SwedeSpeed - Volvo Performance Forum banner
1 - 20 of 31 Posts

·
Registered
Joined
·
309 Posts
Discussion Starter · #1 ·
Guys,
I'm posting as I am at my wits and wallets end. I've owned a number of Volvo P2's with upwards of 250k+ miles with only minor issues. I bought an 2006 XC70 with 150k miles (June 2015). At the time, no transmission issues were detected/felt.. Fast forward 3 months later, I starting having downshift issues - I saw many forums with rough downshifts when hot for this model/year. I did tcm upgrade and total can bus upgrade - no change. I then installed a new volvo OEM valve body on the car ($700), No change.

Found local transmission shop, one my volvo Indy Mechanic recommended - On tear down, found locked/frozen sun/planetary gear and a differential with the splines about to shear (Looks like OEM seal was incorrectly installed causing gear's to not lubricate correctly). All new hard parts and clutch pack which I did NOT replace torque converter at this time. (With 6+ cars with original converters on 250k + miles didn't think it necessary)

Car then runs GREAT for 2 months. One evening home, I get the TCM-002F "Lock-up function slipping or not engaged". I understand this is a transmission Death code... go back to transmission shop - must be torque converter since it was not replaced originally.. ok I thought. Torque converter is replaced and same issue...

I've done much research and found a couple of things that seems to be same.
-When using cruise control (below TC lockup speed) and then accelerating does NOT exhibit the code.(Even when trans is hot)
-Upgrade TCM software to increase RPM/Time - (I think its +/- 200RPM in 12 seconds sets code)

I've now replaced the following:
-ETM (found thread stating that replacing tcm solved this code)
-Pedal position sensor
-MAF
-DetoxIT spray/contact cleaner(currently go through all connections and inspecting wire harnesses)

The transmission guy has gone through everything he and I can think of, and has reached out to some local volvo mechanics. They have said the following
-Upgrade TCM - I did this originally so I don't think this is the issue, but who knows ( I don't want to spend the 150$ on vida sub)
-Replace TCM - I find this highly unlikely..
-Bad ground


The only things left I can think of is :
-sending CEM for xemodex rebuild
-Swap in a used transmission (Trans guy is willing to try this, but if it doesn't solve the issue I am soo out of ideas)


If anyone has ideas, or even a VOLVO master tech that is great solving these issues somewhere near Sterling, VA (200 miles of 20164) I'm completely game. I've already got more money into the car than its worth so I really contemplating parting the car if I can't figure this transmission slip code. (18t turbo, 3" downpipe, Snabb intercooler/intake, new ball joints lower a-arms, 2" lift..etc)


Any ideas are greatly appreciated!
Tom
 

·
Registered
Joined
·
2,621 Posts
Seems like a lot of trouble shooting has been done. I've dealt with that fault many times while working at Volvo and at Independent. It is a death code. Something is slipping in the transmission. Best bet is either a used trans from a reputable reseller that comes with some type of warranty or a Reman unit from Volvo.

My only other thought is that maybe one of speed sensors is failing or was damaged in rebuild. You can replace those but they usually will toss a code like 0020-0024 output or input sensor.
 

·
Registered
Joined
·
63,543 Posts
If you want to get it to PA and leave it with me for a week or two, I'll bet between me, my guys and/or Keystone Volvo (I get a better labor rate than their retail customers do) we can figure it out especially if you type out exactly what's been done to date.
 

·
Registered
Joined
·
309 Posts
Discussion Starter · #4 ·
If you want to get it to PA and leave it with me for a week or two, I'll bet between me, my guys and/or Keystone Volvo (I get a better labor rate than their retail customers do) we can figure it out especially if you type out exactly what's been done to date.
JRL Sold.

Original complaint - Transmission hard downshift when hot
-Installed New valve body (sort of, S2 solenoid had to be swapped, possible was saturn) - No change.
-Transmission shop pulled transmission, found a missing seal which caused a lubrication failure which froze solid the underdrive planetary gear, and cause trouble on outside ring gear (Both were replaced new parts, I received old parts to confirm diagnosis)
-While replacing, the differential has sheared splines (like collar gears do) so went and replaced this too.
-Transmission back together, new 3309 fluid, AND new radiator - Car ran like new.

