How to complete the Drive Cycle for Jeep Cherokee XJ
Submitted by djblade311 on Fri, 04/23/2021 - 14:56Credit to Smogtips.com
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A. Cold Start - In order to be classified as a cold start the engine coolant temperature must be below 122°F and within 11°F of the ambient air temperature at startup. Do not leave the key ON prior to the cold start or the heated oxygen sensor monitor may not run.