9 replies to this topic

[Propshaft]

Hi All is there anyone on this forum who I could pm for detailed instructions on how to bypass my immobiliser it’s a 92 Mayfair on a carb I purchased the car in bits no keys and no fob . Thanks

[MiniJosh92]

A 998 carb car would not have had a 3AS system, it must be an aftermarket immobiliser.

[Propshaft]

Hi it’s a 1275 a plus engined car and it’s not after market

[stuart bowes]

there's some detail including pinouts and wiring diagrams on this page

 

https://www.metropow...-locking-tweaks

 

do the pictures of the units match up with what you have and connectors look the same? using that info it should be relatively straight forward (if not time consuming) to plot out what needs cutting and bridging out back to original spec

 

has you car got an ecu or anything or are we just talking straight forward coil pack and dizzy

[Propshaft]

It’s not got a ecu

[Propshaft]

Yes the connectors look the same and it’s just as you say dizzy and coil glad you think it’s relatively easy not for me it’s not thanks for your help

[stuart bowes]

sorry I didn't mean it to sound dismissive or condecending or anything, just saying, in comparison to other more recent types and more complicated cars as well, just having the most basic coil and dizzy set up is at least the easiest (relatively speaking)

 

I guess I would start at the back of the ignition switch, sketch out where each of those wires should go based on the original wiring diagram, and correct accordingly

[MiniJosh92]

Hi it’s a 1275 a plus engined car and it’s not after market

 

Sorry was assuming it was a 998. 

 

I have done a few SPI 3AS ones and basically the immobiliser switches an earth to the starter relay, not sure if it works the same way on a carb one though, I didn't even realise they ever fitted 3AS systems on carb cars.

Edited by MiniJosh92, 23 November 2023 - 07:56 PM.

[Propshaft]

I think my car must have been one of the last carb cars registered December 92

[Propshaft]

Reply to one carb or two apologies not required just pleased you replied with a good suggestion