2 months later:
-Going 45mpg, TCM-002F Occurs. Can clear code, and doesn't occur until TC for overdrive - Easily reproducible.
-New Torque Converter (Wasn't replaced originally) - Same issue (Always when hot, and TC engages, error code comes up)
(Since obviously TQ was culprit at this time.. and when I had transmission out, this is when I added my extra's since I had lift time)

-Trouble/error still reproducible when hot and whenever TC needs to engage/disengage (IE, on cruise control, step accelerator to pass, error presents)
-Replaced ETM - ths ALMOST seemed to fix it.. symptoms did not present for a few trips. On 4th trip, once again easily reproduceable.
--What was VERY odd, during the time it seemed to work, coil #3 was isolated as bad (car was missing) - Coil was replaced with used coil before 4th trip.
-Replaced Pedal position sensor (This morning) - Same TCM-002F.

Wire harness has been inspected - seems to have broke some connections, - all fixed except a current exhaust cam open/short. (I think its on the hydraulic actuator)
-This error JUST appeared last weekend - maybe this is speed sensor???


----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------


Car may be a wash.. Like you said JRL, the most expensive Volvo is the cheapest one you buy.

$3500 for car, and $3500 for transmission and $1500 in parts.. So I don't want to put to much more money into it. My trans guy has had car for 3 months, and goes to it on his free time trying everything he can. He's offered to throw a used transmission in it for free - trying to solve the issue.
 

·
Registered
Joined
·
309 Posts
Discussion Starter · #5 ·
UPDATE:

Bought a used transmission with 67k miles from Erie and car has not been exhibiting the issue for almost a week now.

So - If you get trans build, make sure they are an aisin warner shop with an excellent warranty - Lesson learned - Used trans for me from now on (This is first transmission I've needed out of the 8 P2's owned.
 

·
Registered
Joined
·
2,621 Posts
Good to hear its better. If the fault didn't return after two test drives, its likely fixed.
Who is your Indy up there. I used to live in Reston and Sterling and worked at two different Euro Shops.
 

·
Registered
Joined
·
309 Posts
Discussion Starter · #7 ·
Good to hear its better. If the fault didn't return after two test drives, its likely fixed.
Who is your Indy up there. I used to live in Reston and Sterling and worked at two different Euro Shops.
Well.. Fault didn't return for 4 drive cycles after we replaced the throttle body with the first rebuilt transmission... Furthering our chase along electrical gremlins.

I've used AutoScandia occasional (on and off over the years).. I find them good, but overpriced... Charge same/more as the local Dealership it seems.

Don Beyer Sterling actually seems honest - VA inspection failed.. everything they said was bad, actually was bad - surprised since my wife was the one that originally got the inspection done.

I actually use a shop in Frederick, MD - University Volvo - They've been the best to me so far -
 

·
Registered
Joined
·
2,873 Posts
I'm curious how your trouble is going to pan out as I'm having the harsh downshift issues and am trying to formulate a plan of attack to deal with it.

My car is fresh to me as of only a couple weeks ago, so I don't know if I have any other faults going on get. I've scanned all systems for codes nearly every week, and thus far nothing has been set in the TCM, ECM, or anything useful.

Sent from my LGUS991 using Tapatalk
 

·
Registered
Joined
·
6,586 Posts
Same here. No TCM codes, only code that might have an impact is brake pedal sensor which is intermittent.
 

·
Registered
Joined
·
6,586 Posts
What scares me, is the OP installed a valve body to no change in symptoms.

Sent from my LGUS991 using Tapatalk
Yeah... And a 3k rebuild did nothing. Erie with a warranty or a super low mileage unit seems to be the way to go.
 

·
Registered
Joined
·
2,873 Posts
I'm going to give the valve body rebuilder I've used for years a call and see what they tell me. I had never heard of transmission issues on the TF80 in the Rs, but they helped me narrow that down and fix it quite quickly and 1 year past swap, the car continues to behave just fine.

I'm trying to not just replace the transmission for the sake of knowledge, and because if this is going to become an issue for these cars in the long run, I want to know what options there are to fix it.

I can't help but think our issues are in the valve body because when cold I can do an unscientific "shift test" where you shift between reverse and drive. If fluid pressures are behaving, there is a seamless transition from one gear to the next. If things aren't happy, such as when my transmission is warm, there is a harsh bump when performing the same test and a 1 to almost 2 second lag to engage.
 

