99 will be obd, not the later obd2. Same plug though, yours is by the bonnet release lever. Yours throttle is cable operated, not electronic so doesn't need initialising. Basically after a reset, power loss etc, the electronic throttle needs 5 or 6 seconds to do a full sweep. I'm not entirely sure what it's learning, whether it's full and closed throttle, or resistance and power required to overcome etc, but give it 10 seconds to be safe. Cranking before it's finished doing its thing results in extended crank time on that start, and usually a pretty shitty idle and delayed throttle response.