new guy here!! few questions

General discussion forum for J30 and M30 owners!
NegusJT
Posts: 45
Joined: Thu Nov 22, 2007 8:58 am
Car: 1993 J30t

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hola Nico,

i just got my 93' J30t a couple days ago and noticed a few things.

first thing i want to do is upgrade my stereo system. someone put an after market system in all ready but its kinda old........so how do i get to the speakers, front and rear and the head unit.

next the leather........whoever had the car before me was a smoker and i can tell the leather hasnt been cleaned in a good while. soooooo, some good detailing products and tips would be appreciated.

from reading the posts i see that in 94/95 they started using the kevlar timing belts........can i use those belts for my j30t?

i was thinkin about put 18" rims on jt, anyone know if that would effect the four wheel steering system? also what would be the recommended tire size for those rims?

ooh, i noticed that my exhaust is really really wet, if that makes any since. i mean even on warmer days the exhaust seems to have alot of moisture in it. it doesnt have a smell at all and is white, no color, but it just alot of moisture that comes out with it. ooh, it comes out as vapor as suppose to liquid.

last thing i think.....i have noticed that sometimes she idles rough and sometimes as smooth as silk. when she does idle a lil rough acceleration is slower than normal and she sounds like she has an exhaust leak or something. but when she is idling smooth, oh the power is enough to make any performance lover druel. any ideas what would cause the auburtrary switch.

oooh, really last thing............the sunroof. i know its a common problem with these cars. it goes up and down but wont open. motor? track?

ooh and just for the fun of it...............i dont know bout u guyz but i think the stoping power kinda suckz. i wanna be able to stop on a dime. is that just me n my car.....? car has fresh brakes on it though. they are semi-metallic. i was lookin on ebay and i saw a ceramic brake and slotted/cross drilled rotor set by posi brakes.http://cgi.ebay.com/ebaymotors...7.m29wat u guys think?

i am new to this vehicle so any maintence tips would be nice. i am used to doin basic stuff myself as i am havin the j30 as my second car from a 86' cressida, manual. my j30 only has bout 96+ miles on it so i figure if i keep it happy it will keep my happy......... i love to drive good cars and am very glad to have this one. if there are any j30 car clubs in the area, i would like to know bout that too.....oh i am in Baltimore.

thankz guyz


driverdriver
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Welcome to NICO!!!

I'm going to let one of the other guys chime in on your stereo question.

As for leather, use a product like Lexol, Leatherique or Meguiers. Multiple applications will likely have to occur over a number of days to get the leather back.

If your timing belt has not been done yet get it done ASAP. The J's engine is an interference engine. If the timing belt snaps, your engine is toast. Your looking at either a rebuild or replacement. All Nissan OEM belts for this car are Kevlar regardless of year. It will last you many, many years.

Lots of white vapor from the exhaust is normal.

Cause for your idle problems can be a number of things. The best place start is by cleaning your MAF sensor and then reporting back.

Sunroofs that don't open have a fried motor. Very common. Its a failry easy but labor intensive DIY project.

Any rims above 16 will damage the HICAS. If you want to go over 16 get the HICAS disable kit from one of our sponsers and disable it first.

As for brakes stick to OEM Nissan rotors, they don't warp (that or Brembo or Powerstop). Because of the weight of the car rotor warp is very common.


J30tman
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Joined: Thu Jun 15, 2006 6:22 pm

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For your sunroof issue... look at my thread Found our sunroof problem.

salemonkey
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Joined: Wed Nov 21, 2007 5:02 am

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sometimes breaks take a bit to wear in. i put new rotors and breaks on my last car, and it seemed to take awhile before i noticed really nice breaking power. but i my last car was lighter then these and also seemed to stop alittle bit better. but my j30t still breaks pretty nice

littlewillie
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Modified by littlewillie at 10:29 PM 12/23/2007

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yodawill2000
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Joined: Thu Mar 24, 2005 4:10 pm
Car: 94 Infiniti J30
Location: Grand Prairie TEXAS

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hehe

Come On Willie.Give the guy a Brake.

littlewillie
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Modified by littlewillie at 10:30 PM 12/23/2007

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yodawill2000
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I dunno man.I cant imagine posting on a Russian Forum and being anywhere near that clear.

