{"id":34513,"date":"2026-08-04T21:37:05","date_gmt":"2026-08-04T21:37:05","guid":{"rendered":"https:\/\/www.motointegrator.pt\/blog\/?p=34513"},"modified":"2026-08-04T21:37:05","modified_gmt":"2026-08-04T21:37:05","slug":"radiador-egr-com-avaria-sintomas-reparacao-e-custos","status":"publish","type":"post","link":"https:\/\/www.motointegrator.pt\/blog\/radiador-egr-com-avaria-sintomas-reparacao-e-custos\/","title":{"rendered":"Radiador EGR com avaria: sintomas, repara\u00e7\u00e3o e custos"},"content":{"rendered":"<p>Os\u00a0refrigeradores EGR\u00a0(tamb\u00e9m chamados\u00a0radiadores EGR\u00a0ou\u00a0permutadores de calor EGR) fazem parte do sistema de recircula\u00e7\u00e3o dos gases de escape (EGR). A sua fun\u00e7\u00e3o consiste em reduzir a temperatura de uma parte dos gases de escape antes de os reintroduzir no sistema de admiss\u00e3o. Para isso, o refrigerador EGR integra-se no circuito de refrigera\u00e7\u00e3o do motor.<\/p><div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">\u00cdndice de conte\u00fados<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 eztoc-toggle-hide-by-default' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.motointegrator.pt\/blog\/radiador-egr-com-avaria-sintomas-reparacao-e-custos\/#Sintomas_de_um_refrigerador_EGR_avariado\" >Sintomas de um refrigerador EGR avariado<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.motointegrator.pt\/blog\/radiador-egr-com-avaria-sintomas-reparacao-e-custos\/#Porque_deve_substituir_o_refrigerador_EGR_rapidamente\" >Porque deve substituir o refrigerador EGR rapidamente<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.motointegrator.pt\/blog\/radiador-egr-com-avaria-sintomas-reparacao-e-custos\/#Quanto_custa_substituir_um_refrigerador_EGR\" >Quanto custa substituir um refrigerador EGR?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.motointegrator.pt\/blog\/radiador-egr-com-avaria-sintomas-reparacao-e-custos\/#E_necessario_substituir_tambem_a_valvula_EGR\" >\u00c9 necess\u00e1rio substituir tamb\u00e9m a v\u00e1lvula EGR?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.motointegrator.pt\/blog\/radiador-egr-com-avaria-sintomas-reparacao-e-custos\/#Preco_da_reparacao\" >Pre\u00e7o da repara\u00e7\u00e3o<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.motointegrator.pt\/blog\/radiador-egr-com-avaria-sintomas-reparacao-e-custos\/#Onde_comprar_um_refrigerador_EGR\" >Onde comprar um refrigerador EGR?<\/a><\/li><\/ul><\/nav><\/div>\n\n<p>Um refrigerador EGR avariado pode provocar um excesso de esfor\u00e7o t\u00e9rmico, a acumula\u00e7\u00e3o de res\u00edduos dos gases de escape e o desgaste provocado pelo envelhecimento dos materiais.\u00a0Por isso, quando surgem os primeiros sintomas, deve agir rapidamente para evitar danos mais graves.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Sintomas_de_um_refrigerador_EGR_avariado\"><\/span>Sintomas de um refrigerador EGR avariado<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Normalmente, o radiador EGR n\u00e3o \u00e9 considerado uma pe\u00e7a de desgaste.\u00a0No entanto, pode sofrer avarias devido \u00e0s varia\u00e7\u00f5es extremas de temperatura.\u00a0Com o passar do tempo, estas condi\u00e7\u00f5es podem provocar fugas, geralmente no lado dos gases de escape. Como consequ\u00eancia, um radiador EGR fissurado provoca uma perda descontrolada da press\u00e3o dos gases de escape e reduz a press\u00e3o de sobrealimenta\u00e7\u00e3o do turbocompressor.<\/p>\n<p>Al\u00e9m disso, um refrigerador EGR avariado apresenta, regra geral, sintomas bastante evidentes. Um dos sinais mais comuns \u00e9 a perda gradual de l\u00edquido de refrigera\u00e7\u00e3o acompanhada pelo aumento da temperatura do motor. Inicialmente, esta perda pode passar despercebida porque, enquanto o motor est\u00e1 em funcionamento, a contrapress\u00e3o dos gases de escape \u00e9 superior \u00e0 press\u00e3o existente no circuito de refrigera\u00e7\u00e3o.<\/p>\n<p>Quando\u00a0o motor \u00e9 desligado, a press\u00e3o diminui e o l\u00edquido de refrigera\u00e7\u00e3o pode infiltrar-se no motor.\u00a0Se\u00a0voltar a ligar o motor nestas condi\u00e7\u00f5es, arrisca-se a danificar o cilindro, o pist\u00e3o e a biela. Outro sintoma frequente \u00e9 o cheiro a gases de escape no habit\u00e1culo do ve\u00edculo.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Porque_deve_substituir_o_refrigerador_EGR_rapidamente\"><\/span>Porque deve substituir o refrigerador EGR rapidamente<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Se identificar sintomas de um refrigerador EGR avariado, substitua-o o mais rapidamente poss\u00edvel.\u00a0Caso contr\u00e1rio, aumenta o risco de provocar danos graves que podem mesmo levar \u00e0 avaria total do motor.