2002 C70 Transmission bumping, harsh shifting

goldmandan · Post by **goldmandan** » 30 Jul 2015, 16:53

I wanted to ask a question, has anyone ever used Lucas/Rislone anti slip transmission additives in 1998- NON GM transmissions? I am working on a C70 . It had a problem with oil getting in the coolant (and vice versa) from a bad oil cooler. That I solved but am now working on the harsh shifting of the transmission. I notice that when the engine is cold/cool it shifts ok....... I drained and put new trans fluid (Toyota T-IV) and reset the "gear oil service" with my scanner. I am wondering if the transmission needs to run a bit to reset the adaptations or if there's something really wrong with the trans? I monitored the solenoids with the scanner as i was driving, as I put it in Drive, the 3 first solenoids are active, once I start driving the 3rd solenoid is the only one active. Then when I get up to speed (30-40mph) then the 4th solenoid becomes active. I cannot get the 5th one active since I cannot get up to 50+ on my test drives so far any insight? Also when I slow down to about 5-10mph it gears down hard, almost like a manual letting go the clutch in 1st. Another thing I am wondering is if there are other "sensors" that may be triggering the transmission to react like this, A coolant temp sensor or other temp related sensor as I have no transmission codes at all and no engine codes either.

Post by **JRL** » 30 Jul 2015, 17:11

If the oil got in there, it's probably toast or at best it needs a new valvebody.

Post by **oragex** » 30 Jul 2015, 17:32

The only occurrence I've seen in forums when someone mentioned having used Lucas additive in a GM transmission he said it was working well. For how long no one knows. Have you flushed all 7liters or so of the contaminated transmission fluid? Were the issues there before the oil mix-up? As mentioned, perhaps a new or even used valve body might be a good starting point.

Post by **RussB** » 30 Jul 2015, 18:29

Just to be clear, you got engine coolant in your transmission due to a failed transmission cooler, which is part of the radiator...correct?

goldmandan · Post by **goldmandan** » 30 Jul 2015, 20:13

Sorry for the confusion guys. The oil in the coolant was a separate issue, that was the oil cooler that is bolted to the oil pan of the engine. There was never any water in the transmission or any engine oil. The radiator from what I can tell is ok, the oil that I drained out was "medium" red, not even dark and it was see through. I did notice it was slightly above the full mark though on the dipstick (which was broken off inside the filler tube, I replaced it with a new one and took out the broken piece). I am just puzzled with the reaction of the transmission. When the car is cold it shifts acceptable. When engine warms up is when it starts acting up. I am almost thinking it has something to do with the cooling system. I hooked up my scanner and took it for a ride and saw the temp hovering between 206-226 in the 100 degree Florida weather we are having. I did notice loss of coolant and heard it hissing at the cap, It's an old cap and i've ordered a new one already. I will also be changing the upper and lower rad hoses. I have changed the one from the back of the head to the reservoir and from reservoir to radiator (overflow hose), I have changed the thermostat also with a new one and have added 50/50 mixed antifreeze instead of the pure water the previous owner had in it. Luckily I caught the coolant in engine oil before it got bad, I flushed the engine with Seafoam and changed the oil 2 times already since I fixed the leak. I am stumped about the transmission though..... if anyone has any ideas.......... i've read about software updates......... would a trans that didn't have the update buck and jerk and have harsh shifting? Again, there are NO codes coming up on the TCM or ECM regarding the trans............. Any expert help would be great!

Dan

goldmandan · Post by **goldmandan** » 30 Jul 2015, 20:18

oh, one thing I missed, I drained 4 liters out of the transmission. I took the fuel pump/ignition fuse out and cranked the engine with the drain plug removed to get out as much as I could. I was planning to drain out another 4 liters tomorrow and fill 4 liters in again....... do you think that would do it?

Post by **FLXC90** » 31 Jul 2015, 07:24

Don't crank the motor with the plug out to drain trans, you can end up sucking in air causing the fluid to foam. See the drain and fill videos linked in the forum and all around the web.

How long have you owned the car? Do you know which software updates are installed? What other preventive/proactive work has been done, like B4 solenoid cover, you don't mention shift flare so I wouldn't suspect it right now, but maybe in the future. Is that what you mean by hard shifts?

