{"id":282,"date":"2020-05-10T11:48:06","date_gmt":"2020-05-10T11:48:06","guid":{"rendered":"http:\/\/australianholden.com\/?page_id=282"},"modified":"2026-06-23T06:02:31","modified_gmt":"2026-06-23T06:02:31","slug":"ht-holden-common-issues","status":"publish","type":"page","link":"https:\/\/australianholden.com\/index.php\/home\/h-series\/ht-holden\/ht-holden-common-issues\/","title":{"rendered":"HT Holden Common Issues"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/australianholden.com\/index.php\/australian-holden\/h-series\/\">H Series Home<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/australianholden.com\/index.php\/australian-holden\/h-series\/ht-holden\/\">HT Holden<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/amzn.to\/4ts1ogn\">HK HT HG Repair Manual<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The HT Holden was long, comfortable, simple, and built for real-world conditions rather than refinement or efficiency. But it also introduced subtle updates over the HK, including revised styling, improved interior trims, and a broader range of engines, including the now-iconic Holden V8 options that helped cement its place in Aussie car culture.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Survivors are thinning out, restored examples are climbing in value, and originality is becoming harder to find with each passing year.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">But like all vehicles from this era, time is the great equaliser.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Here are the most common HT Holden problems owners and buyers need to know.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>1. Rust Problems<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Rust is, without question, the biggest issue facing HT Holdens today.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">These cars were built in the late 1960s, before modern corrosion protection became standard, and many lived hard lives in rural Australia, coastal towns, or simply outdoors for decades.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">By now, rust is almost guaranteed somewhere on most surviving examples.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Common rust areas include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>lower doors<\/li>\n\n\n\n<li>rear quarter panels<\/li>\n\n\n\n<li>floor pans<\/li>\n\n\n\n<li>boot floors<\/li>\n\n\n\n<li>chassis rails<\/li>\n\n\n\n<li>windscreen surrounds<\/li>\n\n\n\n<li>sill panels and jacking points<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Utes and wagons tend to suffer the most due to workload and exposure.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Common symptoms<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Bubbling paint along arches or lower panels<\/li>\n\n\n\n<li>Soft or crumbling floor sections<\/li>\n\n\n\n<li>Water leaks into cabin or boot area<\/li>\n\n\n\n<li>Rust hidden under carpets or trim<\/li>\n\n\n\n<li>Heavy filler masking past repairs<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">A solid HT shell is now highly valuable because proper rust repair is labour-intensive and can quickly exceed the value of a rough car.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Related guide<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/australianholden.com\/index.php\/2026\/06\/20\/hk-ht-hg-holden-rust-problems\/\" type=\"post\" id=\"7281\">HK, HT and HG Holden Rust Problems<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/australianholden.com\/index.php\/2026\/06\/20\/how-to-inspect-an-hk-ht-or-hg-holden-before-buying\/\" type=\"post\" id=\"7283\">How to Inspect a, HK, HT, HG Holden Before Buying<\/a><\/li>\n\n\n\n<li>Best Rust Protection Products for Classic Holdens<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>2. Holden Six &amp; Early V8 Engine Wear<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The HT was offered with Holden\u2019s reliable inline-six engines and early versions of the legendary V8, including the 307 and later 253\/308 variants depending on spec and updates.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">These engines are mechanically simple and strong, but after more than 50 years, wear is unavoidable.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Common issues include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>oil leaks from hardened gaskets and seals<\/li>\n\n\n\n<li>worn timing chains<\/li>\n\n\n\n<li>carburettor tuning problems<\/li>\n\n\n\n<li>overheating under load<\/li>\n\n\n\n<li>general loss of compression in tired engines<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Many HT engines have been rebuilt, swapped, or modified, so originality varies widely between cars.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Common symptoms<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Rough idle or hesitation<\/li>\n\n\n\n<li>Hard starting when cold<\/li>\n\n\n\n<li>Excessive oil consumption<\/li>\n\n\n\n<li>Loss of power under load<\/li>\n\n\n\n<li>Engine noise from internal wear<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">The upside is that parts availability remains strong, and these engines are still straightforward to rebuild.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Related guide<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/australianholden.com\/index.php\/2026\/06\/20\/holden-186-engine-issues-explained\/\" type=\"post\" id=\"7268\">Red Engine Problems<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/australianholden.com\/index.php\/2026\/06\/20\/early-holden-v8-issues-explained\/\" type=\"post\" id=\"7285\">Holden Early V8 Issues Explained<\/a><\/li>\n\n\n\n<li>Best Oils for Classic Holden Engines<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>3. Cooling System Problems<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Cooling system issues are one of the most common and preventable problems in HT Holdens.