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Ram 1500 and Jeep Grand Cherokee diesel face recall over stall risk – Roadshow
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Ram 1500 and Jeep Grand Cherokee diesel face recall over stall risk – Roadshow

August 21, 2020

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</span><figure class="image image-large pull-none hasCaption shortcode" section="shortcodeImage"><div class="originalImage" data-open="modal" data-target="#12686c9d-be16-479a-b06e-d586c0681da0" data-component="modalEnlargeImage"><span><img src="https://cnet4.cbsistatic.com/img/JIFBOIkuxZHn1XWRzGIzmVyxEVc=/1092×0/2020/08/21/12686c9d-be16-479a-b06e-d586c0681da0/2014-ram-1500-ecodiesel-hero.jpg" class="" alt="2014 Ram 1500 EcoDiesel" height="0" width="1092"></span><a class="clickToEnlarge"><span>Enlarge Image</span><svg viewBox="0 0 16 16"><path d="M15.9,14.3l-3.5-3.5c0.7-1.1,1.1-2.4,1.1-3.8c0-3.8-3-6.9-6.7-6.9C3,0,0,3.1,0,6.9s3,6.9,6.7,6.9
c1.6,0,3-0.5,4.1-1.5l3.5,3.5c0.1,0.1,0.2,0.1,0.3,0.1c0,0,0,0,0,0c0.1,0,0.3-0.1,0.3-0.2l0.8-0.9C16,14.8,16,14.5,15.9,14.3z
M6.7,11.6c-2.6,0-4.6-2.1-4.6-4.7s2.1-4.7,4.6-4.7c2.6,0,4.6,2.1,4.6,4.7S9.3,11.6,6.7,11.6z"></path></svg></a></div><figcaption><span class="caption"><p>Ram's torquey EcoDiesel has been quite popular in its 1500-Series pickup.</p></span><span class="credit">
Ram
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</span><p class="speakableTextP1">Fiat Chrysler Automobiles is voluntarily recalling select examples of its 2014 to 2018 <span class="link" section="shortcodeLink"><a href="https://www.cnet.com/roadshow/reviews/2020-ram-1500-review/">Ram 1500 full-size pickup</a></span> and <span class="link" section="shortcodeLink"><a href="https://www.cnet.com/roadshow/reviews/2017-jeep-grand-cherokee-review/">2014-2016 Jeep Grand Cherokee SUV</a></span> over a potential engine stall problem. The <a href="https://www.cnet.com/roadshow/recalls/">recall</a>, which affects 58,016 trucks and SUVs with the company's 3.0-liter EcoDiesel engines, centers on a crank position sensor part.</p><p class="speakableTextP2">According to the <a href="https://www.nhtsa.gov/" target="_blank" rel="noopener noreferrer nofollow" data-component="externalLink">National Highway Traffic Safety Administration</a>, the <a href="https://www.vmmotori.it/en/" target="_blank" rel="noopener noreferrer nofollow" data-component="externalLink">VM Motori</a>-designed EcoDiesel's crank position sensor tone wheel — sometimes known as a relocutor ring — can delaminate. That's bad news, as the part helps synchronize the engine's fuel-injector pulses and camshaft timing, which are continually optimized for maximum efficiency. If this hardware delaminates, the engine may stall, causing a safety risk.</p><span>

</span><div class="c-reengageNewsletter shortcode hasNewsletter newsletter-subscribe-form desktop broad" data-component="newsletterAndInterest" data-newsletter-and-interest-options="{&quot;id&quot;:&quot;c28af05c-f313-11e2-8262-0291187b029a_CNET_TAG&quot;,&quot;name&quot;:&quot;Jeep&quot;,&quot;type&quot;:&quot;specific&quot;,&quot;isBroadInterest&quot;:false,&quot;noFollowNoBlockText&quot;:&quot;Subscribe to the Roadshow newsletter, receive notifications and see related stories on CNET.&quot;,&quot;noFollowBlockText&quot;:&quot;Subscribe to the Roadshow newsletter and see related stories on CNET.&quot;,&quot;FollowNoBlockText&quot;:&quot;Subscribe to the Roadshow newsletter and receive notifications.&quot;,&quot;FollowBlockText&quot;:&quot;Subscribe to the Roadshow newsletter.&quot;}"><span>
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</span><p>FCA's solution to the problem apparently doesn't involve replacing the crank position sensor tone wheel, which can be tough to access. Instead, the automaker is instructing authorized Ram and Jeep technicians to update the EcoDiesel's powertrain control module, forcing the powertrain to "maintain vehicle propulsion by reading the camshaft position signal in the event that the crankshaft position signal is lost."&nbsp;</p><p>It's not immediately clear if this firmware patch, performed free of charge, will impede the engine's ability to detect misfires (another important function of the crank position sensor) or otherwise alter engine performance.</p><p>No crashes or injuries resulting from this potential defect are detailed in <a href="https://www.nhtsa.gov/recalls?nhtsaId=20V475000&amp;refurl=rss" target="_blank" rel="noopener noreferrer nofollow" data-component="externalLink">NHTSA's official recall announcement</a>.</p><p>Affected <a href="https://www.cnet.com/roadshow/make/ram/">Ram</a> and <a href="https://www.cnet.com/roadshow/make/jeep/">Jeep</a> owners will be notified by the automaker, with the recall campaign scheduled to commence on Oct. 2.</p><span>

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