plugging into the pug ECU

[Pugsly]

Does anyone remember reading about some DIY connector to plug into the peugeot ECU? or something similar to this, where you can read the diagnostics read outs? Tell me if i don't know what i'm talking about, but i remember reading this somewhere. I thought I read it in here but i can't find it. It plugs into the thing under the steering column(i think).

Also, does anyone know how to test if the Idle air control motor or valve is working properly? Mar car is idling rough and stalls when the aircon is switched on (sometimes)

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Thanks again!!

Joey

[Rod Hagen]

Sorry joey, I've forgotten which peugeot you have again.

If the idling problem only occurs with the air con on, its probably a problem with the accelerated idle circuitry. Check the leads and relays. If it occurs all the time, first check for the simple things, like a loose spark plug lead (common on some 505's) , and then work through the general tuning issues. A sudden idling drop , though, often indicates that a particular cylinder isn't firing.

let it idle for a bit and then pull the plugs. If you find one wet one, you probably know where to look. Alternatively pull a lead at a time and see if the revs drop further (use heavily insulated pliers and don't touch the bodywork etc). If they DON'T drop with one lead, then you know where the problem is.

Cheers

Rod

[ 19 February 2002: Message edited by: Rod Hagen ]</p>

[rek]

It's the OBD II connector you're talking about -- on late model 306s it's underneath the steering column, behind the panel that covers the fusebox. It looks sort of like a European SCART television socket.

Apparently you can read a number of sensor readings and the like from this port; however the reader units aren't all that cheap. I haven't seen any DIY kits for a reader unit.

If you're electronic-engineering minded enough, you can buy the signalling and communication protocols from the SAE web site

I recall posting a few links about this in an older topic here; a search on the board for "OBD II" should pick it up.

[Pugsly]

thanks rod, it's a 98 306 Xsi. I figured out that the device i want to test is the idle control stepper motor(as stated in the haynes manual). I'm going to start another thread about this