When my gto sat for a while . and when i come to start it it did not start , It turned over all the dash lights came on , just no life , I checked all sorts of things , and it ended up being the ecu , I was told it is quite common for them to go faulty after they have sat for a while ? On my mark 1 gto the ecu is behind the radio , There quite easy to take out ,a couple of bolts and a plug , if i remember ? If you contact the ecu doctor they will advise you 01752 346437 , ,They are very help full , I think if you send it to them they will check it for free and advise if it needs a repair , i think mine was 100 pounds ish to repair that was about 2 years ago , Good luck
I had mine done also you may want to check your receipt unless he’s come down alot! I paid £215 for him to change x25p capacitors…I know I’ve opened it.
I’ve just repaired an ECU by the way, I will look at your ECU if you wish but would need you to become a full member as @matttinsley did because of the advice he received. I’m still hoping a member will offer to pop over with a bit of knowledge to help you get this started for your dad… then maybe you can buy him club membership for Christmas
Dave
