Re- check O2 again, by disconnecting at the plug.  Run like this until
it acts up.   Removing the O2, makes ECU going to a "best unknown conditon".
Also make sure shield in O2 wiring is not shorted to center wire.
                                                     ERic

Jason Willenbrock wrote:

> hey all,
> i am trying to set timing on my 87 syncro.  well, according to bentely
> you are supposed to get the engine to an idle, after instaling
> equipment, then disconnect the tII sensor, bring engine to 2000-2500
> rpm then check timing.  well, as soon as i disconnect TII the engine
> dies.  tried again, samething, won't even start with it disconnected.
> what is going on, bad tempII or something else.  i checked voltage and
> it is good.  also i noticed the sensor is different on this van
> compared to my 90 gl.
> update, my problem is once engine has idled for a while, 7 minutes, it
> starts to run bad, engine starts to choke, spits some black smoke,
> back fires then stalls.  mixture may be off. i have swapped ecu no
> change, swapped afm, no change, check 02 sensor, good, swapped idle
> control unit, no change, check all wiring, good, grounds clean.  what
> else?
> the TII thing really bothers me.
> TIA
> jason
> 90gl
> 87 syncro westy project
> 87 wolfsburg parts
>
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