Ford Ranger

[adt1]

>> My friend has am '88 ford ranger 2.9 v6. I don't know too much about it but
>> he has a problem with it stalling occasionally when taing his foot off the
>> throttle. Doesn't seem to have any relation to temp, can happen straight
>> after starting or after several hours of running. Only common aspect is
>> going to closed throttle and sometimes it's fine, other it's not.

In addition to the possible causes already mentioned, add
a bad idle air bypass solenoid or a bad throttle position 
sensor.

The throttle position sensor problem might not be peristent
enough to set a fault code.

Anthony Tsakiris