2007 TL Base 160k miles.. Okay, so I replaced my VTEC solenoid and VTEC pressure switch thinking it will solve a problem I'm having with the TL. The symptoms are that when I floor it, the RPM stays stuck at 5000-6000rpm and does not shift to the next gear and at times it will but it will take really long. It also revs to 7000k RPM without shifting to the next gear... In October, I replaced the 3rd-4th pressure switches from Honda, along with a drain and fill with OEM tranny fluid.. I had a scanner plugged in when doing test runs the pressure switches seem to be working fine with the scanner saying "on-off". When I let go of the accelerator the gears shift to their placement perfectly with no jerks. When I drive normal without my foot being so heavy the car drives perfectly fine and shift to all 5 gears. I checked tranny fluid and fluid is at normal level with the color still being pinkish. When I bought the car back in 2016 I checked the service history and it was from a lease and the tranny fill and drain intervals we're on point, when I got the car I changed all fluid including the tranny. What can the issue be? A clogged tranny filter? A faulty converter?

 

Weird question, have you tried seeing if it will shift when using the tip Tronic select shift when it does this condition.
Worth checking to possibly add to a list that could rule out symptoms. I am strong in-car knowledge however ATF behavior and issues are where I lack the knowledge.
I would also try doing another drain and refill on the transmission fluid, make sure to look at the magnet on the drain plug and note its collection, pay detail to see if there is any shiny metal flakes on it or in the fluid.
Sounds like it may be a sensor but again if it is not throwing a code and a drain refill doesn't help (it can never hurt) I am not sure where to look since you already said the 3rd and 4th gear pressure switches appear functional.

 

Yes, I have used using the manual trip tronic on the test runs and it will still lag to shift to the next gear and it when it does shift, it throws itself hard to the following gear. It does feel like it is a solenoid that is messed up. When I drained and filled last time they're were barely any metal shavings on the magnet plug. I guess I can try switching to synthetic tranny fluid to see what happens. My buddy who was helping diagnose the symptoms is very knowledgeable on transmission repairs and he tells me he believes that the main valve body might be clogged, or that the filter might be clogged, or a faulty torque converter. I just would like to double check and get other opinions before I take out the tranny and send it to my buddy to rebuild it.

 

At what gear did you floor the car? Was it before 36 mph or after?

 

After 30mph I believe. It just happens anytime I floor it.

 

I agree it sounds like a solenoid failing or sticking valve body. Does it not currently have Honda's DW-1 ATF Fluid in it?

 

yes I only used Honda DW1 fluid every time I changed the fluids

 

It is escaping me what sensors control it right now but I know this transmission waits between shifts till it sees a partial engagement before it completes the shift which is why having some friction modifier in the fluid helps as it helps show the computer and actually make the output shaft engage. Could it be possible the packs prematurely wore or just the TCM has a short or is not reading correctly. (Since it only happens when you floor it).
I would say have a dealer look at it if I didnt know they would just instantly say replace the whole transmission. I would however look for reputable transmission shops near you, ask if they give free quotes and have it looked at.

 

There are 4 solenoids like the ones in the video.. But 1 is for the torque converter. The other 3 are for shifting. I replaced all 4.

 

I have a 07 Tranny though. It's a different tranny from the 04-06.

 

You think maybe if I add friction modifier fluid it will help? And the only solenoid I'm thinking of is this one (part # 28250-RDK-014) which is $300. But not 100% sure I just don't want to throw a expensive part at it like that.

 

I would advise against it, the DW-1 has enough (more than most) friction modifier in it already. I believe those transmission fix bottles only mask issues or make them worse.
You said you replaced all three pressure switches?, where did you buy them from (trying to see if they were generic or not).

 

Which fluid would you recommend? Amsoil? And yes I replaced the pressure switches with the OEM ones. Bought them straight from the dealership.

 

Amsoil in these transmissions is guaranteed to be 100% incompatible. The ONLY ATF you should use in your transmission is Honda DW-1 or ATFs certified to be DW-1 compatible (such as the Idemitsu ATF Type H PLUS or Aisin ATF DW-1).

 

https://acurazine.com/forums/3g-tl-p...sensor-912154/
https://acurazine.com/forums/3g-tl-p...sensor-730958/
Do you see these symptoms as well?

 

I actually had these symptoms about a couple of years ago and I replaced the Accelerator Sensor and it solved that problem. I actually thought it could've been this piece again but I wouldn't think it would malfunction that quickly. And yes when I bought the accelerator sensor I bought it straight from Acura.

 

Every time I did a drain and fill I used Honda DW-1. But a lot of guys I've seen used Amsoil with No problem tho.

 

Don't believe it. The quality of the base oil in ATF is of minor importance when it comes to automatic transmission operation, however, what is VERY important is the Coefficient of Friction (CoF) of the fluid. Given every manufacturer designs their transmissions to a specific CoF and makes or specs their ATFs accordingly, there is no way in the world one ATF is good for all applications. The thing about CoF is, if the ATF is too slippery, the clutches do not engage quickly enough and accelerated clutch wear is the result. On the other hand, if the ATF isn't slippery enough, then the clutches will grab too quickly and transmit undue shock and stress throughout the transmission and drivetrain, and will also result an premature failures of the transmission.

Just because some idiot believes the marketing hype of Scamzoil and puts that ATF in their car and then drives it for a few thousand miles and calls it "good", does not in any way mean that ATF is good for the transmission.

 

horseshoez, since you know this auto trans so well, care to comment on this thread? Because I noticed you were not in that debate and "I Hate Cars" and "Inaccurate" aren't here anymore to make you angry. Plenty of people did a mixture of racing ATF with DW-1 and I read this entire thread years ago. I'm not even proposing on doing this and Valvoline MaxLife is nowhere close as being a racing ATF. I'd like to hear you lab test results.

https://acurazine.com/forums/third-g...ng-atf-834299/

 

I remember reading that thread a couple of years back. If I recall correctly, it is full of anecdotal reports of the things folks have done; nothing which proves anything.

Just to level set everybody, my comments are all in relation to one of the many flavors of Honda's H5 transmissions which are still factory spec. If the transmission has been remanufactured with non-OEM parts (especially, but not limited to clutch material), then all bets are off. In cases like that, the manufacturer of the clutch packs may well have designed their friction material to work best with DW-1, MaxLife, Scamzoil, or any of the other ATF they happen to choose. Said another way, I would adhere to the ATF selection the clutch packs were designed for.

 

Where were theirs?
The claims of companies with graphs made by people who make money by doing such a thing?