driverdriver
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2901 posts
NICO's longtime resident Canuck!!!
Toronto, Canada
8-1-2003
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Welcome to NICO!!!Does the car drive normally for a short while when you turn it off? After that it will rev high to go from 2nd to 3rd or not go at all? Sounds like you need a new transmission revolution sensor.
Currently in the Garage:
Daily Driver: Acura EL
Daily Driver: Saab 9-5 2.3t Aero Sportwagon
Spring/Summer/Fall Screamer: '94 Infiniti J30t gold package w/HICAS (10+ years of ownership and she still looks&runs like day one!!!)
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tcrow31
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23 posts
94 J30
houston TX
9-10-2006
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| « Re: (driverdriver) | 9:39 PM 9/10/2006 |
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| Quote, originally posted by driverdriver » | | Welcome to NICO!!! Does the car drive normally for a short while when you turn it off? After that it will rev high to go from 2nd to 3rd or not go at all? Sounds like you need a new transmission revolution sensor. |
Well first thing this afternoon it drove fine. After eating at Chillis and driving home the car started to take a little longer to shift into 2nd then right before i got home it would go to 4k rpm before shifting into 3rd skipping 2nd. and it also will not down shift to 2nd either. I got it to go into 2nd once by letting the car coast at like 30mph while the car was in 2nd gear as soon as it grabed i gave it a little gas and it took off and didnt seem like it was slipping. To replace that revolution sensor I just need to drop the pan? and is there a way to test it before i change it?? --Tim
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driverdriver
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2901 posts
NICO's longtime resident Canuck!!!
Toronto, Canada
8-1-2003
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A bad rev sensor would spit out a code, most likely while driving. If you know of some one with a OBD1 reader its wise to drive around with one plugged in to make sure this is the issue.
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tcrow31
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23 posts
94 J30
houston TX
9-10-2006
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I will get it checked out at a shop. I do not have any CEL light turning on. I also notice it was not going into 4th this morning. I hope its just one of the sensors. The pan looked clean from metal shavings other than the magnet. If it is the trans going out i hope i can get one cheap from a junkyard.
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tcrow31
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23 posts
94 J30
houston TX
9-10-2006
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does anyone know if a 300zx TT auto trans will fit into th J30s with no modifications?
Modified by tcrow31 at 4:15 PM 9/11/2006
Modified by tcrow31 at 4:32 PM 9/11/2006
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DominickJ30
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856 posts
1993 Infiniti J30t
Chicago IL
1-18-2005
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| « Re: (tcrow31) | 4:28 PM 9/11/2006 |
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Just a stupid question, but does this only happen when the car is cold?
93 J30tMy SoundDomain Page 
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tcrow31
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23 posts
94 J30
houston TX
9-10-2006
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it does it both when its cold and hot
--Tim
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DominickJ30
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856 posts
1993 Infiniti J30t
Chicago IL
1-18-2005
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| « Re: (tcrow31) | 4:34 PM 9/11/2006 |
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What if you try to shift gears manually? Or if you keep it in 2nd, does it stay stuck in first?
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tcrow31
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23 posts
94 J30
houston TX
9-10-2006
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| « Re: (DominickJ30) | 4:44 PM 9/11/2006 |
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when i shift it manually to 2nd it goes like its in neutral then shift to 3rd and it grabs. so no 2nd all together.
--Tim
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DominickJ30
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856 posts
1993 Infiniti J30t
Chicago IL
1-18-2005
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| « Re: (tcrow31) | 6:21 PM 9/11/2006 |
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Sounds like maybe a soleniod not engaging.Is it just second gear or anything else not work either?
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infinitidreams20
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129 posts
1994 infiniti J30T
Sterling VA
1-27-2005
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| « Re: (DominickJ30) | 6:35 PM 9/11/2006 |
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| Quote, originally posted by DominickJ30 » | | Sounds like maybe a soleniod not engaging. Is it just second gear or anything else not work either? |
you know my 2 cents but i was having a problem that sounds very close to this pretty much what every one is stating. but on my car i noticed that it did it during the summer after a little bit of driving but, not at night or in the winter, and also when it did it while driving i found i could turn the car off while costing wait about 2 to 3 seconds turn the car on and BAM all good again so i installed an after market trans cooler from B&M and so far all good no problems and it was hitting 100 in the summer here maybe the soleniods are just overheating. and my J has 145,000 on it and running like the golden child
1994 infiniti J30t Gold Trim 145,000 miles running strong 2.25 borla exhaust
Optima yellow top
Alpine CDA-9856 head unit
Infinity reference 2way 5.25 in the rear, Infinity reference components in front
Audiobahn 8000T 800 watt RMS at 2ohm
Power Acoustics 5 farad capasitor
Alpine 10'' Type X dual 1000 watt RMS (only running 800) 
Soon to come Bluetooth radio interface (sweet option for the alpine) 
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tcrow31
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23 posts
94 J30
houston TX
9-10-2006
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| « Re: (DominickJ30) | 7:03 PM 9/11/2006 |
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Its 4th gear as well. I hope its something minor. Ill find out tomorrow I left it at a shop today. Finger crossed
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tcrow31
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23 posts
94 J30
houston TX
9-10-2006
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| « Re: (infinitidreams20) | 7:11 PM 9/11/2006 |
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Yeah i bought a trans cooler the first day i got it havent installed it yet. That was this weekends project. Yeah this Texas heat is murder on auto trans that why i usually go 5spd. but wanted something a little more luxury this time around.
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tcrow31
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23 posts
94 J30
houston TX
9-10-2006
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so does anybody know if a 300zx TT trans will fit with no modifications?
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NismoChi
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263 posts
94 J30
SF Bay CA
8-7-2005
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| « Re: (tcrow31) | 8:59 PM 9/11/2006 |
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The answer is no.
