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SVT Shelby GT500
Drive cycle
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<blockquote data-quote="91svtbird" data-source="post: 11303036" data-attributes="member: 37026"><p>Do you have an aftermarket tune in the car? If so it could be that something is shut off in the tune like the rear o2's, cat monitor, cat temp switch or even the EGR. If anything in the Evap system is turned off you will not complete the drive cycle.</p><p></p><p>If not then:</p><p>A drive cycle usually consists of at least one if not two complete cycles of :</p><p></p><p>1) A cold start idle for 15-29 seconds</p><p>2) drive at 40mph for 4 min to warm up engine</p><p>3)drive at 40-60 mph (straight as possible) steady pedal for 10 min</p><p>4) stop and go traffic 25-35 mph for 10 min</p><p>5) accelerate from 0-35-45 1/2 throttle (3times)</p><p>6) accelerate from 0-50 1/2 throttle and let off then coast to 40mph closed throttle with no brakes (repeat 3 times)</p><p>7)park vehicle for 8hrs then repeat steps 1-6 </p><p></p><p>Hope you get this worked out.:beer:</p></blockquote><p></p>
[QUOTE="91svtbird, post: 11303036, member: 37026"] Do you have an aftermarket tune in the car? If so it could be that something is shut off in the tune like the rear o2's, cat monitor, cat temp switch or even the EGR. If anything in the Evap system is turned off you will not complete the drive cycle. If not then: A drive cycle usually consists of at least one if not two complete cycles of : 1) A cold start idle for 15-29 seconds 2) drive at 40mph for 4 min to warm up engine 3)drive at 40-60 mph (straight as possible) steady pedal for 10 min 4) stop and go traffic 25-35 mph for 10 min 5) accelerate from 0-35-45 1/2 throttle (3times) 6) accelerate from 0-50 1/2 throttle and let off then coast to 40mph closed throttle with no brakes (repeat 3 times) 7)park vehicle for 8hrs then repeat steps 1-6 Hope you get this worked out.:beer: [/QUOTE]
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Drive cycle
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