{"id":6911,"date":"2020-01-19T16:37:44","date_gmt":"2020-01-19T21:37:44","guid":{"rendered":"https:\/\/techlinkfrench.mynetworkcontent.com\/?p=6911"},"modified":"2020-02-19T16:40:05","modified_gmt":"2020-02-19T21:40:05","slug":"marche-irreguliere-du-moteur-par-temps-tres-froid","status":"publish","type":"post","link":"https:\/\/gm-techlinkfrench.com\/?p=6911","title":{"rendered":"Marche irr\u00e9guli\u00e8re du moteur par temps tr\u00e8s froid"},"content":{"rendered":"<p>Un Silverado HD ou Sierra HD 2020 \u00e9quip\u00e9 du moteur V8 de 6,6 L (EFC L8T) peut pr\u00e9senter un probl\u00e8me de ralenti irr\u00e9gulier ou de puissance r\u00e9duite du moteur par temps tr\u00e8s froid (-23\u00b0C ou -10\u00b0F). Le t\u00e9moin de v\u00e9rification du moteur peut \u00eatre allum\u00e9 avec les codes d&#8217;anomalie P0123 (haute tension sur le circuit du capteur 1 de position du papillon) et P0222 (basse tension sur le circuit du capteur 2 de position du papillon). Ces probl\u00e8mes de rendement de moteur peuvent \u00eatre caus\u00e9s par une anomalie du circuit interne dans le corps de papillon.<\/p>\n<p>En pr\u00e9sence de ces probl\u00e8mes sur un v\u00e9hicule expos\u00e9 \u00e0 des temps tr\u00e8s froids, remplacer le corps de papillon conform\u00e9ment \u00e0 la proc\u00e9dure de r\u00e9paration des renseignements techniques appropri\u00e9s (Fig.10). De plus, ajouter un fil de masse de calibre 14 d&#8217;une longueur de 8\u00a0po, en utilisant deux cosses \u00e0 anneau de 8 mm.<\/p>\n<p>&nbsp;<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-12532\" src=\"https:\/\/techlink.mynetworkcontent.com\/wp-content\/uploads\/2020\/01\/F10-rough-4.png\" sizes=\"auto, (max-width: 740px) 100vw, 740px\" srcset=\"https:\/\/techlink.mynetworkcontent.com\/wp-content\/uploads\/2020\/01\/F10-rough-4.png 740w, https:\/\/techlink.mynetworkcontent.com\/wp-content\/uploads\/2020\/01\/F10-rough-4-300x195.png 300w, https:\/\/techlink.mynetworkcontent.com\/wp-content\/uploads\/2020\/01\/F10-rough-4-85x55.png 85w, https:\/\/techlink.mynetworkcontent.com\/wp-content\/uploads\/2020\/01\/F10-rough-4-200x130.png 200w\" alt=\"\" width=\"740\" height=\"480\" \/><strong>Fig. 10<\/strong><\/p>\n<p>&nbsp;<\/p>\n<p>Pour poser le fil de masse, retirer le bouchon d&#8217;huile et le couvercle du moteur du cache-soupapes de la rang\u00e9e de cylindres gauche du moteur. Fixer une extr\u00e9mit\u00e9 du fil de masse \u00e0 la fixation du corps de papillon inf\u00e9rieure droite en orientant le c\u00f4t\u00e9 pince de la cosse \u00e0 anneau vers la t\u00eate du boulon (Fig. 11).<\/p>\n<p>&nbsp;<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-12533\" src=\"https:\/\/techlink.mynetworkcontent.com\/wp-content\/uploads\/2020\/01\/F11-rough-1.png\" sizes=\"auto, (max-width: 740px) 100vw, 740px\" srcset=\"https:\/\/techlink.mynetworkcontent.com\/wp-content\/uploads\/2020\/01\/F11-rough-1.png 740w, https:\/\/techlink.mynetworkcontent.com\/wp-content\/uploads\/2020\/01\/F11-rough-1-300x195.png 300w, https:\/\/techlink.mynetworkcontent.com\/wp-content\/uploads\/2020\/01\/F11-rough-1-85x55.png 85w, https:\/\/techlink.mynetworkcontent.com\/wp-content\/uploads\/2020\/01\/F11-rough-1-200x130.png 200w\" alt=\"\" width=\"740\" height=\"480\" \/><strong>Fig. 11<\/strong><\/p>\n<p>&nbsp;<\/p>\n<p>Fixer l&#8217;autre extr\u00e9mit\u00e9 \u00e0 la fixation du cache-soupapes en orientant le c\u00f4t\u00e9 pince de la cosse \u00e0 anneau vers la t\u00eate de boulon (Fig. 12).