Ralph Wiggum Moar Powar Babeh Lifetime Members 19,323 Member For: 19y 1m 25d Gender: Male Location: Perth Posted 28/07/06 11:52 PM Share Posted 28/07/06 11:52 PM What happens to the field coils in an alternator thats generating current when you remove the earth path..? Being an electronics technican you should know what happens when a magnetic field in a coil collapses....that voltage has to get back to earth some where..... Link to comment Share on other sites More sharing options...
ms700 Moderating Team 10,170 Member For: 21y 9m 17d Gender: Male Location: Sydney Posted 29/07/06 12:51 AM Share Posted 29/07/06 12:51 AM My car also has a un-erasable fault code, when I changed my instrument cluster from XR to FPV.It will always be there, it is unwipeable. Just like your klm reading. The speedo might say different, but the original kays will always be recorded in the ECU. something to keep a eye on when the ex taxi's come up for sale! And im guessing the new Edit code is the same style of code as my instrument cluster change code. Will always be there. No matter how many reflashes or disconnects you have. Link to comment Share on other sites More sharing options...
saleen Big Gun Donating Members 4,170 Member For: 22y 1m 7d Gender: Male Location: NSW Posted 29/07/06 01:22 AM Share Posted 29/07/06 01:22 AM Two points I have been a mechanic for 26 years and this staement is just an accident waiting to happen.Disconnecting the battery while motor is running could cause such a big voltage spike that yes the computor would be cleared totally that is take car to ford and get new because the old one has been fried.Second piont is THIS CODE CAN NOT BE CLEAR BY ANYTHING NOT EVEN FORD.IanMechanic, NOT Electronic Technician.... BIG difference And Ive been one of them for the last 12years , and BTW read it properly negative lead only... any peice of electronic equip must have some source of power to retain values, settings or codes... unless the equip has a peice of hardware in it called a NVM (NON VOLATILE MEMORY) that still requires a power source... and the BA defiantly does not.. peter←But Pete, you couldn't even find a permanent power source for Jeff's SatNav. Want me to give you to give you some hints, no certificate required here mate. Link to comment Share on other sites More sharing options...
Eugene Member 670 Member For: 20y 2m 1d Gender: Male Location: Newcastle NSW Posted 29/07/06 01:42 AM Share Posted 29/07/06 01:42 AM (edited) OH NO, IT LOOKS LIKE FORD MAY WIPE MY WARRANTY NOW DUE TO EDIT! that's if they dont notice the Cooler, 3.5inch exhaust, injectors, acctuator, CAI, soon to be fitted plenum, oh bugger, edit has let me down again. Edited 29/07/06 01:51 AM by Adam Link to comment Share on other sites More sharing options...
Blonk Iconoclast Donating Members 4,330 Member For: 20y 1m 21d Gender: Male Location: CH Posted 29/07/06 01:44 AM Share Posted 29/07/06 01:44 AM They may just record the last update and if you flash back to a previous update then they know the PCM has been edited or modified.I am sure that if you have no problems it may be ignored....... Till a conrod goes through the block then they might add something like "Idiot, you have been playing with your cars parametres again havent you!" Link to comment Share on other sites More sharing options...
Headsex Donating Members 2,528 Member For: 19y 3m 6d Gender: Male Location: Melb Posted 29/07/06 02:10 AM Share Posted 29/07/06 02:10 AM (edited) that's right..If you buy your car, and you have code A3LA on it, and then you flash it, the flash box stores the code A3YA in the stock location.After a couple of "services", ford update the flash on it, and bring it to say A3LD.Now next time you go for a service, and you flash the Stock code back in... What code are you flashing back in?Then ask yourself this. What code do ford know they have flashed in?Doesnt take rocket science to work it out Danny Edited 29/07/06 02:10 AM by Headsex Link to comment Share on other sites More sharing options...
