unidentified connector

[ianclapham]

any ideas??

the engine is an m40

it doesnt look like its been plugged into anything recently and everything still works.

[SteMarsden]

I have the same on my m40B18 engine and got fooled too, doesnt plug into anything.
HTH.

[ianclapham]

thanks ste, have you looked at my project? its coming on, is yours road rally spec???

ian

[smithysmith]

Its a diagnostic connector for the afm, well thats what i was told for the m42 anyway

[stup86]

I was told it would connect to the cat, if it had one.

It's there for the US market as they had to have cats before 1993, unlike us.

Cheers

Stu

[SteMarsden]

Just posted on your Photo Gallery thread.... looks great mate! Coming along nicely.... mines PBMW spec, so very standard....

[asmith88]

its only used on cat equipped cars, tie it up and just leave it alone

[ianclapham]

super replies guys, i will tie it out of the way then.

[Grrrmachine]

This is a regular question. It's a plug to a valve that ran to the carbon canister which recaptured fuel vapours and was pressurised from the back of the throttle body. Didn't do much when it was fitted, anyway.

[Brianmoooore]

It connects to a valve between the inlet manifold and the carbon canister that absorbs fumes from the sealed fuel tank. The ECU opens the valve at regular intervals and suitable engine conditions to allow air into the fuel tank to replace the fuel that has been used, and to maintain the fuel tank internal pressure at slightly lower than atmospheric.
You will find the hose that should be connected to the carbon canister tucked into the RH suspension turret, and the hose that goes to the inlet manifold should be near the connector, with a blanking cap on the end of it.