<\/p>\n<p>&nbsp;<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-12534\" src=\"https:\/\/techlink.mynetworkcontent.com\/wp-content\/uploads\/2020\/01\/F12-rough-2.png\" sizes=\"auto, (max-width: 740px) 100vw, 740px\" srcset=\"https:\/\/techlink.mynetworkcontent.com\/wp-content\/uploads\/2020\/01\/F12-rough-2.png 740w, https:\/\/techlink.mynetworkcontent.com\/wp-content\/uploads\/2020\/01\/F12-rough-2-300x195.png 300w, https:\/\/techlink.mynetworkcontent.com\/wp-content\/uploads\/2020\/01\/F12-rough-2-85x55.png 85w, https:\/\/techlink.mynetworkcontent.com\/wp-content\/uploads\/2020\/01\/F12-rough-2-200x130.png 200w\" alt=\"\" width=\"740\" height=\"480\" \/><strong>Fig. 12<\/strong><\/p>\n<p>&nbsp;<\/p>\n<p>Une fois le fil de masse en place et bien fix\u00e9 (Fig. 13), effacer tous les codes d&#8217;anomalie et effectuer un essai routier avec le v\u00e9hicule pour v\u00e9rifier la r\u00e9paration.<\/p>\n<p>&nbsp;<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-12535\" src=\"https:\/\/techlink.mynetworkcontent.com\/wp-content\/uploads\/2020\/01\/F13-rough-3.png\" sizes=\"auto, (max-width: 740px) 100vw, 740px\" srcset=\"https:\/\/techlink.mynetworkcontent.com\/wp-content\/uploads\/2020\/01\/F13-rough-3.png 740w, https:\/\/techlink.mynetworkcontent.com\/wp-content\/uploads\/2020\/01\/F13-rough-3-300x195.png 300w, https:\/\/techlink.mynetworkcontent.com\/wp-content\/uploads\/2020\/01\/F13-rough-3-85x55.png 85w, https:\/\/techlink.mynetworkcontent.com\/wp-content\/uploads\/2020\/01\/F13-rough-3-200x130.png 200w\" alt=\"\" width=\"740\" height=\"480\" \/><strong>Fig. 13<\/strong><\/p>\n<p>&nbsp;<\/p>\n<p>Se reporter au document n\u00b0 PIP5706 pour de plus amples renseignements.<\/p>\n<p>&nbsp;<\/p>\n<p><em>&#8211; Merci \u00e0 Tim Lightfoot<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Un Silverado HD ou Sierra HD 2020 \u00e9quip\u00e9 du moteur V8 de 6,6 L (EFC L8T) peut pr\u00e9senter un probl\u00e8me de ralenti irr\u00e9gulier ou de puissance r\u00e9duite du moteur par [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-6911","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/gm-techlinkfrench.com\/index.php?rest_route=\/wp\/v2\/posts\/6911","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gm-techlinkfrench.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/gm-techlinkfrench.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/gm-techlinkfrench.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/gm-techlinkfrench.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=6911"}],"version-history":[{"count":1,"href":"https:\/\/gm-techlinkfrench.com\/index.php?rest_route=\/wp\/v2\/posts\/6911\/revisions"}],"predecessor-version":[{"id":6912,"href":"https:\/\/gm-techlinkfrench.com\/index.php?rest_route=\/wp\/v2\/posts\/6911\/revisions\/6912"}],"wp:attachment":[{"href":"https:\/\/gm-techlinkfrench.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=6911"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gm-techlinkfrench.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=6911"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gm-techlinkfrench.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=6911"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}