·
Registered
Joined
·
309 Posts
Discussion Starter · #13 ·
I'm going to give the valve body rebuilder I've used for years a call and see what they tell me. I had never heard of transmission issues on the TF80 in the Rs, but they helped me narrow that down and fix it quite quickly and 1 year past swap, the car continues to behave just fine.

I'm trying to not just replace the transmission for the sake of knowledge, and because if this is going to become an issue for these cars in the long run, I want to know what options there are to fix it.

I can't help but think our issues are in the valve body because when cold I can do an unscientific "shift test" where you shift between reverse and drive. If fluid pressures are behaving, there is a seamless transition from one gear to the next. If things aren't happy, such as when my transmission is warm, there is a harsh bump when performing the same test and a 1 to almost 2 second lag to engage.
I'll have a oem valve body for sale soon, only 3k miles on it paid 700, sell 500 :)

One last large oil leak then I'll put some big miles on car/new used trans. Ha

Sent from my Nexus 5X using Tapatalk
 

·
Registered
Joined
·
2,873 Posts
I talked to my transmission specialist and he was of the opinion that the valve body is at fault. I will attempt to install one this weekend as the shifting is getting worse again. *fingers crossed*


I am going to put in a used valve body because I have a lot of them laying around and rarely see issue. It seems the cheapest way to eliminate a possibility.
 

·
Registered
Joined
·
309 Posts
Discussion Starter · #15 ·
I talked to my transmission specialist and he was of the opinion that the valve body is at fault. I will attempt to install one this weekend as the shifting is getting worse again. *fingers crossed*


I am going to put in a used valve body because I have a lot of them laying around and rarely see issue. It seems the cheapest way to eliminate a possibility.
My only tip, be careful about the 2x O rings between transmission and back of valve body.. If one of them moves or gets lost - no reverse....

And there are screw lengths differences depending on location of bolt on valve body..

Sent from my Nexus 5X using Tapatalk
 

·
Registered
Joined
·
6,586 Posts
Well I hate to bring up a dead thread but the jerky AW55 in our XC70 has decided now is the time to throw TCM-002F. Also seems it was tied to a loss of communication between the TCM and ECM... Obviously check the grounds first. Car drives 'ok' otherwise (it's a little jerky on the downshifts... I don't feel like doing a valve body, I'd rather swap the whole box)...
 

·
Registered
Joined
·
309 Posts
Discussion Starter · #17 ·
Well I hate to bring up a dead thread but the jerky AW55 in our XC70 has decided now is the time to throw TCM-002F. Also seems it was tied to a loss of communication between the TCM and ECM... Obviously check the grounds first. Car drives 'ok' otherwise (it's a little jerky on the downshifts... I don't feel like doing a valve body, I'd rather swap the whole box)...
I've got a new oem valve body if you want to try it :). It wasn't to bad to swap out...

Put an Erie trans in it and it's worked well since.

Sent from my Nexus 5X using Tapatalk
 

·
Registered
Joined
·
7 Posts
FYI: Valve body updated info.

I am lucky to live about 5 miles from ARD Lucky does all my work. He just worked out a deal where he can get Valve body's rebuilt in standard or HD versions the HD versions have machined sleeves to prevent the wear that causes most of the problems with these Transmissions. I had a standard installed in a 2003 XC70 and it drove like a new one after that. I have two 2000 "R's" I am going to have the HD versions installed in as those are keepers Well I may part with the Black one as I am getting too many R's around here "three" :)
 

·
Registered
Joined
·
345 Posts
I am lucky to live about 5 miles from ARD Lucky does all my work. He just worked out a deal where he can get Valve body's rebuilt in standard or HD versions the HD versions have machined sleeves to prevent the wear that causes most of the problems with these Transmissions. I had a standard installed in a 2003 XC70 and it drove like a new one after that. I have two 2000 "R's" I am going to have the HD versions installed in as those are keepers Well I may part with the Black one as I am getting too many R's around here "three" :)
How much does it cost for the HD version of the valve body? Do they send you an entirely new valve body?
 

·
Registered
Joined
·
7 Posts
ARD Pricing.

How much does it cost for the HD version of the valve body? Do they send you an entirely new valve body?
$850 with core $1100 without core.
 
1 - 20 of 31 Posts
Top