<\/p>\n<p>A situa\u00e7\u00e3o torna-se ainda mais cr\u00edtica quando a perda de l\u00edquido de refrigera\u00e7\u00e3o provoca o sobreaquecimento do motor.\u00a0Nesses casos, podem ocorrer danos na junta da cabe\u00e7a do motor e na pr\u00f3pria cabe\u00e7a do motor, tornando a repara\u00e7\u00e3o muito mais dispendiosa.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Quanto_custa_substituir_um_refrigerador_EGR\"><\/span>Quanto custa substituir um refrigerador EGR?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>O custo da substitui\u00e7\u00e3o de um refrigerador EGR varia significativamente consoante o modelo do ve\u00edculo. Na maioria dos casos, o mec\u00e2nico precisa de desmontar v\u00e1rios componentes, como o tubo de escape, a linha de retorno do \u00f3leo ou o filtro de part\u00edculas diesel, para conseguir aceder ao refrigerador.\u00a0S\u00f3 depois\u00a0pode instalar o novo componente.<\/p>\n<p>Al\u00e9m disso, n\u00e3o recomendamos a utiliza\u00e7\u00e3o de refrigeradores EGR usados, uma vez que podem apresentar desgaste interno ou defeitos dif\u00edceis de detetar.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"E_necessario_substituir_tambem_a_valvula_EGR\"><\/span>\u00c9 necess\u00e1rio substituir tamb\u00e9m a v\u00e1lvula EGR?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Se o refrigerador dos gases de escape estiver avariado, tamb\u00e9m vale a pena substituir a v\u00e1lvula EGR, porque muitos fabricantes montam ambos os componentes no mesmo conjunto.<\/p>\n<p>Por outro lado, se o refrigerador e a v\u00e1lvula estiverem instalados separadamente ou se apenas a v\u00e1lvula EGR estiver danificada, n\u00e3o \u00e9 necess\u00e1rio substituir os dois componentes ao mesmo tempo.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Preco_da_reparacao\"><\/span>Pre\u00e7o da repara\u00e7\u00e3o<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Um refrigerador EGR original novo custa, normalmente, entre\u00a0750 e 1.500 euros.\u00a0Al\u00e9m disso, deve contar com o custo do l\u00edquido de refrigera\u00e7\u00e3o. Habitualmente, s\u00e3o necess\u00e1rios entre tr\u00eas e cinco litros, a um pre\u00e7o aproximado de\u00a08 a 10 euros por litro, o que representa uma despesa entre\u00a025 e 50 euros.<\/p>\n<p>Tamb\u00e9m deve considerar a m\u00e3o de obra necess\u00e1ria para substituir o refrigerador e programar a v\u00e1lvula EGR. Este trabalho demora, normalmente, entre quatro e seis horas. Dependendo da tarifa da oficina, o custo da m\u00e3o de obra varia entre\u00a0400 e 600 euros.<\/p>\n<p>No total, o custo da repara\u00e7\u00e3o situa-se, consoante o modelo do ve\u00edculo, entre\u00a01.100 e 2.200 euros.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Onde_comprar_um_refrigerador_EGR\"><\/span>Onde comprar um refrigerador EGR?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Pode poupar dinheiro ao comprar um novo refrigerador EGR e os respetivos componentes\u00a0online, a pre\u00e7os competitivos, na loja da Motointegrator. No nosso cat\u00e1logo, com cerca de\u00a05 milh\u00f5es de pe\u00e7as e acess\u00f3rios, encontrar\u00e1 uma vasta sele\u00e7\u00e3o de pe\u00e7as de substitui\u00e7\u00e3o de marcas de refer\u00eancia e fabricantes reconhecidos.\u00a0Al\u00e9m disso, disponibilizamos pre\u00e7os competitivos e uma ampla oferta para praticamente todos os modelos de ve\u00edculos.<\/p>\n<p>*Os pre\u00e7os apresentados s\u00e3o meramente indicativos e podem variar consoante a oficina e o modelo do ve\u00edculo.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Os\u00a0refrigeradores EGR\u00a0(tamb\u00e9m chamados\u00a0radiadores EGR\u00a0ou\u00a0permutadores de calor EGR) fazem parte do sistema de recircula\u00e7\u00e3o dos gases de escape (EGR). A sua fun\u00e7\u00e3o consiste em reduzir a temperatura de uma parte dos gases de escape antes de os reintroduzir no sistema de admiss\u00e3o. Para isso, o refrigerador EGR integra-se no circuito de refrigera\u00e7\u00e3o do motor. Um refrigerador [&hellip;]<\/p>\n","protected":false},"author":53,"featured_media":34514,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3294,508],"tags":[7577,4438,7746,7744,7745],"class_list":["post-34513","post","type-post","status-publish","format-standard","has-post-thumbnail","category-automovel","category-conselhos","tag-custos","tag-pecas-de-desgaste","tag-permutador-egr","tag-radiador-egr-com-avaria","tag-sintomas"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Radiador EGR com avaria: sintomas, repara\u00e7\u00e3o e custos<\/title>\n<meta name=\"description\" content=\"Os refrigeradores EGR (tamb\u00e9m denominados permutadores de calor EGR) fazem parte do sistema de recircula\u00e7\u00e3o dos gases de escape (EGR).\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, 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