The J use RE4R01A same as the non Turbo Z32 300ZX. With no modifications, i look into it myself, not even the RE4R01A from the 300ZX bolt on and hook up to the J.
On the other hand, the Z32 300ZX TT use RE4R03A, you tell me what the chance is that it will bolt right up to the J ??
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tcrow31
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23 posts
94 J30
houston TX
9-10-2006
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| « Re: (NismoChi) | 9:14 PM 9/11/2006 |
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I have no clue. Its just that i found a 300zx TT auto trans with 25k for $295 and a 90 warrinty for any internal malfunctions on Ebay. I thought that it might be a cheaper resolution to a rebuild.
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DominickJ30
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856 posts
1993 Infiniti J30t
Chicago IL
1-18-2005
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| « Re: (tcrow31) | 10:29 PM 9/11/2006 |
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Well it is the same trans, its just modified for more power on the TT.I dont see how it wouldnt fit.
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NismoChi
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263 posts
94 J30
SF Bay CA
8-7-2005
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| « Re: (DominickJ30) | 11:41 PM 9/11/2006 |
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Well i'm sure the bolt pattern would be the same and bolt up to the engine, but I'm not sure if the TT and NA transmission are even the same physical size, therefore they may use a different driveshaft.
As for the RE4R01A that are used by both 300ZX and J30, I've looked at them both inperson, they are the same size but the sensor plug-in are different, so are the # on the tag.
Trans. Model No.
J30 NA- RE4R01A
Z32 NA- RE4R01A
Z32 TT- RE4R03ATrans. Model code No.
J30 NA- 45x71
Z32 NA-45X65
Z32 TT-51X08 RE4R01A from a Z32
RE4R01A from a J30
 BTW, i'm sure if someone can fit a VG30DETT with a 5sp into a J30, one can fit
the TT auto into the J, but not without modification.
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DominickJ30
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856 posts
1993 Infiniti J30t
Chicago IL
1-18-2005
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| « Re: (NismoChi) | 12:17 AM 9/12/2006 |
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Im pretty sure that only the internals are modified, different clutch material, different tollerance etc. The case and input and output shafts should be all in the same place.Maybe Q45Tech knows the differences.
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tcrow31
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23 posts
94 J30
houston TX
9-10-2006
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Well for those that have done a TT swap in theyre Js and stuck with auto know what the differences are and what mods if any need to be done to get the trans to work in our cars? Im going to call the dealership today and see if the trans will cross reference over with each other.
--Tim
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NismoChi
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263 posts
94 J30
SF Bay CA
8-7-2005
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| « Re: (tcrow31) | 10:10 AM 9/12/2006 |
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Good luck with calling your dealership, i bet you that they will just tell you that it won't fit without even looking. First we have a Infiniti, the the 300Zx is a Nissan. Secondy, they have different part #, how would they know if they fit if they don't have one of each sitting side by side.
Let me tell you a story, when i didi my timing belt a month ago, i went to a Nissan Dealer to pick up a timing belt, i talked to the part manager and telll him i have a 94 J30 and wanted to get a timing belt for the 300ZX for the same year, same engine and evertyhing, right? At first, he wouldn't even sell me the belt, he keep saying i have a Infiniti, and they have no cross reference and l should go to a Infiniti dealership, in the end i just tell them that i would take my risk and give me the damn belt, then, he call a Infiniti dealer to confirm the part #. Good luck doing that over the phone. 
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tcrow31
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23 posts
94 J30
houston TX
9-10-2006
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| « Re: (NismoChi) | 2:22 PM 9/12/2006 |
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Well called my local dealer and they were pretty helpful and gave me a number to a local shop that works on alot of Z cars. I spoke with a guy there and he says the trans. will bolt right up but he believes the tail shaft is differnt so the drive shaft might not bolt up but can be eaisly modified to work. On another note i also found out that the Pathfinder and QX4 uses the same trans as ours and they are a direct bolt on to our cars.
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tcrow31
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23 posts
94 J30
houston TX
9-10-2006
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Does anybody know where other than the dealership to get a revolution sensor. I checked Everything Infiniti but couldnt find it.
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driverdriver
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2901 posts
NICO's longtime resident Canuck!!!
Toronto, Canada
8-1-2003
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I believe the rev sensor is also known as the transmission turbine sensor. I would call them up.
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tcrow31
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23 posts
94 J30
houston TX
9-10-2006
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where do i go to download the FSM?
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lovemyj30
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2 posts
1994 infiniti j30
sacramento ca
10-31-2006
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| « Re: Trans is skipping 2nd gear (tcrow31) | 2:30 PM 10/31/2006 |
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mine just started to do the same thing the service manual has a saction for this problem self diagnostics procedure page#at-34 mine had a bad revolution sensor i diagnosed the problem following the steps in the manual bought the part from infiniti and made the repairs myself and fixed my shifting problem
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tcrow31
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23 posts
94 J30
houston TX
9-10-2006
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| « Re: Trans is skipping 2nd gear (lovemyj30) | 3:46 PM 10/31/2006 |
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I wish i had tried that but i got tired of trying to trouble shoot so i just replaced the whole thing. cost me 1300bucks with a 6mo parts and labor warranty.
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jspecj30t
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11 posts
1993 infiniti j30t
gilbert az
8-20-2006
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| « Re: (tcrow31) | 3:55 PM 10/31/2006 |
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online FSM J30 / 300ZX HOPE THIS HELPS
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mari79
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2 posts
lebanon pa
8-27-2007
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| « Re: Trans is skipping 2nd gear (lovemyj30) | 6:35 PM 11/17/2007 |
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can you tell me where the revolution sensor is on the car
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