Well it behaves itself after the first 2 to 3 gear change.

The 1 to 2 gear change is fine then the first time it changes 2 to 3 it wants to rev to about 2,750 rpm, everything OK after that until it's cold again.

I've had my 2005 D5 for 7 months now. Now the honeymoon period is over i notice that mines a right arse (not difficult, but not smooth) to go into and out of P. Is this the design of the box. All other gears & changes are silk. Car has 78k miles. A;so would the box survive if i got it chipped?

AW 55-50 hard shifting
 

Hi Guys...

I've got an '04 C70 whose transmission has been shifting hard lately. Mostly on the down shift (decelleration), but now it's doing it on the up shift (accellerating).

AT fluid has recently been changed, but performance has not improved. Maintenance Manuals are not readily available either... (at a reasonable price).

Got any ideas to share?


R2

:pizza:

hi,
have you got any codes? dtc's present? it would be a good idea to start with that,.. if you dont get any try to observe if it gets worse while the engine has been driven for a long time /normal operating temp or does show up when it still cold or it doesnt matter both? also did it improve when you drained or flushed the transmission?

Someone offering help on the AW55, COOL.

Let's start off by saying: I'm not sure I HAVE the AW55, as the computerscreen at the Volvodealer showed "AW50/51" iirc.

Just ran outside and the box itself says on an "Aisian AW" sticker: 55-51
03LV706106
8675 147 (these two numbers are under eachother, therefor I placed a [space] between them).

Problem I have is a message in the dash reading : transmission service required (it's actually the Dutch version, so this is not literally what it says!)

Symptoms:
- the "D" in my display disappears and a 'minus-sign' takes its place,
- the power is (...even...) lower than normal, especially in getting rolling/getting off the line
- I am missing 5th gear,
- the geartronic manual function is not available anymore and
- the cruise control indicator turns ON, but the function itself is not available.

When hooking up my recently acquired ODB reader I get P0748, "Pressure control Solenoid "A" electrical"
Also some other codes, but lets stick with the P0748 for now... :)

Any thoughts to what specific problem this is?
I want to check all connections of the solenoids (which one specifically?), but I do not know where to find them exactly, so help is appreciated (if needed I could remove the air-box this weekend?). I tried to have a look just now, and there appear to be some wires coming out of the box and connectors that are between the radiator and the air-box/EGR return elbow thinghy. May post a pic up later. (But beware I have a LHD, the (UK) description for changing the transmissionfluid I did 2 days ago called for the drainplug to be obscured by the rear-brakelines, but on my car they are nowhere near the drainplug :). This drain/flush with 14 liters is afaik not related to this issue, but had been planned since before the issue arose. The issue was there before and after.)

Someone linked this and I located the thinghy in the first pic that sticks out to the front of the car that seems like a cover. Is this where the solenoids are hiding? Can I simply unscrew this cover and the solenoids (apart from the 3 that are matched to the housing and should NEVER be removed according to this paper) and thus test them?

Help is VERY, VERY much appreciated!!!

http://img297.imageshack.us/img297/4...codesvolvo.jpg

One of the common issues with this box is the delay to engage drive. When cold it is almost instant ......... when hot, going from either reverse or neutral to drive has about a 2 or 3 second delay and the drive is taken up with a thump. However, when a restart is made (i.e engine off, engine on) then it will engage drive instantaneously (i.e. no noticeable delay). It could be a sticking solenoid, but the fact that it never occurs on a restart makes me think it is software related.

......... I think that this maybe something to do with the adaption settings and I keep meaning to have them reset when I have the time.

The delay issue causes no codes, no fail indication, and has been like it for the last 25K miles. I have changed the fluid and this made no difference. The car has done 76K

s60 with the same Deceleration hard shift at about 5 mph. Sometimes.
If i erase the "check engine" light it runs smooth. 90% of the time the s60 runs SMOOTH. sometimes it has the hard down shift.
2001 s60 base model non-turbo.

thanks from hawaii

aw 55-50 issues
 

Greetings all have a 2001 y plate V70 T5 AUTO not tiptronic , had in local auto trans specialist for a code read and oil change , only code was a slipping clutch sinse then drove only about 100-150 miles and now nothing .The car started to really struggle to get up a hill then when I thought it was ok again had total loss of drive .Had to get car recovered and is now sat on my drive. The car will start no problem and will on occassions go into all gears but only for a few seconds and then nothing . Any thoughts would be appreciated thanks Ian

Aw 55-50 sn
 

Hi you say you had the ATF changed recently what ATF did they use?
If you put anything but JWS 3309 spec ATF in these boxes it can cause serious problems.
Check your invoice or ask them quietly what they if they used Dextron you could have problems.

adaptive settings?
 

HI,

Thanks for that attachement on the AW55-50.

I have a 01B serial number? I have the exact symptoms below (lifted from the attached doc) - which have been intermittant which has led me to believe that this is electrical;

Description: This transmission relies on adaptive data to properly adjust the shift pressure. If the adaptation is not complete, it may result in one or more of the following:

• Harsh flare. Engine RPM will increase during a shift. This symptom feel like the transmission has lost drive. It usually happens during the 2-3 shift.
• Harsh down shift. Bumpy down shift when the gas pedal is odd (Zero).
• Harsh Garage shift. Sever bump when engaging forward or reverse from park or neutral.
• Harsh engagement control. After coming to a complete stop in drive, with the foot on the brake, the TCM waits for 2 seconds and then disengages drive to reduce emissions. This disengagement is not usually felt by the driver. If adaptation is not complete, then a “thud” will be felt. A harsh re-engagement will also be felt.

Any one got any advice? I will try to reset the adaptive settings, but unsure if this is all it will take, or whether this will re-occur.

ALso, I broke two of the orange rubber gasket seals on the electrical connectors from the Tranny when inspecting (to clean contacts and investigate). Any hints as to how to replace these - if needed?)

Was also wondering whether the B4 servo cover was easily replaced, or is it an engine out job?

Many thanks