i just replaced the automatic transmission on my 1994 EX Wagon and noticed the engine speed was different than before the replacement. the previous tranny was basically grinding itself up to shreds when shifting gears, but on the freeway, it was pretty smooth. i recalled seeing 80mph at about 3500rpm. However, with this new tranny i just replaced, I'm seeing upwards of ~4000rpm when going 80mph. at 60mph, it's doing about 3000rpm, which i recall, was about the same as the old tranny. could my torque converter not be fully locking?

I'm sure I did everything correctly when replacing this tranny, but would like to compare what you guys get on the freeway when doing these speeds. Again, this is an automatic. not sure what year, but i'm assuming it's 94-97. Thanks in advance.


Modified by ttcheung97 at 9:52 PM 8/4/2008

 

ya 4k is high for automatic accord engine.

 

is it going into overdrive?

 

Your gonna get horrible gas mileage

 

Did you use the correct Torque converter? I had the same problem. I used the original cars T/C that was with the first Trans. Come to find out the T/c for the new trans was a lot bigger. I had to put the correct Converter in and my prob solved.

 

ARE YOU SURE THE NEW TRANNY IS A F22 accord tranny..???????......... If the tranny shifted to all gear and if at 80mile/h, you're at 4Krpm, THat's a prelude short gear ratio tranny. Prelude tranny does that, it is about 1000 rpm higher than accord.

 

unfortunately, I'm not sure if it's a Prelude tranny nor if it's the correct torque converter. I bought the tranny from JapanEngine.com, and the place was reputable, as they've been in business for many years and the warehouse was enormous. I had thought about using the old T/C in the first place, just for kicks, but then was very wary since it might've still has some metal shavings and bits from the transmission.

I don't exactly feel the torque converter kick-in either. 70mph is around 3500rpm. I'm not really down with taking the tranny out again and swapping T/Cs. ugh.

 

is it going to overdrive?, well, i assume you mean 4th gear. if that's true, then yes, it's going to overdrive. however, like I said, I am not really seeing the torque converter kick in, as in that drop in the RPM.

I swear, seeing these rpms makes me feel like I'm driving my miata.

 

So are using the T/C that came with the JapanEngine.com trans??

If so, did it mount to your original Flexplate??

The T/C I got from the TigerJap auto parts would not connect to my original flexplate, I had to have a larger flex plate for the JDM trans..





Modified by ronqqq at 9:40 PM 8/6/2008

 

what kind of tranny, used, new, rebuilt, aftermarket. could have alot to do with it, 4k seems kind of high(as everyone else as said).

 

the torque converter was already on the tranny when i went to the warehouse to buy the tranny.

I'm wondering if it could be the lockup solenoid that's on the tranny. However, if there's a fault in the solenoid then I would be expecting some sort of error code from the "D4" indicator on the gauge. I am not.

the tranny does not have a serial number either as it's from japan. I KNOW it's a 94-97 tranny because it looks exactly the same as my cousin's 94 LX tranny, and different than my parents' 2002 SE's tranny.

 

You can test the lockup soleniods by connecting 12v to them. What I did was I ran a wire through my window from the soleniods and put a switch on them for testing.. once your in forth gear flip the switch and see if the RPMs drop.. Mine checked ok


Did The T/C connect to your original Flex plate??

You prob have a JDM trans, that is geared like a prelude.

 

flex plate, you mean drive plate?, where you put the 8 bolts on the outer perimeter?

Yes, I'm gonna check the resistanec of the solenoids, and if that's not working, going to swap solenoids with the old ones. the old tranny shifted lousy, but the lockup worked. i'm not sure if i'll do the "wire through the window and switch" method, but that's pretty ingenius, manual lockup.

 

Yea, Flex plate = drive plate.

The T/C that I got with my tranny was a lot bigger then the original t/c, and would not connect to my original flex/drive plate.

I checked the resistance of my solenoids but I wanted to make sure they was working so I did the wire thing...

What I am wondering is if you (ttcheung97) have the larger or smaller T/C???

 

Perhaps you might want to check the pressure lever cable adjustment.
Here is a link; https://honda-tech.com/zerothread/2361222

 

I think the cable for shifting points, not top end gearing.

