hello i have upgraded my 2,0 16v to a 3,0litre v6 from the 164 my only problem is how do i recode the fuel injection for my key .ive got the original alfa workshop manual ,but the procedure dont seem to be working (the car wont start ,dont pump fuel and ignition dont spark)the code light stays on so i belive thats the problem.if i could get some quick hints i`ve be very happy ,we have a big meeting the comming weekend in denmark.
The code light staying on shows that the immobiliser has not been turned off...
I'm assuming you brought the wiring loom and ecu from the V6 too?
Sounds silly.. what ignition key are you using? the one from the 2.0? or the one from the V6.
If you're using the one from the 2.0 you won't get it working... (effectively trying to use a differant car's 'disarming key') you'll need the one from the V6 due to the immobiliser/ecu being the same unit. (might be an idea to then change the ignition barrel to match up and maybe all the door locks?)
If you are using the key from the V6/transplanted locks across... are you using the Master key to try and reprogamm it all? hmmm the immobilisers are well know for going kaput on the alfa's... maybe it died during transplant?
the failure ive found like you all said i need the key and code box from the donor car ,but i thought that the ecu (injection) is a rom and a ram so if i took power of long about 2 years (the donor stood still about 2 years) it woud reset the ram and work with any code box.the engine managment is rom read only memory ,but if you can recode a new key /code box/ecu and fuel ecu that woud be ram random accesble memory so like a computer you will lose everything if turned of long enough
the 2,0 to 3,0 v6 conversion isnt that bad you only need alternator/ steering pump/ ac pump/ all engine montings/ drive shafts / gearbox and so on from a 2,5 v6 alfa 155 .i bought a wrecked car and took everything exept engine and ecu-wirings /ecu this was from a 164 super later than 93 it must be the new ones because the older ones dont have the water hoses on flywheel side.my conclusin is go for it its easy and cheap hp/nm if you can find the wrecked donors.
my old one chrased all valves and a piston .the car examination cant do you anything as long it is a 12valve from 93 and on, because alfa says it only has 179 hp and under the 20 percent you can tune in denmark the volume of the engine is nothing the tax office do something about.
peter du skal vel til træf i weekenden så kan det være du kan se dyret hvis jeg altså for fikset den skide code nøgle. wink
if you can code a new ecu it must have a ram chip and that woud say that there also is a battery backup in it .in the service manual it says that you can get a new ecu and recode it for the code ecu a rom is burned not coded so it must be ram , and there must be a battery in the ecu .if i could get the battery out(if there is one)it would delete the code and be free for a new from the old code box.
OK....once an ecu has been used on a car it cannot be used on another..it is burnt on the very first use it cannot be done again.!
you are going to have to either find the original keys/code unit/ecu or get it all of another v6.
absolutely never exchange the injection control units between cars.
installation of a new control unit will involve the permanent memorising
of the master code from that moment onwards this control unit will only work
in conbination with the keys and the code unit of that car.
there is nothing you can do without at least a matching CODE UNIT and ECU.
they can hold upto 6 different key codes.
jimmybob i also have a copy of the manual and i read it but i wonder have you can burn a chip in the ecu ,if you take an eksampel on a volvo truck you must remove the power from the ecu for an hour and then it has deletet everything exept the origanaly burnt settings from the factory .
so i think there is some kind of backup battery in the ecu that feeds a memory space where the code is placed .ofcourse alfa woundt write that in the manual ,then they woundt sell any new boxes .but this wekeend i will open the ecu and check it out and tell you all .
thanks for all the helping hints
the best way to start a day ,is to hear an alfa engine doing what its built for (full speed)
well it cant hurt to try.let us know what happens...but i still think that the problem is going to be the code unit not talking to the ecu.
BTW on fords you can 'turn off' the key code thiggy.!?!?!?!?!?!?!
How about the cooling system?? The 155 V6 has the thermostat on the battery side of the car, bu the 164 V6 has it on the timing belt side. I am thinking of upgrading to a 3.0 V6 too (I have a 2.5 V6) but I am a little curious of how to solve this... Or I may just go with colombo cams. I have the colombo cams from EB Spars in my 75 3.0 and it goes well. Even with 9.5:1 pistons in my 3.0 it could pass a 75 with a 3.0 from a 164 QV (QV cams, 10:1 pistons, big AFM, motronic etc).
problem solved my brother in law is a electronic freak ,he took the ecu and tared it apart and found a tiny batteri that keeps the memory chip with power .then he put it together again and master in look normal key 1 in look normal key 2 in look master key in look , wow there it was every key worked now.
If the code ecu f*cks up and has to be replaced, you dont need to replace the engine ecu as well, you just have to disconnect the internal battery, re-connect and re-write using the new code box and new master key?