Hey guys, just a doubt I have. Here's what happened:

Last Wednesday my Alt/Water belt snapped. I lifted the car off the front tires only so I could get to the belts and release the other two to change all three at once.

Since the car has a UD pulley the power steering belt (K30350 or 5030350 or 35k3 or whatever size...) was a hassle to get, so I finally got it today and being excited to finally get my Z out on the road again I didn't really look behind me while I changed the belts.

I turned on the car, let it idle a while to check the tension was correct after it, while it warmed up I checked all the fluids, everything seems ok.

But then after I take a bath and leave for work while I'm taking the car out of the garage I notice a big puddle of A/T fluid where the car was sitting. I move the car a bit, look at the road. I see no signs of a leak. I just went to lunch and got back and saw no signs of a leak when I rolled out ( I stopped to check.)

So I'm confused and kind of worried.

Do you guys think there might be a leak somewhere? Or is it normal for the car to leak A/T fluid if it has been in that slanted position for so long?

The front tires were about 1.5 to 2 feet of the ground.

Any answer is appreciated.

Oh yeah, just in case I have a 90 N/A

 

Was it under the center of the car? (I'm only asking to ensure that it's ATF from the trans and not from the power steering system, which also takes ATF.)

If it was under the trans, it is absolutely possible that it leaked out from the trans while the front end was up. A transmission is not completely sealed, so if you lifted the front end enough (as you say you did), it is very possible that fluid simply leaked out the back. Top off the system and you should be fine.

 

Yeah it was under the center of the car and a little bit further back. I would say in the area underneath the transmission. I thought the transmission was sealed of completely so that's why I was worried.

Thanks for the reply.

 

Hmmm, now this is strange I dunno if it has to do with the tranny or not.

I just got back from taking a short cruise with my wife and as we were driving, the car started to get stuck in 2.5k and 3k rpms. It didn't release it even as I was hitting my brakes. Basically I had to put the car in neutral, hit the gas to like 5k rpms and it would go back to idling normally. But when I passed the 2.5k rpms the car would do it again...

We decide to get back to the house before anything else happens and when I turn off the car I can hear this "hrrrmmmm" type noise coming from underneath the area were the gas tank is at. It stopped and started doing it in intervals of like 1 or 2 mins each time, the noise lasted like 20 - 30 secs. After about 15 mins it stopped completely.

I can't really see that well underneath the car cuz it's 1:30am already, so I'll check it out tomorrow. But do you guys have any ideas what this could mean?

No fluid leaks as of the moment though.


Oh yeah, I also checked the tranny fluid and its over the limit it needs. How do I go about draining the extra amount I have?

And just to make sure, I checked the fluid when the car was warmed up, turned on, on Park and on a level surface.

 

well if it wouldnt GO over that it could be the tranny...if in nuetral it wont drop back down....then its not the tranny..

 

Im sorry... what?

Do you mean that if the car didnt pass the 3k rpms, then that would mean that my tranny is faulty, but if I put it in neutral and it stays stuck in the 3k rpms then it isn't the transmission that's faulty?

If that's what you mean, then what could be the fault of it?

 

thats what i mean. sorry. dude...mabye im dislestic in the z32 forum cause no one over here understands me yet i understand me...lol...

zlover will have a much better suggestion for you than me. but yeah. if its out of gear in nuetral...will it rev up to 3 grand and stop... try it then you can eliminate the tranny being the problem. cuase if the tranny is not engaged on the engine (aka in nuetral or park) and the engine still does stupid crap like that, it cant be the tranny. however if it does rev all the way up when not in gear you might have 2 problems, tranny and something with your idle (or soemthing affecting your idle)

 

I can rev it all the way to 7k rpms in neutral and parking. Basically that's what I have to do for it to disengage and go back to idling normally (well 5k at least) before I can put the car in drive. Then it does it all over again.

If you mean I should rev it up with the car in neutral and see if it get's stuck in 3k rpms when I stop reving... Then no, cuz the solution I've found is to put the car in neutral and rev it up.

I had to put the car in neutral and rev it up everytime I got to a red light, or a turn, so the car could go back to idling and it wouldn't put stress on my brakes.

Since I live 10-15 mins from work I'll take the car today and see what else I can recognize as out of place.

No leaks under the car today either...

 

sounds like trans and soemthing screwy with the idle...hmm...no real good ideas from me after this....so sorry, at least i got details outta him right everyone.....everyone???? ok they will be here

 

woah....genious...i think (in my old camry) this happened to my auto tranny (not reving past 3k in drive) when i had gotten it back from a tranny change. it was low on fluid so was like engaging all retarded and crap, its becuase they run on veins and other hydraulic principles so with out the proper amount of fluid it wont drive right. thats what happened to me at least. as for not dropping below 2000 unless reving it up, i dotn know.

 

Actually I just checked it with a buddy of mine during our lunch break.

It seems the throttle body is getting stuck a bit before it closes.

So I'm guessing the reason why it stops when I rev it up is because it pulls it back enough for the springs to push with enough force to shut out the throttle body.

I did check the car slowly from gear to gear and no wierd noises or feeling come from the car except when I put it in reverse, it makes a semi-loud thump when it falls into gear.

