{"id":10701,"date":"2026-09-30T10:38:05","date_gmt":"2026-09-30T10:38:05","guid":{"rendered":"https:\/\/shop.autoboss.com\/?post_type=product&#038;p=10701"},"modified":"2026-10-09T05:51:06","modified_gmt":"2026-10-09T05:51:06","slug":"autool-pt502-digital-automotive-vacuum-tester","status":"publish","type":"product","link":"https:\/\/autoboss.com\/es\/product\/autool-pt502-digital-automotive-vacuum-tester\/","title":{"rendered":"AUTOOL PT502 Digital Automotive Vacuum Tester with Battery-Clamp Power"},"content":{"rendered":"<div class=\"abd-pd\" data-abd-version=\"1\">\n<header class=\"abd-hero\">\n<h3>Read Engine Vacuum Live, Powered From the Vehicle Battery<\/h3>\n<p class=\"abd-lead\">The PT502 shows negative pressure in real time on vacuum paths such as the intake manifold, crankcase and turbo vacuum lines, with automatic temperature compensation. It clamps onto 12 V vehicle power and measures vacuum only, not boost.<\/p>\n<ul class=\"abd-facts\">\n<li>-101 to 0 kPa<\/li>\n<li>\u00b11% FS<\/li>\n<li>Temperature Compensated<\/li>\n<li>12 V Clamp Power<\/li>\n<li>Reverse Polarity Protection<\/li>\n<\/ul>\n<\/header>\n<section class=\"abd-sec\" id=\"abd-features\">\n<h4>Key Features<\/h4>\n<ol class=\"abd-features\">\n<li>\n<h5>Real-Time Readout<\/h5>\n<p>A built-in high-precision pressure sensor captures pressure changes as they happen across the working range.<\/p>\n<\/li>\n<li>\n<h5>Automatic Temperature Compensation<\/h5>\n<p>A built-in temperature sensor tracks ambient changes and corrects measurement deviation.<\/p>\n<\/li>\n<li>\n<h5>Direct Vehicle Power<\/h5>\n<p>Runs from the vehicle battery through clamps for continuous observation, with no internal battery to charge.<\/p>\n<\/li>\n<li>\n<h5>Reverse Polarity Protection<\/h5>\n<p>Cuts off current if the clamps are connected the wrong way round, protecting the gauge and the battery.<\/p>\n<\/li>\n<li>\n<h5>Pattern-Based Diagnosis<\/h5>\n<p>Follow the vacuum pattern at the chosen connection and compare readings under the same recorded engine conditions to decide what to inspect next.<\/p>\n<\/li>\n<\/ol>\n<\/section>\n<section class=\"abd-sec\" id=\"abd-box\">\n<h4>What&#8217;s in the Box<\/h4>\n<ul class=\"abd-box\">\n<li>PT502 vacuum pressure gauge<\/li>\n<li>Vehicle battery clamp power cable<\/li>\n<li>Vacuum pressure measurement probe \/ interface<\/li>\n<li>User manual<\/li>\n<\/ul>\n<figure class=\"abd-fig\"><img decoding=\"async\" src=\"https:\/\/autoboss.com\/wp-content\/uploads\/autool-catalog\/media\/ae78b2d50b3ce163086577db.webp\" alt=\"AUTOOL PT502 vacuum pressure gauge with battery clamps and probe, retail box and user manual\" width=\"1200\" height=\"1200\" loading=\"lazy\"><figcaption>PT502 package contents.<\/figcaption><\/figure>\n<\/section>\n<section class=\"abd-sec\" id=\"abd-use\">\n<h4>How to Use<\/h4>\n<ol class=\"abd-steps\">\n<li><b>Choose the test path<\/b><span>Confirm the system is a vacuum path and note the expected range and operating condition.<\/span><\/li>\n<li><b>Power on first<\/b><span>Connect the clamps to the vehicle battery with correct polarity and switch on before vacuum is applied.<\/span><\/li>\n<li><b>Connect safely<\/b><span>Fit the probe to the vacuum connection without forcing fittings.<\/span><\/li>\n<li><b>Set the condition<\/b><span>Run the engine or system only as the vehicle procedure directs and watch for leaks at the connection.<\/span><\/li>\n<li><b>Capture and restore<\/b><span>Record the reading and condition, repeat when a comparison is needed, then remove the probe and restore the connection.<\/span><\/li>\n<\/ol>\n<p class=\"abd-note\">Vehicle-power connection, readings and troubleshooting: <a href=\"https:\/\/autoboss.com\/wp-content\/uploads\/autool-catalog\/media\/4db93b2a385075efe7effc2d.pdf\" target=\"_blank\" rel=\"noopener\">PT502 user manual (PDF)<\/a>.<\/p>\n<\/section>\n<section class=\"abd-sec\" id=\"abd-notes\">\n<h4>Good to Know<\/h4>\n<div class=\"abd-notes\">\n<div class=\"abd-note-group is-caution\">\n<h5><span class=\"abd-tag\">Caution<\/span><\/h5>\n<ul>\n<li>Vacuum only: do not use the PT502 for positive-pressure or boost testing.<\/li>\n<li>Do not switch the gauge on while pressure is already applied; it can affect zeroing and accuracy.<\/li>\n<li>Connect the clamps correctly even though reverse polarity protection is fitted.<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/section>\n<\/div>","protected":false},"excerpt":{"rendered":"<ul>\n<li><strong>Automotive Vacuum Paths:<\/strong> Observe intake, crankcase, EGR\/exhaust-control, turbo vacuum, and ventilation-system pressure patterns.<\/li>\n<li><strong>-101\u20130 kPa Range:<\/strong> Capture pressure changes across the -101 to 0 kPa working range with \u00b11% FS accuracy.<\/li>\n<li><strong>Temperature Compensation:<\/strong> Automatically correct measurement deviation as ambient temperature changes from -10\u00b0C to 60\u00b0C.<\/li>\n<li><strong>Direct 12 V Power:<\/strong> Connect to vehicle 12 V power for continuous workshop observation without an internal battery.<\/li>\n<\/ul>","protected":false},"featured_media":12334,"comment_status":"open","ping_status":"closed","template":"","meta":{"_gspb_post_css":""},"product_brand":[128],"product_cat":[74],"product_tag":[],"class_list":["post-10701","product","type-product","status-publish","has-post-thumbnail","product_brand-autool","product_cat-engine-pressure-tester","first","instock","shipping-taxable","purchasable","product-type-variable"],"_links":{"self":[{"href":"https:\/\/autoboss.com\/es\/wp-json\/wp\/v2\/product\/10701","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/autoboss.com\/es\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/autoboss.com\/es\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/autoboss.com\/es\/wp-json\/wp\/v2\/comments?post=10701"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/autoboss.com\/es\/wp-json\/wp\/v2\/media\/12334"}],"wp:attachment":[{"href":"https:\/\/autoboss.com\/es\/wp-json\/wp\/v2\/media?parent=10701"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/autoboss.com\/es\/wp-json\/wp\/v2\/product_brand?post=10701"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/autoboss.com\/es\/wp-json\/wp\/v2\/product_cat?post=10701"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/autoboss.com\/es\/wp-json\/wp\/v2\/product_tag?post=10701"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}