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[the nutter]

hi can anymore can help me ,  i have just done a engine change on a R reg 2.5 v6 petrol elite estate it drives ok using 1 2 3 but when in drive it goes into limb home mode  and it has come up with a fault code  p 1740 touque controll circuit low imput and i have put it on a computer to find out what the fault was but wont clear the fault any ideas on what this means and how to sort

[tunnie]

whats the millage on your 2.5TD?

The standard fit autoboxes (AR25) don't last much past 120k

Needs the stonger AR35 box fitted which was on 3.0/3.2 Omegas.

[mkaminski100]

It's not the box, it's the engine - don't you have any problems with power?
Friend of mine had same code and we started looking for engine fault - we found that sparkplugs were covered in oil (2.0 petrol). New rocker cover seal fixed the gearbox problem!! You may have different problem with your engine power, but I dont know anything about Diesels and cant really help.
There isnt't enought torque (power) from the engine and you get the code. No engine codes?

[TheBoy]

Get engine codes read (some TDs are paperclippable)

[dbug]

whats the millage on your 2.5TD?

The standard fit autoboxes (AR25) don't last much past 120k

Needs the stonger AR35 box fitted which was on 3.0/3.2 Omegas.

Wrong car!?? - i have just done a engine change on a R reg 2.5 v6 petrol elite estate it drives ok using 1 2 3 but when in drive it goes into limb home mode  and it has come up with a fault code  p 1740

[TheBoy]

whats the millage on your 2.5TD?

The standard fit autoboxes (AR25) don't last much past 120k

Needs the stonger AR35 box fitted which was on 3.0/3.2 Omegas.

Wrong car!?? - i have just done a engine change on a R reg 2.5 v6 petrol elite estate it drives ok using 1 2 3 but when in drive it goes into limb home mode  and it has come up with a fault code  p 1740

td ar25 issue is mechanical anyway...

[mkaminski100]

I just looked at your details and there’s still “TD”. Anyway – check your spakrplugs.

[TheBoy]

I just looked at your details and there’s still “TD”. Anyway – check your spakrplugs.

Eh? Sparkplugs? They wouldn't cause the engine ECU to put the gearbox in limp  :-/

[mkaminski100]

I just looked at your details and there’s still “TD”. Anyway – check your spakrplugs.

Eh? Sparkplugs? They wouldn't cause the engine ECU to put the gearbox in limp  :-/

Well, he can start from the gearbox. All I am saying is that I had a friend with same fault code and after cleaning sparks from oil, problems disappeared. Oil caused ignition problems and TC didn’t have enough “power” – pump wasn’t creating proper pressure and there was a slippage on the “clutch”.
touque controll circuit low imput – sond like low input, so might be a pump, but might be engine.
Second thought is TC itself. You said that the engine was swapped – did you changed TC as well? AS far as I  remember TD have different from V6. This also might be a cause!!BTW – Yesterday I have unplugged MAF sensor on running  2.2 and had an “Automatic Gearbox” few seconds after !! I will try to do it again today.

[Marks DTM Calib]

When you did the engine change, did you swap just the block or the entire loom.....was the donor from a manual?

[the nutter]

When you did the engine change, did you swap just the block or the entire loom.....was the donor from a manual?

the engine change i done was a petrol 2.5 v6 elite and not my td as thats running sweet , i got the 2.5 v6 as a non runner as it had dropped a piston and the cheaper option was change engine and it runs fine untill u put in drive then it locks itself in snow mode and sports mode is not working either any ideas  i put it on computer and the only code it come up with was toque converter low imput and it wont remove it from stored fault codes  

[TheBoy]

When you did the engine change, did you swap just the block or the entire loom.....was the donor from a manual?

the engine change i done was a petrol 2.5 v6 elite and not my td as thats running sweet , i got the 2.5 v6 as a non runner as it had dropped a piston and the cheaper option was change engine and it runs fine untill u put in drive then it locks itself in snow mode and sports mode is not working either any ideas  i put it on computer and the only code it come up with was toque converter low imput and it wont remove it from stored fault codes  

Was donor engine from auto or manual, and was it just engine, or loom as well?