FORD 2004 Mustang v.3 - Manual (Page 143)

4. Remove the jumper cable from the positive (+)
terminal of the disabled vehicle’s battery.
After the disabled vehicle has been started and the
jumper cables removed, allow it to idle for several
minutes so the engine computer can relearn its idle
conditions.
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2004 04- Mustang (mus)
Owners Guide (post-2002-fmt)
USA English (fus)
Roadside Emergencies
143