Seafoam makes a transmission product also. Maybe try adding that or the Lucas/Rislone for a week or two, then draining and filling again.

As for your 2-1 clunk, see threads for the trans in the repair database. What scanner are you watching your solenoids etc with VIDA, torque...? Sounds like they are acting appropriately though.

(pm sent)

Post by **tryingbe** » 31 Jul 2015, 08:02

May or may not apply. Doesn't hurt to try, I suppose.

A/T - AW55-50 Hard Shifts/Shift Flare

NO: 43-27

DATE: 1-22-2004
MODEL/YEAR:
MY 2001- S60, V70, V70 XC, XC90 2.5T

SUBJECT:
AW55-50 Adaptation Procedure

CHASSIS:
All

Reference:
For all other cars with the AW 55-50, please see TNN 43-20

THIS TNN SUPERCEDES THE PREVIOUS TNN 43-27 DATED 7-15-02. PLEASE UPDATE YOUR FILES. Updated for XC90 2.5T

DESCRIPTION:

The AW55-50 gearbox relies on adaptive data to properly adjust its shift pressure. This data is collected and memorized by the TCM and then used to adjust shift feel/quality. If the adaptation is not complete, it may result in:
- Shift Flare: Engine RPM increases during a shift. This symptom often feels like the car has temporarily lost drive or the transmission is slipping. It is usually the 2-3 upshift that flares the most.

- Harsh Down Shifts: Harshness felt during a coast-down shift (zero throttle downshift).

- Harsh Garage Shifts: Harshness when shifting P-D, N-D, P-R, or N-R while at a standstill.

- Harsh Neutral Control Engagement/Disengagement: After coming to a complete stop in Drive, with your foot on the brake the TCM waits 2 seconds and then disengages drive to reduce emissions and minimize idle vibrations. This disengagement is normally smooth and isn't felt by the driver. If adaptation is not complete then a "thud" can be felt in the car 2 seconds after coming to a complete stop. When the brake pedal is released, the re-engagement of Drive should be relatively smooth. A harsh re-engagement can be felt if the adaptation is not complete. Neutral Control is present on all 2001 MY S60s and V70s. It is also present on non-turbo 2002 S60s and V70s produced before January 2002.

The TCM can sometimes take many miles to fully adapt. To assist in the process, a function called "Control Module Adaptation" has been included in VADIS. This mode is useful when the car is new, the gearbox, valve body or TCM have been replaced, or anytime you want to be sure that the transmission is fully adapted. The picture shows where to find the function. There is no need to "Reset the adaptation to zero", unless a piece of hardware, such as the valve body or gearbox has been replaced.

ADAPTATION MODE:
When you follow the procedure, you will first be directed to check which software version is in the TCM. This is because some cars need to be loaded with the latest software for the function to work (Please refer to
TNN 43-24). Once you have checked the software, you will be directed to the procedure. After reading through the procedure and using VADIS to put the car into Adaptation Mode, you can begin the adaptive test drive.

When the transmission oil reaches 65̊Celsius (150̊F.) a text message will appear in the DIM to confirm that you are in Adaptation Mode. It will remain in this mode until the car is shut off. If the transmission oil temperature exceeds 110̊Celsius (230̊F.), Adaptation Mode will be suspended and the text message will disappear until the temperature comes down.

The transmission does not adapt while in Geartronic or Winter mode; do not use those modes at any point in this procedure. While the car is in Adaptation Mode the orange triangle in the center of the instrument cluster (DIM) will flash just after a "perfect shift". A perfect shift is one where the TCM has reached its adaptation target for that particular shift.

To adapt the Upshifts:
1. Use 'D' range. The TCM does not adapt while in Geartronic. From a standstill, accelerate lightly (about 1400 RPM) up to 4th gear. Keep the throttle steady during the acceleration. Come to a stop and repeat this maneuver until the orange triangle flashes after each of the three shifts. It may take several accelerations to complete this. You will not reach 5th gear at this small throttle opening.

2. Perform another steady acceleration, all the way up to 5th gear. This time use a higher throttle position (about 1800 RPM). Repeat the maneuver until you see the orange triangle flash after each of the four shifts. Remember to keep the throttle steady.

