{"id":89670,"date":"2023-08-17T15:18:00","date_gmt":"2023-08-17T15:18:00","guid":{"rendered":"https:\/\/eu.motorad.com\/tester-correctement-un-thermostat-automatique\/"},"modified":"2026-08-14T19:50:38","modified_gmt":"2026-08-14T19:50:38","slug":"tester-correctement-un-thermostat-automatique","status":"publish","type":"post","link":"https:\/\/eu.motorad.com\/fr\/tester-correctement-un-thermostat-automatique\/","title":{"rendered":"Tester correctement un thermostat automatique"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Le contr\u00f4le d&rsquo;un thermostat est une op\u00e9ration simple qui peut vous faire gagner du temps et de l&rsquo;argent en garantissant le bon fonctionnement du syst\u00e8me de refroidissement de votre v\u00e9hicule. Voici un guide simple, \u00e9tape par \u00e9tape, pour contr\u00f4ler un thermostat : <\/p>\n\n<ol class=\"wp-block-list\">\n<li><strong>La s\u00e9curit\u00e9 avant tout<\/strong>: assurez-vous que le moteur soit compl\u00e8tement refroidi avant de commencer l&rsquo;essai afin d&rsquo;\u00e9viter toute br\u00fblure ou blessure.<\/li>\n\n\n\n<li><strong>Localisez le thermostat<\/strong>: identifiez l&#8217;emplacement du thermostat dans le circuit de refroidissement de votre v\u00e9hicule. Il est g\u00e9n\u00e9ralement log\u00e9 dans une pi\u00e8ce moul\u00e9e en m\u00e9tal, \u00e0 l&rsquo;endroit o\u00f9 le tuyau sup\u00e9rieur du radiateur se raccorde au moteur. <\/li>\n\n\n\n<li><strong>Retirez le thermostat<\/strong>:<\/li>\n<\/ol>\n\n<ul class=\"wp-block-list\">\n<li>D\u00e9branchez le c\u00e2ble n\u00e9gatif de la batterie afin d&rsquo;\u00e9viter tout incident \u00e9lectrique.<\/li>\n\n\n\n<li>Vidangez un peu de liquide de refroidissement du radiateur jusqu&rsquo;\u00e0 ce que le niveau soit inf\u00e9rieur au bo\u00eetier du thermostat, afin d&rsquo;\u00e9viter tout d\u00e9versement.<\/li>\n\n\n\n<li>Retirez avec pr\u00e9caution le bo\u00eetier du thermostat, puis retirez le thermostat.<\/li>\n<\/ul>\n\n<p class=\"wp-block-paragraph\"><strong>Test \u00e0 l&rsquo;eau bouillante<\/strong>:<\/p>\n\n<ul class=\"wp-block-list\">\n<li>Remplissez une casserole d&rsquo;eau et portez-la \u00e0 \u00e9bullition.<\/li>\n\n\n\n<li>Plongez le thermostat dans l&rsquo;eau bouillante \u00e0 l&rsquo;aide d&rsquo;un ustensile, en veillant \u00e0 ne pas toucher le fond de la casserole.<\/li>\n\n\n\n<li>Surveillez le thermostat pendant que l&rsquo;eau continue de bouillir.<\/li>\n\n\n\n<li>Un thermostat en bon \u00e9tat de fonctionnement devrait commencer \u00e0 s&rsquo;ouvrir lorsque l&rsquo;eau atteint la temp\u00e9rature sp\u00e9cifi\u00e9e (g\u00e9n\u00e9ralement comprise entre 180 \u00b0F et 195 \u00b0F, soit entre 82 \u00b0C et 90 \u00b0C).<\/li>\n\n\n\n<li>Si le thermostat ne s&rsquo;ouvre pas, cela signifie qu&rsquo;il est peut-\u00eatre d\u00e9fectueux et qu&rsquo;il doit \u00eatre remplac\u00e9.<\/li>\n<\/ul>\n\n<p class=\"wp-block-paragraph\"><strong>V\u00e9rification et remplacement<\/strong>:<\/p>\n\n<ul class=\"wp-block-list\">\n<li>V\u00e9rifiez que le thermostat ne pr\u00e9sente aucun signe de corrosion, d&rsquo;usure ou de d\u00e9t\u00e9rioration.<\/li>\n\n\n\n<li>Si le thermostat ne s&rsquo;ouvre pas lors du test \u00e0 l&rsquo;eau bouillante ou pr\u00e9sente des signes de d\u00e9t\u00e9rioration, il est conseill\u00e9 de le remplacer par un neuf.<\/li>\n<\/ul>\n\n<p class=\"wp-block-paragraph\"><strong>R\u00e9installez le thermostat<\/strong>:<\/p>\n\n<ul class=\"wp-block-list\">\n<li>Installez le nouveau thermostat dans son bo\u00eetier en veillant \u00e0 ce que la soupape \u00e0 oscillation (le cas \u00e9ch\u00e9ant) soit orient\u00e9e vers le haut afin de permettre \u00e0 l&rsquo;air emprisonn\u00e9 de s&rsquo;\u00e9chapper.<\/li>\n\n\n\n<li>Remettez le bo\u00eetier du thermostat bien en place.<\/li>\n\n\n\n<li>Remplissez le radiateur avec le liquide de refroidissement que vous avez pr\u00e9alablement vidang\u00e9.<\/li>\n\n\n\n<li>Rebranchez le c\u00e2ble n\u00e9gatif de la batterie.<\/li>\n<\/ul>\n\n<p class=\"wp-block-paragraph\"><strong>V\u00e9rification du syst\u00e8me de refroidissement<\/strong>:<\/p>\n\n<ul class=\"wp-block-list\">\n<li>D\u00e9marrez le moteur et laissez-le atteindre sa temp\u00e9rature de fonctionnement.<\/li>\n\n\n\n<li>Surveillez la jauge de temp\u00e9rature et v\u00e9rifiez qu&rsquo;il n&rsquo;y a aucun signe de surchauffe.<\/li>\n\n\n\n<li>Assurez-vous que le thermostat s&rsquo;ouvre et se ferme correctement afin de r\u00e9guler efficacement la temp\u00e9rature du moteur.<\/li>\n<\/ul>\n\n<p class=\"wp-block-paragraph\">En suivant ces \u00e9tapes simples pour tester et, le cas \u00e9ch\u00e9ant, remplacer un thermostat d\u00e9fectueux, vous pourrez pr\u00e9server l&rsquo;efficacit\u00e9 du syst\u00e8me de refroidissement de votre v\u00e9hicule, pr\u00e9venir toute surchauffe et \u00e9viter des r\u00e9parations co\u00fbteuses \u00e0 l&rsquo;avenir.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Le contr\u00f4le d&rsquo;un thermostat est une op\u00e9ration simple qui peut vous faire gagner du temps et de l&rsquo;argent en garantissant [&#8230;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[3699,2509],"tags":[],"class_list":["post-89670","post","type-post","status-publish","format-standard","hentry","category-articles-techniques-livres-blancs","category-thermostats-fr"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.1 (Yoast SEO v28.1) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Tester correctement un thermostat automatique - MotoRad<\/title>\n<meta name=\"description\" content=\"V\u00e9rifiez le bon fonctionnement d&#039;un thermostat. 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