Bardissimo

Yesterday i have done subj. Myne is 2000 rpm, 73000 mileage.
According to service manual:

Specification 2400 rpm.
Service Limit 2250 - 2550 rpm.

If the measurements are out of the serice limit problems and probable causes are listed in the table:

1) Engine output low
2) Engine throttle valve closed
3) Torque converter one-way clutch slipping.

So i`am in a bad mood. Of course i`ll
clean the intake, change all oil. But i`am not sure that it will help....

Any one had this problems ?

thunder04

iTrader: (1)

Forgive me for my stupidness, but what is a "stall speed test"?

LukeaTron

The stall speed is how fast the engine needs to be turning before torque converter transfers power to the wheels. Below that RPM the converter "slips" and the car doesn't move forward. Higher stall speed converters are less comfortable for daily driving but are more efficient and generally feel more solid.

Have you checked the ATF level? That will have a huge effect if it's low.

thunder04

iTrader: (1)

D'oh! I knew that.

Bardissimo

Well it seems that the level is o.k.
I have done it according to manual.
I warm the engine until the fan goes on, then i shut down the engine.
I get the dipstick, the i wipe the dipstick, insert it, then remove it. The accumulation
of an oil (an oil drop) is below the lowest mark, but the whole dipstick from lower to upper part is covered by oil film.

Btw what does it mean "between"? It should be in the middle lower-high mark?
Or it should just not be higher the high mark?

Bardissimo

Well it seems that the level is o.k.
I have done it according to manual.
I warm the engine until the fan goes on, then i shut down the engine.
I get the dipstick, then i wipe the dipstick, insert it, then remove it. The accumulation
of an oil (an oil drop) is below the lowest mark, but the whole dipstick from lower to upper part is covered by oil film.

According to manual the "ok" level is between the upper mark and the lower mark.

Btw what does it mean "between"? It should be in the middle lower-high mark?
Or it should just not be higher then the high mark?

poltergeist

Of course the first question is, do you have a problem or are you just concerned that it doesn't match the spec?

Can't speak for the TSX but the last time I was at Honda school they had me do a stall speed test on a Fit. I was a little surprised that it was "out of spec" until the instuctor told me the service manual was misprinted.

If you don't have any driveability issue I wouldn't be overly concerned about it.

nbtx

The stall speed of a torque convertor is the engine rpm at full throttle with the car not moving. A higher stall speed convertor is less efficient because it is absorbing energy before the car begins moving. A torque convertor is always transferring torque to the transmission - the amount depends on the engine speed.

ccoffe

ilikeyourarticleverymuch。

LukeaTron

^^^ Uh, what?

LukeaTron

I don't quite follow you. Your saying it's how high the engine will rev when you mash on the gas and brake at the same time? That doesn't make much sense so I must be misreading you. Can you explain more clearly please?

Bardissimo

Well first of all my car does not goes faster then 130 mp/h. I started to check what can be a problem. I`ve done a stall test, now i`am concerned about two points of disappointment.

Well i`d be happy to know about misprint. But 400 rpm is too more than misprint.

LukeaTron

The car's top speed is electronically governed somewhere in the neighborhood of 130 mph. Perhaps some one could indicate the exact figure?

Are you having driveability issues with the car?

Bardissimo

You mean that all TSX`s are limited to 130 mp/h ?
Btw the electronic limitations work in another way, the car drops rev. But my does not drop it, it just does not rev longer...

Pardon me, but what do you mean ?

jmathew34

nbtx

Look at post #8 above. My description is factual and disputes what you said. Be more specific about what you don't understand and maybe I can help.

nbtx

To Bardissimo:

Has the performance of your vehicle dropped off because it won't go faster than 130 mph anymore and you're testing the engine output by doing a stall test? If so, that's not a very reliable indicator of engine health. Better you check compression by doing a leakdown test, replace the spark plugs (or at least examine the ones in the engine), and do whatever test you have at your disposal on the ignition coils. Next, check fuel pressure at idle and under sustained load - maybe even at top speed if you have the nerve ! Good luck.

And I don't think the USA-spec TSX is speed limited; I've heard of 135 or slightly more for a stock one. Not sure about the European ones though.

LukeaTron

That reply was to a nonsensical post left by some spammer which has since been deleted. I wasn't trying to be an ass. The second reply where I quoted your post was the only one directed at you.

I don't understand your description of stall speed.

Bardissimo

I live in Russia, i`am Russian, i bought and imported an American TSX. So it should not have any limits, but you say that it should not run faster than 135?

nbtx

Learn more than you need to know ...

http://www.chevyhiperformance.com/te...yno/index.html

http://www.protorque.com/techi/ti_faq.htm

http://bankspower.com/Tech_understandstallspeed.

nbtx

One other possibility for diminished performance would be fuel quality. Can you get gas with an equivalent of USA 91 octane? If your fuel has lower octane, performance will suffer.

poltergeist

Not sure where you got your stall speed specs, but the one's in my '04 Acura Service Manual state:

Specification: 2000 RPM
Service Limit: 1850-2150 RPM

Bardissimo

Man, are you sure ? From wich source you know this limits?

Tomorrow i`ll make a screenshot of a stall speed test from my service manual.

poltergeist

"Standards and Service limits" page 2-9 and again in the Auto Trans section on page 14-188 under "Stall Speed Test".

davidspalding

Sorry, I can't read "stall speed" without thinking of the aviation definition, and wonder at what speed the TSX loses aerodynamic lift and loses altitude.

Bardissimo

My friend bought me a service manual in http://www.handaaccessories.com/
This manual is for 04-07 TSX, manual is dated 2006.
This is how it looks like



Here are photos of stall test page:

Bardissimo

Yesterday we have changed the whole oil in a AT,
used 9 liters to wash out all old oil.

poltergeist

Well mine's a '04 only edition, but as mentioned before I'd bet one or the other is misprinted.


Either way, I doubt that this is the cause of your "problem."

Bardissimo

Well not sure were is a misprint, but in this manual http://www.redliners.ru/manuals/Acura%20TSX.zip
also spec is 2000 rpm.