My felicia 1.3 mpi broke down on me the other day...i say broke down the battery overcharged and blew up everything electrical in my engine, i replaced the alternator and the spark plugs but still no go (the engine would turn over but not actually start) so i took it to a garage to find out my ECU had been melted and wanted over

What model is it? Is it a LX, LXi, GLi ect? Probs worth selling for spares.

If the car is ok i would enquire with a scrapyard over getting a s/h ECU which will be pennies compared to the

it is an LXI model, in laguna blue i think the manual listed it as

hm it is actually quite tempting to go for that ecu listed on ebay for only

Not as far as i am aware. You just plug it in

:P

you should be able to get an ecu for that fairly cheap from a breakers i#d have thought....

right ive got the ecu off ebay, plugged it in and of course just my luck it doesnt work, the engine is starting now but as soon as it starts it cuts out, any suggestions on whats wrong with it?

immobilizer

i dont have an immobiliser i dont think, cant find anything about one in the haynes manual

Keep perservering with it as a different ECU (if i am correct) will take a little to marry up to the characteristics of your engine as opposed to the one it came off or so i am led to believe.

I would suggest going through everything methodically if starting doesn't improve and check the condition of all plugs to sensors etc. You will get to the bottom of it.

does the car run if you lightly put your foot on the accellorator

quote=richardsfavorit;976545]The trick is when changing the battery is to, connect the battery and leave the ignition on for 2 mins - the ECU gets it settings after a while. You will hear the throttle adjusting - the garage I take my car to taught me this.

If you ever want to re-set the ECU, leave the battery disconnect overnight and then plug back in, leave the ignition on for a few mins, and then start.

Try the above that RICHARDSFAVORIT came up with in another post. This sounds like it might work for you.

i just got back from west wales so ive disconnected the battery now, will try starting it tomorrow morning, also a friend of mine mentioned that maybe my timing belt could be off, i doubt it, but is there a chance it could be?

there is no timing belt your car has a timing chain and the chances of that snapping are very remote. I have never heard of this happening.

immobilizer

I agree with TeflonTom

tried starting the car this morning after disconnecting the battery all night and still no luck

i dont have an immobiliser in my car so it cant be that

any other ideas?

You need to link the key up to the ECU - via VAG COM. I had this problem with one of my cars it starts, but will immediately stopped. I took it to my garage - the other key worked - he plugged in his diagnostic computer to the underdash plug and configured it to accept the key.

I think the immobiliser maybe built into the ECU, therefore it doesn't recognise your key.

how much wil it cost do you think to have that done to it?? will it be worth it or should i call it a day and stop repairing it and look into scapping it now?

My garage did it for a fiver - a Skoda dealer may charge more. Give a garage a ring and ask how much it might cost.

I would say your close to getting it going.

the immobilizer isn't built into the ecu on those, it wasn't till the later ecu's (simos 4, marelli 3 etc) that it was built in... it's a seperate transponder unit on the felicia. it's up behind the steering column... the key doesn't need to be coded to the ecu itself, but it does need to be coded to the immobilizer unit

Hmmm

Perhaps there is some coding that needs to be done.

I think its the voltage regulator on the alternator that kills the ECU, so worth changing that before you kill any new ECU too!

are u back on the road yet or did you decide to scrap?

still not back on the road, after being messed around by a few garages i have booked my car into a skoda garage to hopefully just get the keys coded thats going to cost me at least

my car has finally been fixed!!! after spending about