Tomorrow I'll try to clean the throttle bodies and the springs, see if it stops getting stuck.

I was suggested to use carburator cleaner for the throttle bodies. I thought maybe some WD40 for the springs?

You guys got any other suggestions?

 

to me it sounds like some sort of vacuum issue..but i don't know, i'm not very good in the z32 field. But if you end up needing another tranny, i've got one. Just hit me back if so. Oh and my car has been on stands for weeks and isn't leaking, being both the front and back in the air.

 

Vacuum issue?

I'll check the vacuum lines tomorrow too I guess...

I've had the car in stands on front and back for a few days too, but this time I only had it on the front, so I'm guessing the leak was because of what ZLover4Life said.

 

i've never heard of an auto tranny leaking while up on jacks...unless the seals bad. And i've had nurmous autos and never had that happen. so i'd say somethings loose or its a bad seal.

 

i think there is actually a stop to keep the throttle valves your talking about from opening to far. not sure. but if its getting stuck open could just be becasue its not greasy. i cleaned mine once really well...to well it de lubed the rotating parts on them so it stuck. i just greases it as best i could, then sprayed silicon spray on them every time i got in an out of the car until it just went away. see if it is opening to far....then half throttle or w/e should push like full...so i doubt thats it. but i dotn have my z32 anymore to look around in it and what not. so.... yeah. that or mabye im missreading your post about the springs shutting out the throttle body...i dont really follow i tried to interpret what you mean but yeah....mabye im wrong.

 

Yeah, it sounds like the t/b's are hanging open like you thought. Did you leave any tools on top of the motor while changing the belts? I would inspect the linkage really closely while opening and closing it by hand. I have heard that there are some tubes or pipes that can get bumped / moved and interfere with the linkage. Check for that.

On you fluid leak, it's common for fluid to leak out of the rear main seal, where the driveshaft go in, if the car is raised to too steep of an angle. If the fluid was overfilled, it will only add to the problem. It's not a good idea to run an atuo tranny too overfilled with fluid. I think some of the Z'zzzz have a drain plug on the oil pan.

 

but would taht explain why his car wont rev over 3k when in drive but will rev all the way when in nuetral....i think his ATF is low if he hasnt filled it yet....

 

I interpreted his statement as the throttle is sticking open and won't go below 2500 - 3000 rpm until he revs it way up and snaps the t/b's shut.

Maybe there's still a tool stuck in there....

 

Holy crap I regret not getting here sooners... this has become a huge cluster f*ck.

Let me start by making one statement. No one should ever respond to a question when they don't know what they're talking about; misinformation can be more hazarous than flat out lies.

That being said...

Wrong. Apparently you missed my response. If you don't believe me, do me a favor - go find any transmission, pick up the front of it, and watch all the fluid that pours out from the opening where the driveshaft sits. I've pulled several 300ZX transmissions, and nothing is more unpleasant than tilting the trans too much and having fluid (especially gear oil in the case of 5-speeds) pour all over you.

snwbrderphat540 - He established on his own that the RPM problem is not related to his transmission, but to a sticking throttle. Therefore, as the trans fluid question has been answered (and re-answered, incorrectly, and answered correctly again), it can be forgotten.

CanyonCarver - You are absolutely right. Furthermore, your response stopped me from having a heart attack before responding.

Kyoke - carb cleaner and WD40 will work just fine. Personally, I'd make sure it's a carb/throttle body cleaner (most of them are), but really it shouldn't make much of a difference as it's just going to burn off when you start the car anyway. If you've never done it before, let the engine cool, spray into the throttle bodies while opening them and closing them, then clean with a toothbrush until shiny.

If you have any other issues related to a sticking throttle, can you please start a new thread as to prevent other people from thinking it has anything to do with your trans dripping fluid out the back while it was lifted? I know you had initially thought the two were related, so I don't blame you for posting about it in here, but we now know they aren't related.

 

mybad...i was having trouble reading like, his descriptions...i tried to stay out of it...i really did...

 

No problem... you didn't give any flat out misinformation, unlike wreckedj30 saying a trans can't leak fluid unless a seal is bad, so it wasn't a huge deal. I figured you just weren't understanding what he was saying.

 

no...i still dont think i am. otherwise what i said would have been to some use.

 

what are you saying i'm wrong, i leave to polish some thing and come back to **** talking..jk No every auto trans i've dealed with never leaked. well until the driveshaft was pulled. The trans in the j30 out back hasn't leaked, in the 8 mths. its sat, it was up in the front, back, side and such. Never leaked. So i was just stating that...i'm not tring to give bunk advice, but yeah.

 

Ok, sorry for keeping the thread running. I just kept going cuz it was already started and the conversation had changed.

Thanks for the advice everyone, especial ZLover. I will try tomorrow before work to drain the extra tranny fluid I have in the car & clean the T/Bs.

Again, sorry for taking this thread off topic and keeping it running.

 

No need to apologize - it's technically your thread, so you can do whatever you want with it. I just feel that if you want accurate advice on a separate issue, you have to disassociate the two subjects. In this case, since you mentioned the rpm problem in a trans leak thread, you got responses that related the rpm problem to your trans leak, even though they are not connected.

Good luck with everything though.