Thanks Shane.

 

I think the idea is that from cold they learn the fuel trims etc from cold right through to being warmed up. To with the injectors etc behaving differently when cold and warm. This is what I was once told anyway - could be a load of garbage but it seemed to make a little sense when i thought about it. To be fair, as above I've done it hot and cold and couldn't notice the difference!

 

After coding the learnt fuel settings are reset so as above the plan is that the initial learnings should cover the full temperature range.

There is no need to wait for a cold engine before re-coding but the first start-up following there-coding and initial driving should be from cold.

Peter

 

coding of injectors wheather ford or other shuld be done cold first to satisfy fuel map requirements for optimum benefit when re-coding . i dont see the reason to question this simple basic requirement as with all motor s even petrol . when setting fueling setup on motor its always better start form a cold engine platform . we would require in some instances that a motor be left in the garage overnight so the fueling could be reset from cold .as just like on a petrol . the ct will have a much higher readout once the engine is run . even for twenty minutes . it is impossible for the coding to be satisfied for a cold start . situation unless the egine is really cold . and this means stationry for up to four hours . after being run for 1to 2 hours . and this in preference to the customer coming back in a few days complaonig about starup problems and rough running .one of the most common complaints when injector s have been recoded badly or wrongly . and by the way there is little benefit in recoding or coding faulty injectors in the first place,.s

 

Done them hot and cold on my own and lots of other mondeos never had a issue.
Why are you recoding anyway
And to be honest I dont think f super actually codes properly even if it reads new codes and says it has as I have not come across anyone that has coded out a high knock error and ive coded after fsuper with fordiag and cars run smoother and less knocky even on very late cars.

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OK people CALM down, CALM down. LOL :stir:

I dont know enough to comment only to say that it might be saying code from COLD to just make a garage a few extra quid as the car would be in overnight and that MAY meen more cost!!!! Im not sure to be honest... I cant see a main stealer locking your car up in the workshop all night. I would put money on it, that they will just leave it outside and then in the morning go to it, move it into the workshop then coding it, therefore they have started it to move it so that defeates the object.

But like I say I dont know anything different apart from following the meny guides on here.

NO worry's.

 

I did think at first that it should learn from cold but after doing loads wend hot never had anyone come back saying there cars running bad after.

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Excuse me for saying so but that lot looks like a load of bollox Without even the slightest bit of substance apart from your own gut feeling.
Ive done many and not had a single one back with the complaints you've had.

And coding is coding,that works at any temp,it's the fuel values that might be affected but again I've seen no adverse effects from the values being reset at any temperatures after all why would it when the fuel values relearn over quite a few miles which could entail several cold starts depending what the owner chooses to do.
Are you saying the only cold start it will consider is the first one? I don't see it that way and it's backed up by customers never reporting back with issues related to not being cold when done. I would go as far as to say almost none I do are cold so if there were negatives it either isn't obvious or doesn't happen.

what was all that about lol

 

I have tried coding when engine was hot but had drivability issues engine was running poor not bad but poor, even after 50 miles of driving. I then recoded when cold and run car for 30 miles then run great and had better mpg and engine run smoother so now I will only code when stone cold. This is my own personal experience and not saying everyone will have same issue so not here to be shot down in flames if any doubt just code from cold


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We try not to use such colourful language on the forum as you well know .these fora are not just the the domain of men . .. I DONT REALLy care if you dont agree with my opinion and i know that as a comercial outfit . i.e MOBILE .diagnostics . you would have a vested interest in promoting the idea that . setting the injector codes or working on fuel map . on a vehicle can be achieved with success . at all temperatures . as the name suggest s mobile diagnostics . obviously you would not ever want some silly objective like having an engine cold . wnen setting codes of programming . HOW . would you for instance set a fuel map for a petrol passat . after fitting it with a new cold start system .. just bang it on and hope for the best . . or wait until the engine is cold and go through the boring proceedure of cold setting the map ... just to ensure the customer can go their motor on a cold dirty winter morning and confidently start their motor .. s

 

We try not to use such colourful language on the forum as you well know .these fora are not just the the domain of men . .. I DONT REALLy care if you dont agree with my opinion and i know that as a comercial outfit . i.e MOBILE .diagnostics . you would have a vested interest in promoting the idea that . setting the injector codes or working on fuel map . on a vehicle can be achieved with success . at all temperatures . as the name suggest s mobile diagnostics . obviously you would not ever want some silly objective like having an engine cold . wnen setting codes of programming . HOW . would you for instance set a fuel map for a petrol passat . after fitting it with a new cold start system .. just bang it on and hope for the best . . or wait until the engine is cold and go through the boring proceedure of cold setting the map ... just to ensure the customer can go their motor on a cold dirty winter morning and confidently start their motor .. s

IS this aimed at ME ?????

 

I code them cold, hot, upside down it all works the same