NegusJT
Posts: 45
Joined: Thu Nov 22, 2007 8:58 am
Car: 1993 J30t

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hahaha, u guys are funny.

thankz for the help......i havnt cleaned the MAS yet but i will let u know as soon as i do.

i do have another concern though.......what is the usual gas mileage u guys get. i am getting like 13-14mpg/20-21kmpg city driving and proabably a lil better hwy. is this normal if not what can i do to improve it? i am getting new tires soon which i know will help a bit but anything else?

and does anyone atleast know the size of the front and rear speakers. i have googled it and it seems to be a mystery.

thanks

oh where is the post about changing sunroof motor

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yodawill2000
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Please know we are just goofin with the spelling Negus. We are a fun bunch here lol

That mileage seems Mighty low to me.I bet cleaning the MAF sensor will help.Also make sure you have a fresh air filter in and your tires are properly inflated.When the temp drop so does air pressure!!low tires will drop the mileage quite a bit.

And all I know about the speakers are the rears.They are 6X9 1 Ohm speakers.Not your basic off the shelf Ohm'age.If you still have the stock Bose Head unit you need the Bose 6X9's.

I got lucky and found two brand new Bose 6X9's on Ebay for cheap because the seller misspelled Infiniti hehe "Infinity" listings will get you some good deals at times !!!


Modified by yodawill2000 at 12:29 PM 11/24/2007

littlewillie
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Modified by littlewillie at 10:30 PM 12/23/2007

NegusJT
Posts: 45
Joined: Thu Nov 22, 2007 8:58 am
Car: 1993 J30t

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hey,

so like i read the thread about the sunroof and i am confused.....do i just need to tighten up a bolt or do i need to replace the motor itself. when i read it, i didnt catch any part where he replaced anything. and i am having the exact problem he said.

and second, i noticed that i cant use my key in the drivers side door anymore, well, i can lock the door, but when i unlock it from that side and open up the door the alarm goes off. and it wont do the second unlock that unlocks all the other doors. so right now i am stuck having to unlock the doors from the passenger side. in fact just do me a fav n tell me how this whole locking and alarm system works.......

and good, i was hoping the rears were 6x9's. whoever had the car before me already changed all the speakers but like i said, they seem old. i found some nice cheap boston acoustics SL 6x9's so i think i will grab them up. now as for the fronts on the door, i am guessing they are 6.5's. is that right? its kinda wierd though, because i dont get loud sound out of them and i am not sure why. i mean i can barely hear them.

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yodawill2000
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You said he replaced the speakers but did he replace the OEM Bose Stereo ??If not you will need the Bose speakers.

What he did to fix the sunroof was tighten up the "Clutch" on the sunroof motor.Not replace the motor.

NegusJT
Posts: 45
Joined: Thu Nov 22, 2007 8:58 am
Car: 1993 J30t

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yea, he changed the head unit to. i am thinkin about gettin another one cuz it is old.anybody have any speakers suggestions. i am leaning towards polks or boston acoustics.

anybody know where i can get some glow gauges?

aight i will dat clutch thing later......

littlewillie
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Modified by littlewillie at 10:30 PM 12/23/2007

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StevieRaySTL
Posts: 701
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Car: 1990 Infiniti Q45 w/ Nico ECU
1993 Infiniti J30 w/ x-flow
1997 Toyota Landcruiser

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NegusJT wrote:i have noticed that sometimes she idles rough and sometimes as smooth as silk. when she does idle a lil rough acceleration is slower than normal and she sounds like she has an exhaust leak or something. but when she is idling smooth, oh the power is enough to make any performance lover drool. any ideas what would cause the auburtrary switch?
-- I've been having this problem once or twice a week now for a month or so, and I'm planning on looking into replacing the knock sensor and cleaning the MAF sensor. If anone here's been through this lemme know what Negus and I are getting into, thanx kindly.

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yodawill2000
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Cleaning the MAF sensor is a snap.Just be sure and use "ZERO RESIDUE" contact cleaner.Any electronics store will carry it.When you open up the tubing connecting the maf to the intake you will see a screened off area.behind that screen you will see what looks like a resistor mounted veriticle in the airstream.Thats the sensor.Gently spray it until it looks clean and let it air out for a few minutes before you put it all back together.Done !!

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StevieRaySTL
Posts: 701
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Car: 1990 Infiniti Q45 w/ Nico ECU
1993 Infiniti J30 w/ x-flow
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-- Thanx for the info, yoda, sounds like a snap. Any tips on knock sensor? I think that's my problem.

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yodawill2000
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Havent dealt with that yet ..All I know is you can use a 1 megaohm resistor in the KS connector to verify its the problem.If the lag goes away when the resistor is installed the KS is defective.Or your running sour fuel.