SHOCK Team Grandpa Donating Members 1,921 Member For: 18y 6m 18d Gender: Male Location: Hunter Valley Posted 29/07/06 02:26 AM Share Posted 29/07/06 02:26 AM that's right..If you buy your car, and you have code A3LA on it, and then you flash it, the flash box stores the code A3YA in the stock location.After a couple of "services", ford update the flash on it, and bring it to say A3LD.Now next time you go for a service, and you flash the Stock code back in... What code are you flashing back in?Then ask yourself this. What code do ford know they have flashed in?Doesnt take rocket science to work it out Danny←My understanding from on here was everytime Ford Flash your car you put that updated flash straight back in to your edit box and delete the old Ford one. You will have the latest one everytime.....am I wrong????? Link to comment Share on other sites More sharing options...
GOLDIE My new toy Lifetime Members 5,344 Member For: 21y 6m 26d Gender: Male Location: stanthorpe wine capital of qld. Posted 29/07/06 04:59 AM Share Posted 29/07/06 04:59 AM Two points I have been a mechanic for 26 years and this staement is just an accident waiting to happen.Disconnecting the battery while motor is running could cause such a big voltage spike that yes the computor would be cleared totally that is take car to ford and get new because the old one has been fried.Second piont is THIS CODE CAN NOT BE CLEAR BY ANYTHING NOT EVEN FORD.IanMechanic, NOT Electronic Technician.... BIG difference And Ive been one of them for the last 12years , and BTW read it properly negative lead only... any peice of electronic equip must have some source of power to retain values, settings or codes... unless the equip has a peice of hardware in it called a NVM (NON VOLATILE MEMORY) that still requires a power source... and the BA defiantly does not.. peter←They must have an area that can retain info in it other wise the computor would loose it's program evry time the battery is disconnected.And that is where the code would be set I may not be and eletronics technican but I have not only repaired many fuel injection systems I have also done a lot of training criuse into the workings of the engine computors.One of the first things you learn is that voltage spikes in the eletrical system can damage the computor.One of the features of the charging systems on the current cars is that it senses the voltage of the battery to control charge rate if you take the earth lead of the battery I has no idea of the state ofthe battery and could cause a spike this in turn could damage the computor just like not jump starting the car with spike protected leads can do the same.Ian Link to comment Share on other sites More sharing options...
tab Sucker Moderating Team 32,303 Member For: 20y 6m 23d Gender: Male Location: Brisbane Posted 29/07/06 05:14 AM Share Posted 29/07/06 05:14 AM Still waiting for a pic of theBIG FAT STICKER ON WINDSCREENIs this to much to ask? Link to comment Share on other sites More sharing options...
Fat-Tony Member 5,364 Member For: 18y 7m 27d Posted 29/07/06 08:13 AM Share Posted 29/07/06 08:13 AM Two points I have been a mechanic for 26 years and this staement is just an accident waiting to happen.Disconnecting the battery while motor is running could cause such a big voltage spike that yes the computor would be cleared totally that is take car to ford and get new because the old one has been fried.Second piont is THIS CODE CAN NOT BE CLEAR BY ANYTHING NOT EVEN FORD.IanMechanic, NOT Electronic Technician.... BIG difference And Ive been one of them for the last 12years , and BTW read it properly negative lead only... any peice of electronic equip must have some source of power to retain values, settings or codes... unless the equip has a peice of hardware in it called a NVM (NON VOLATILE MEMORY) that still requires a power source... and the BA defiantly does not.. peter←They must have an area that can retain info in it other wise the computor would loose it's program evry time the battery is disconnected.And that is where the code would be set I may not be and eletronics technican but I have not only repaired many fuel injection systems I have also done a lot of training criuse into the workings of the engine computors.One of the first things you learn is that voltage spikes in the eletrical system can damage the computor.One of the features of the charging systems on the current cars is that it senses the voltage of the battery to control charge rate if you take the earth lead of the battery I has no idea of the state ofthe battery and could cause a spike this in turn could damage the computor just like not jump starting the car with spike protected leads can do the same.Ian←and its for that reason why when you jump start from a modern car you either use anti-zap leads or ground the lead from the car you are jumping to the engine block so you dont get a huge voltage spike and take out your ecu. The OBC does have a memory it stores error codes in it ect, but I have not had much of a look into the fords ecu but other ecus I have worked with those error codes can be lost or reset via a power disconnection to the OBD (ie pulling out a certian fuse) not sure if this is the case with the ford, one would hope it is LOLLLLL Link to comment Share on other sites More sharing options...
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