"TeGGeRï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï ¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½" wrote:
> amb@bronze.lcs.mit.edu (andrew m. boardman) wrote in
> news:e8bhrc$13nt$1@grapevine.csail.mit.edu:
>
>
>>The short version: What, on an '89 DPFI 1.5l engine, does the ECU use
>>to determine target EACV opening and idle speed? What would cause the
>>ECU to suddenly decide to command a full-open EACV without also
>>indicating an error?
>>
>
>
>
> You have a giant air leak.
>
> I don't know if you have a Fast Idle Valve, but on multi-port cars this is
> the prime culprit.
>
yes, but the ecu's commanding the eacv to do stuff. it's got to be one
of the input sensors...