850 ecu change

[inde_house]

I have bought an rica d ecu. The correct spec for my car. Plugged it in and the car wont start. Although it is turning over and trying to start.

Wat is the correct nethod to change the ecu?

[p fandango]

i've never done anything special tbh

[inde_house]

My car is a 95 m reg. Would it make a difference if the ecu cameoff a later car

[p fandango]

My car is a 95 m reg. Would it make a difference if the ecu cameoff a later car

yes, i'd of thought the ecu will be expecting a transponder code for the immobilizer which your car won't have

[stribo]

I think there are 2 different tpes of ECU depending on whether it's a OBDI or OBDII car, I'm sure someone will confirm or deny this.

[charlesboya]

Yes indeed it will make a difference, I believe yours is on Bosch 4.3 software which changed to Bosch 4.4 from 96-98. You can read more on this and find general tuning guidelines at the excellent www.wothrline.com site. The owner/writer is a Swedish friend of mine who first tuned my Volvo 850 about 5 years ago. He knows what he is talking about for sure.

[M-R-P]

Yes indeed it will make a difference, I believe yours is on Bosch 4.3 software which changed to Bosch 4.4 from 96-98. You can read more on this and find general tuning guidelines at the excellent www.wothrline.com site. The owner/writer is a Swedish friend of mine who first tuned my Volvo 850 about 5 years ago. He knows what he is talking about for sure.

And a nice car it is too

How you been mate?

[charlesboya]

Thanks mate, I have not been too bad was up in Yorkshire over Christmas, how about you, all well with you?

[M-R-P]

Yes thanks mate, still tweaking the car You got that blanking plate fitted yet?

[charlesboya]

That sounds fun Sadly not been able to fit it yet but want to do it soon. How is your lovely car?

[inde_house]

If it the immobiliser can it be disabled

[M-R-P]

Sorry - off topic

I believe there's a workaround for the immobilizer, on one of Merc85's recent threads, posted by 960Kg iirc.

[inde_house]

Cant find that thread. Could someone pop the link on here for me.

I read sonewhere if you take out fuse 4 and 8 is takes out the immobiliser.

Is that correct

[charlesboya]

Oops, sorry too!

[inde_house]

No problem lads.

So if the two terminals are bridged on the relays. Are the relays taken out or left in situ

[p fandango]

No problem lads.

So if the two terminals are bridged on the relays. Are the relays taken out or left in situ

if your bypassing it you can take it out

[T5frankie]

its probably an auto ecu

[p fandango]

its probably an auto ecu

Asking as its they right year an auto ecu will still work

[stribo]

its probably an auto ecu

Asking as its they right year an auto ecu will still work

Gav runs an auto ECU in his red 850.

[T5frankie]

i bought a 1997 s70 t5 ecu and it wouldnt work in my 1997 v70r