 

the torque converter is the same size as the one on the outgoing tranny. The thing fits; if it didn't, my car wouldn't be going in the first place.

The solenoids were working fine. I decided to swap with the ones on the outgoing tranny. The car still acted the same.

Assuming it fits, would the size of a torque converter have an effect on speed? it's not a geared piece of hardware, just a pump and stator and some other bits and pieces. the solenoids would monitor how much pressure is applied to the lockup piston, and as a consequence, how much slippage would be allowed.

I'm getting really serious on swapping out the new TC with my old TC, but am also thinking if I should try and find for the power of my warranty.

 

It will do you no good to swap the T/C out if its one of the same size....

I am assuming your trans is a Japanese domestic out of an accord... The trans gears are lower highway gears... so the size of the t/c is larger, the outer screws are about one inch wider then the other t/c... so yea, its like a gear,, the larger the T/C the slower the engine will have to turn..
You will need the larger flex/drive plate to connect the t/c to..


The correct t/c measures 10 3/4" across the back.

 

i'm thinking the torque converter just isn't working in the first place.

you ARE correct about the outer screws on the drive plate. My friend and i were planning on using the same drive plate when swapping trannies, but then we noticed the T/C holes were different diameter. too bad we noticed this when everything was bolted back up.


Modified by ttcheung97 at 4:52 PM 8/13/2008

 

you can prob get another drive plate from the place you bought the tranny,,, A new ones is way to high!!! I think around 150.00... If you do get a new one you will have to order it for a 93 prelude si

I call the place that I bought my tranny after i received the trans and they sent me a drive plate free of charge...

 

i went back to the tranny warehouse, telling them the torque converter simply wasn't locking up. The mechanic came out and went for a ride with me. Alright, I'll agree that JDM (yo) transmissions have slightly lower gearing, but then I'll definitely disagree that the lockup solenoids "gradually apply pressure" to the T/C," as the mechanic said. He basically told me that i wasn't supposed to feel the T/C lockup. BULLSHIT! Even if this was a JDM T/C, I am so positive that my RPMs on the freeway are just too high.

If the T/C's not kicking in, would my car theoretically not be able to run in the first place?

thanks for the continued help.

 

the high engine speeds is really killing my gas mileage. I used to get upwards of 29MPG, but now i'm getting 23.5mpg. I recently lowered it, so i did a home alignment (corrected the toe), and i also changed the oil and up'd the pressure on the tires. still lousy fuel economy.

I'm very close to swapping TCs again, but am really wary about any bits of crap that might've ended up in the TC since the old tranny was burning up the fluid prior to it being swapped out. any suggestions? Also, is there a proper procedure in pushing the TC into the tranny main shaft? The tranny that i have laying around right now, I can't seem to get the TC to sit completely in.

 

I've got the 2.7L in my car and I just got back from a couple hundred mile trip. I was running at about 85mph and my engine was at about 3300-3400rpms. I'd say you either don't have an Accord tranny or you've got the wrong T/C on there.

 

is the T/C supposed to fire off a wrong code or something if it's not locking uP?

I keep on thinking the T/C is just "rusty," and that some hard driving would mitigate this problem. however, I'm not driving THAT hard, not to the point where i'm getting 23mpg.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ttcheung97 &raquo;</TD></TR><TR><TD CLASS="quote">the high engine speeds is really killing my gas mileage. I used to get upwards of 29MPG, but now i'm getting 23.5mpg. I recently lowered it, so i did a home alignment (corrected the toe), and i also changed the oil and up'd the pressure on the tires. still lousy fuel economy.

I'm very close to swapping TCs again, but am really wary about any bits of crap that might've ended up in the TC since the old tranny was burning up the fluid prior to it being swapped out. any suggestions? Also, is there a proper procedure in pushing the TC into the tranny main shaft? The tranny that i have laying around right now, I can't seem to get the TC to sit completely in. </TD></TR></TABLE>

I hate to break this to you but honda started using a linear lockup torque converter clutch in '94 so it is possible that the lockup is applied gradually..............and the torque converter throws rpms off about 250 or so when it isn't engaged


Modified by YeuEmMaiMai at 5:30 PM 8/25/2008