or online but odds are if you test it will read open. well good luck hope this helps

[the technican]

the throttle position sensor is a real good posability. the post on here was good info even if you dont find it full of water it is worth checking, green build up in the connector can cause problems or maybe it is out of adjustment. what happens is the transmission control module thinks that you are at wide open throttle even when your not so it drags all the gears out and boost the line pressure to maximum...thats a real good piece of info posted.good luck

[vanquish2]

Great info tech! I'm not a auto transmission guy so thanks for helping these guys out!

[tudeamouse]

Where is the Throttle Positioning sensor located? Also what exactly does it look like?

[vanquish2]

Where is the Throttle Positioning sensor located? Also what exactly does it look like?

Is mounted to the throttle body on the right hand side if your looking at it....for an auto it should have 6 wires....

[tudeamouse]

Thanks Vanquish2- I picked up the T.C.M. Today and My husband is putting it in tonight!! <- fingers crossed

[tudeamouse]

Aren't they the same thing? I don't mean to sound stupid.THX

[vanquish2]

Not the same thing.....one is a sensor for input to the module.....correct me if I'm wrong tech

[tudeamouse]

Well I was told by the moderator and a few others to the check the throttle position sensor. I put in the TCM first and it didn't work. So I did the check that another member posted and sure enough the code was the third blip which meant the throttle position sensor. You guys are awesome. I ordered the sensor and it will be in tomorrow in the early AM!! I post if it is all set in the AM!Thanks to all

[tudeamouse]

Hey there I used the method listed on your post!! It worked the third blip was longer and the sensor has been ordered!!Thanks

[tudeamouse]

IT"S FIXED WOOHOO HOO It was the Throttle Position SensorNow all I need is a catAnd I can have it inspected!!!!