Erratic throttle response when cold

[HPsauce]

Originally Posted by HPsauce

limp mode!

Jumped in the car, started it and selected reverse (to back out of drive) maybe a tad quicker than normal.
Nothing immediate (usually selects and creeps back) so I "think" I squeezed the throttle pedal. After a second or so there was a bit of a clunk and it moved backwards.
Another clunk at the end of the reverse when I changed to Drive - not sure if it was as I moved into Neutral or into Drive.

Headed off and it was "sluggish" going up the hill.
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Ignition off, restarted after 5 seconds, all fine. Car drove totally normally from there on
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Haven't plugged laptop in yet.........

Same again today, I'm expecting the same codes as before.

The car had been sat unused for a couple of weeks prior to starting it today, maybe I should have let it idle briefly and get the fluids moving before selecting reverse?

[HPsauce]

Originally Posted by HPsauce

Same again today, I'm expecting the same codes as before.

And that's what I had:

The usual: 01119 - Gear Recognition Signal 35-10 - - - Intermittent
The expected: 17090 - Transmission Range Sensor (F125): Implausible Signal P0706 - 35-00 - -

[HPsauce]

I'm having this looked at, possibly replaced. This problem has been niggling at me for over 3 years and whilst I can't say that "money is no object" I do want it fixed!

Does anyone know (roughly) what the price of a NEW F125 switch is and how many hours labour by a garage (assuming Audi specialist who know what they are doing) the job will take?
(I know I can get a used one from our sponsors for about £100 so presumably a fair bit more than that new and the Audipages "amateur" swap took several hours)

[HPsauce]

Originally Posted by Adrian E

Be warned there's 2 types of switch with different plugs so order from TPS with VIN to make sure you get the right one. Costs about £150 IIRC and bit of hassle to fit as box needs to be dropped a little to access I think, so one exhaust pipe off from memory.

I've been told £900! And several hours labour.

[Adrian E]

Originally Posted by HPsauce

I've been told £900! And several hours labour.

I've left you a rambling voicemail!

[HPsauce]

Originally Posted by Adrian E

I've left you a rambling voicemail!

Thanks, got that. Minimal mobile reception where I am at present. Mines an FBG gearbox.

I've been told parts are on backorder as well, so I'm getting the car back tomorrow without that done, though I think they've checked and cleaned the plug, which was OK.

[HPsauce]

Originally Posted by HPsauce

I've been told parts are on backorder

I think they've got some part numbers mixed up, they should have these.
Thankfully Adrian has given me the right numbers (having had this done not so long ago) and I've passed them on.

The service managers description of the work corresponded with Adrian's description, so I think they have the right job, just an error in passing on the part number.

[steamship]

Originally Posted by HPsauce

I've been told £900! And several hours labour.

Was trying to find some info on this late last night, but only one I could find was related to a modern Audi (A6 Allroad), and the cost was around £700. Hoping they made a typo in the part number to come to that price!

[ainarssems]

It appears there are 2 possible switches depending on gearbox code, one with 8 pin plug about £350 and one with 10 pin plug about £180

[HPsauce]

It's the 10-pin for my FBG gearbox - 01L 919 821 B at £153.09 plus VAT.