3. Again accelerate up to 5th gear from a standstill; this time at an even high throttle opening (about 2500 RPM). Repeat the maneuver until you see the orange triangle flash after each of the four shifts. Remember to keep the throttle steady.

NOTE: The TCM is continuously adapting. Not every shift will be a "perfect shift". For example, you will not see the triangle flash after every 1-2 shift. You only need to see it flash once for the 1-2 shift at each throttle opening to know that the adaptation has reached its target.

To adapt the Downshifts:
1. Use 'D' range. The TCM does not adapt in Geartronic. Drive along at about 45 MPH in 5th gear. Release the throttle and gently brake until you are at a standstill. Use very light pressure on the brake pedal.

2. Repeat this maneuver until the orange triangle flashes after each of the four downshifts. It will take several decelerations to adapt all of the shifts. If you are having difficulty, increase or decrease the pedal pressure you are using.

NOTE: The TCM is continuously adapting. Not every shift will be a "perfect shift". For example, you will not see the triangle flash after every 3-2 shift. You only need to see it flash once for the 3-2 shift during this maneuver to know that it has reached its target.

To adapt the Garage Shifts:
1. With the engine idling and your foot on the brake, shift to 'N'. Wait 5 seconds; shift to 'R'. Wait 5 seconds and shift back to 'N'. The adaptation has reached its target when the orange triangle flashes after you shift to 'R'. If the triangle flashes once, you do not need to see it every time after that. This is because the TCM is continuously adapting.

2. With the engine idling and your foot on the brake, shift to 'N'. Wait 5 seconds; shift to 'D'. Wait 5 seconds and shift back to 'N'. The adaptation has reached its target when the orange triangle flashes after you shift to 'D'. If the triangle flashes once, you do not need to see it every time after that. This is because the TCM is continuously adapting.

To adapt the Neutral Control:
NOTE: This only applies to certain cars. They are listed in the "Description" section of this document.

1. Drive along slowly (about 5 MPH) in 'D' range. Gently bring the car to a complete stop. Repeat this maneuver until the orange triangle flashes a few seconds after you stop the vehicle. This tells you that the Neutral Control engagement is adapted.

2. With the engine idling and your foot on the brake, shift to 'D' range. Wait about 25 seconds and you will see the orange triangle flash, telling you it is ready to adapt. After it has flashed, release the brake pedal and allow the car to crawl forward. Repeat this maneuver until the triangle flashes just after releasing the brake pedal. This tells you that the Neutral Control disengagement is adapted.

NOTE: The TCM is continuously adapting. Not every shift will be a "perfect shift". For example, you will not see the triangle flash every time you release the brake pedal. You only need to see it flash once to know that the neutral control adaptation has reached its target.

Once you have adapted the Upshifts, Downshifts, Garage Shifts and Neutral Control, the procedure is complete. When the ignition is switched off, the TCM automatically exits adaptation mode.

goldmandan · Post by **goldmandan** » 31 Jul 2015, 12:59

Thanks for the heads up guys. I Love this forum! I have been restoring classic American cars for almost 30 years and I have recently started working on older volvos 1990's-early 2000s. I am part Swedish so I have to be partisan to Volvo

I really like the straight forward engineering that Volvo uses, very similar to the old American cars. Making most things accessible and a lot easier to work on than Japanese cars for example. I am using an Autel Maxisys Pro to look at the shifting information. I also do have Vida on another laptop. Will the Vida program let me do transmission adaptation without having to pay for subscription? Is this a feature that is available from the Vida program? Please let me know as I was thinking to run a diagnostic on the transmission to see if anything comes up that my Autel cannot pick up.

goldmandan · Post by **goldmandan** » 31 Jul 2015, 13:03

Yes, shift flares are present, mostly from 2-3 sometimes from 1-2 but not often. I have just purchased this car. I've had a few c70's of this vintage but most of them with the 2.4 lpt. This is the first with 2.3 hpt and I am impressed with the performance out of the engine. Just a bummer this thing with the transmission.......... I am not sure what software updates have been done and am not aware what B4 Servo cover is. I have so far only drained and filled 4 liters of fluid and replaced with Toyota T-IV fluid from the Toyota dealer as I heard this is the same stuff Volvo uses but is cheaper to buy from Toyota.