Yet another gearbox thread
Posted: Thu Jan 21, 2016 4:41 pm
Hello guys, as you might know, I recently bought an Audi RS6.
The car has a gearbox problem that's not very common I think. I found this thread in which the owner (sheffielder)had similar symptoms.
viewtopic.php?f=2&t=107180&start=0
But he didn't explain what fixed it, except the amount of money he'd spent.
Here is what I experience.
The car drives fine when you don't push it too hard. When you push it hard, the gearbox gets confused on which gear it should choose...
For example, if you go slowly after a stop and then decide to push it, the car downshifts all the way to first gear and immediatly puts second gear (assuming it was in 3rd gear). It's like it didn't know it shouldn't have gone to 1st gear, but went anyway ...
When I'd get the car out of the garage, (pretty agressive uphill), if I don't do it in one shot, it's like the transimission disangages. Sometimes, it goes into limp mode (all letters illuminated) and sometimes it doesn't ...
Here are the codes the transmission throws :
17125 - Torque Converter Clutch
P0741 - 35-00 - Stuck OFF / No Power being transferred
17114 - Gear Ratio Monitoring
P0730 - 35-10 - Incorrect Gear Ratio - Intermittent
I can hear a whining noise at low revs. I thought this was the transmission oil pump starving oil. I decided to buy some oil and check the level follwing this procedure :
http://www.thectsc.com/5hp24a-transmiss ... procedures
I opened arround 36° and no oil came from the transmission, so I thought that it was missing some oil. I shut down the car so theat the oil doesn't warm up and goes above 40°. Problem is that when I did this, some oil started to come out. I immiediatly started the engine again and put the fil cap back on. I shut the car again to prepare myself to fill oil in. Then when ready, I started the car again, opened the fill plug, (noil came out) and filled about 1 litre, until overflow (engine still runing). Then I put the fill plug back in. I took the car down, and went for a test drive. Garage uphill, no limp mode, but the geard disangaged. I'd say I felt a slight change, but I don't know really ...
Anyway, I drove the car arround for a bit, and when I got home, I checked the transmission's fault codes. Surprise !!! Nothing !!!
I have to let you know that I have an ABS problem as well :
00283 - ABS Wheel Speed Sensor; Front Left (G47)
30-00 - Open or Short to Plus
01435 - Brake Pressure Sensor 1 (G201)
48-00 - Supply voltage
01119 - Gear Recognition Signal
35-10 - - - Intermittent
In ECU :
16885 - Vehicle Speed Sensor
P0501 - 004 - Implausible Signal - MIL ON
17535 - Fuel Trim; Bank 1 (Mult)
P1127 - 002 - System too Rich - Intermittent
17537 - Fuel Trim; Bank 2 (Mult)
P1129 - 002 - System too Rich - Intermittent
17482 - Mass Air Flow Sensor 2 (G246)
P1074 - 001 - Signal too High - Intermittent
These are the codes that come back. I don't have access to some modules in the car, like central locks, navi, HVAC ...
About the ABS, I didn't do anything. I thought about cleaning the ABS sensor and maybe switch it with the one on the other side. To be honest I don't want to buy a sensor, if I'm not sure, the problem comes from it, they are soooo expensive !!! Plus I've read many times, that it could be a ABS module problem !!!
About the sensor, the original reference is 4B0927803E Cheapest I could find is this one : https://www.fcpeuro.com/products/audi-a ... 4b0927803e
This one looks similar but has another part number : http://www.ebay.de/itm/ABS-Sensor-Drehz ... Sw5ZBWKcZq
What about this one ?
http://www.ebay.de/itm/ABS-SENSOR-VORNE ... dFhDvwCNEA
Seems to be the same as the previous one, but with different connectors, even though it's listed for the same cars ...
I don't mind taking one with different connectors and swap them, as long as I save a lot of money !!!
Thank you guys for helpin me out !!!
The car has a gearbox problem that's not very common I think. I found this thread in which the owner (sheffielder)had similar symptoms.
viewtopic.php?f=2&t=107180&start=0
But he didn't explain what fixed it, except the amount of money he'd spent.
Here is what I experience.
The car drives fine when you don't push it too hard. When you push it hard, the gearbox gets confused on which gear it should choose...
For example, if you go slowly after a stop and then decide to push it, the car downshifts all the way to first gear and immediatly puts second gear (assuming it was in 3rd gear). It's like it didn't know it shouldn't have gone to 1st gear, but went anyway ...
When I'd get the car out of the garage, (pretty agressive uphill), if I don't do it in one shot, it's like the transimission disangages. Sometimes, it goes into limp mode (all letters illuminated) and sometimes it doesn't ...
Here are the codes the transmission throws :
17125 - Torque Converter Clutch
P0741 - 35-00 - Stuck OFF / No Power being transferred
17114 - Gear Ratio Monitoring
P0730 - 35-10 - Incorrect Gear Ratio - Intermittent
I can hear a whining noise at low revs. I thought this was the transmission oil pump starving oil. I decided to buy some oil and check the level follwing this procedure :
http://www.thectsc.com/5hp24a-transmiss ... procedures
I opened arround 36° and no oil came from the transmission, so I thought that it was missing some oil. I shut down the car so theat the oil doesn't warm up and goes above 40°. Problem is that when I did this, some oil started to come out. I immiediatly started the engine again and put the fil cap back on. I shut the car again to prepare myself to fill oil in. Then when ready, I started the car again, opened the fill plug, (noil came out) and filled about 1 litre, until overflow (engine still runing). Then I put the fill plug back in. I took the car down, and went for a test drive. Garage uphill, no limp mode, but the geard disangaged. I'd say I felt a slight change, but I don't know really ...
Anyway, I drove the car arround for a bit, and when I got home, I checked the transmission's fault codes. Surprise !!! Nothing !!!
I have to let you know that I have an ABS problem as well :
00283 - ABS Wheel Speed Sensor; Front Left (G47)
30-00 - Open or Short to Plus
01435 - Brake Pressure Sensor 1 (G201)
48-00 - Supply voltage
01119 - Gear Recognition Signal
35-10 - - - Intermittent
In ECU :
16885 - Vehicle Speed Sensor
P0501 - 004 - Implausible Signal - MIL ON
17535 - Fuel Trim; Bank 1 (Mult)
P1127 - 002 - System too Rich - Intermittent
17537 - Fuel Trim; Bank 2 (Mult)
P1129 - 002 - System too Rich - Intermittent
17482 - Mass Air Flow Sensor 2 (G246)
P1074 - 001 - Signal too High - Intermittent
These are the codes that come back. I don't have access to some modules in the car, like central locks, navi, HVAC ...
About the ABS, I didn't do anything. I thought about cleaning the ABS sensor and maybe switch it with the one on the other side. To be honest I don't want to buy a sensor, if I'm not sure, the problem comes from it, they are soooo expensive !!! Plus I've read many times, that it could be a ABS module problem !!!
About the sensor, the original reference is 4B0927803E Cheapest I could find is this one : https://www.fcpeuro.com/products/audi-a ... 4b0927803e
This one looks similar but has another part number : http://www.ebay.de/itm/ABS-Sensor-Drehz ... Sw5ZBWKcZq
What about this one ?
http://www.ebay.de/itm/ABS-SENSOR-VORNE ... dFhDvwCNEA
Seems to be the same as the previous one, but with different connectors, even though it's listed for the same cars ...
I don't mind taking one with different connectors and swap them, as long as I save a lot of money !!!
Thank you guys for helpin me out !!!