NegusJT
Posts: 45
Joined: Thu Nov 22, 2007 8:58 am
Car: 1993 J30t

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hey guyz two things...........

about the idleing rough i was describing, if cleaning the MAF doesnt fix it then wat else could be the problem and how much trouble would it be to fix.

second thing, i noticed that i hear a knocking n loud tapping from the front left side of the engine. i know its in the engine cuz it accelerates as i give it gas. i was thinkin it might just be low oil but when i checked it, it seemed fine. i put about a half a quart in there and it eventually went away but now its back again and i know it didnt leak out a half quart that quickly.......like 24-36hrs. it came back yesterday eve n i havnt started it today so when i go outside i am gonna check the oil n start her up to see if i hear it. but till then wat else could it be?

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StevieRaySTL
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-- Knock sensor?

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yodawill2000
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Could be a Valve Solenoid.They can make a pretty loud clicking.Not sure a bad Knock sensor would cause a rough Idle.It retards timing if it hears pre detonation.

Plugs, Fuel filter , many things can cause it I would think.Cleaning the Maf and running a can of BG44k through her would be my first move.


NegusJT
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Car: 1993 J30t

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plugs, fuel filter...etc would cause the rough idle.??and how difficult is it to change that valve solenoid? is that like a major thing?help me out here cuz i am preatty ignorant on these nissan engines. and the size of this engine is preatty intemidating.

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yodawill2000
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Valve solenoid isnt something you want to attempt

Get some BG44K off ebay and see if it doesn't clear things up.

Bad plugs will cause misfires and rough idle etc.Any idea how long yours have been in ?


NegusJT
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Joined: Thu Nov 22, 2007 8:58 am
Car: 1993 J30t

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no i dont know how long my plugs have been in there. where are they located? under the cover? and i noticed there isnt a distributor cap n rotor on the engine. how does that work?

n i hope that bg44k is special........that stuff aint cheap. lol. how come i just cant get some stp or marvel fuel system conditionor/cleaner from the local autoparts store?

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yodawill2000
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BG44K is MUCH stronger than any other off the shelf fuel system cleaner.It will also get any crud build up that may be on your injectors. That would cause a rough Idle.The stuff is so strong that it HIGHLY advised to change the oil afteryou run a tankful through.All the junk it cleans can end up in your oil as well as the BG getting past your Rings.

J's have an electronic ignition. No Distributor Ect.

On either side of the engine you will see three cables going to a coil. Each plug has its own coil.Two bolts hold the coil down. Remove those and look down the hole to see your plugs.Use ONLY OEM spec NGK plugs.The ones listed here as OEM Double platinum PFR5G-11If you call and tell them your a Nico member she will give you a nice discount.

http://www.sparkplugs.com/resu...72685

NegusJT
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Joined: Thu Nov 22, 2007 8:58 am
Car: 1993 J30t

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ok false alarm on the loud tap/ tickin sound.

when i went back to check the oil.......i had to really take a good look at the dip stick, but yes it was bone dry. man i felt dumb but what a relief. i did find it interestin though that the oil light didnt come on. i mean it blinked a couple times when a came to a hard stop but didnt really come on. i had noticed i have an oil leak..........looks like i need to have the rear main seal replaced. ugh!

as far as the rough idle, it doesnt do it anymore......dont ask me why. i didnt clean off the MAF yet but i am still goin to. sometimes it seems like it wants to run rough when i gun it real hard........but other than that.....she runnin puuuuurty!i did put some Marvel Mystery Oil in the gas tank. i did however used like twice the amount the instructions say to use. but hey she runnin good. cool huh?


elan
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yeah I donno how I would speak Russian if it was not native for me... though I've met a couple of America born guys who spoke Russian so well that I could not recognize they were not Russians. even people from other ex USSR republics speak Russian with a great deal of accent

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StevieRaySTL
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Car: 1990 Infiniti Q45 w/ Nico ECU
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NegusJT wrote:ok false alarm on the loud tap/ tickin sound.

when i went back to check the oil.......i had to really take a good look at the dip stick, but yes it was bone dry. man i felt dumb but what a relief. i did find it interestin though that the oil light didnt come on. i mean it blinked a couple times when a came to a hard stop but didnt really come on. i had noticed i have an oil leak....
-- Whaaaa? Bone Dry? Dude, obviously your oil light wasn't working properly, it prolly came on at hard stops because it has a bad bulb, connection, etc. I'd check into it, my oil light saved my a$$ recently.

NegusJT
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Joined: Thu Nov 22, 2007 8:58 am
Car: 1993 J30t

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yea i agree stevie, and i will cuz i would hate to have it go up on me due to not having a few quarts of oil.......

and i noticed that u have a legend........so tell me, which one u like better. the J30 or the legend......and be honest. lol.


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