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Radiators clog internally over time, hoses harden and crack, thermostats fail, and water pumps eventually wear out. Once cooling performance drops, overheating becomes a serious risk \u2014 especially in Australian conditions.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Many HTs are still running original or decades-old cooling components.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Common symptoms<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Rising temperature in traffic<\/li>\n\n\n\n<li>Coolant leaks under vehicle<\/li>\n\n\n\n<li>Steam from engine bay<\/li>\n\n\n\n<li>Sweet smell of coolant<\/li>\n\n\n\n<li>Heater not working properly<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Overheating an old Holden engine can quickly escalate into serious mechanical damage.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Related guide<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/australianholden.com\/index.php\/2026\/06\/20\/hk-ht-hg-holden-cooling-system-problems\/\" type=\"post\" id=\"7287\">HK, HT and HG Holden Cooling System Problems<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/australianholden.com\/index.php\/2026\/06\/20\/hk-ht-hg-holden-radiator-upgrade-guide\/\" type=\"post\" id=\"7289\">HK, HT and HG Radiator Upgrade Guide<\/a><\/li>\n\n\n\n<li>Best Coolants for Classic Holden Engines<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>4. Transmission Wear (Powerglide &amp; Trimatic Variants)<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The HT used early automatic transmissions such as Powerglide and later Trimatic units depending on engine and model.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">These transmissions were simple and durable for their time, but decades of use and neglect eventually lead to wear.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Many HT Holdens have lived long, hard lives:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>towing caravans and trailers<\/li>\n\n\n\n<li>city driving with constant gear changes<\/li>\n\n\n\n<li>long-distance highway cruising<\/li>\n\n\n\n<li>minimal transmission servicing over decades<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">As a result, issues are now extremely common.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Common symptoms<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Slipping gears under acceleration<\/li>\n\n\n\n<li>Delayed engagement when shifting<\/li>\n\n\n\n<li>Harsh or inconsistent gear changes<\/li>\n\n\n\n<li>Transmission fluid leaks<\/li>\n\n\n\n<li>Shuddering at speed<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">A properly rebuilt transmission can completely transform drivability.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Related guide<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/australianholden.com\/index.php\/2026\/06\/20\/hk-ht-hg-holden-transmission-problems\/\" type=\"post\" id=\"7291\">HK, HT, HG Holden Transmission Problems<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/australianholden.com\/index.php\/2026\/06\/20\/powerglide-trimatic-issues-explained\/\" type=\"post\" id=\"7309\">Powerglide &amp; Trimatic Issues Explained<\/a><\/li>\n\n\n\n<li>Best Transmission Fluids for Classic Holdens<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>5. Suspension &amp; Steering Wear<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The HT still delivers that classic big Holden feel \u2014 soft, floaty, and relaxed \u2014 but worn suspension components can make them feel loose and unpredictable.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">After more than five decades, most HTs now suffer from worn:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>shock absorbers<\/li>\n\n\n\n<li>control arm bushes<\/li>\n\n\n\n<li>steering linkages<\/li>\n\n\n\n<li>sway bar components<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Cars that were used for towing or rural work tend to show more severe wear.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Common symptoms<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Wandering steering on the highway<\/li>\n\n\n\n<li>Clunking noises over bumps<\/li>\n\n\n\n<li>Uneven tyre wear<\/li>\n\n\n\n<li>Excessive body roll in corners<\/li>\n\n\n\n<li>Steering vibration at speed<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">A full suspension refresh is one of the best upgrades for safety and drivability.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Related guide<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/australianholden.com\/index.php\/2026\/06\/20\/hk-ht-and-hg-holden-suspension-problems\/\" type=\"post\" id=\"7297\">HK, HT, HG Holden Suspension Problems<\/a><\/li>\n\n\n\n<li>Best Suspension Upgrades for HK, HT, HG Holden<\/li>\n\n\n\n<li><a href=\"https:\/\/australianholden.com\/index.php\/2026\/06\/20\/hk-ht-and-hg-holden-steering-system-repair-guide\/\" type=\"post\" id=\"7301\">HK, HT, HG Steering System Repair Guide<\/a><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>6. Electrical Problems<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Electrical systems in early Holdens were simple, but time and modifications introduce problems.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In the HT, wiring looms, switches and connectors are now well beyond their intended lifespan. Add decades of aftermarket accessories and repairs, and electrical issues become very common.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Common issues include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>charging system faults<\/li>\n\n\n\n<li>faulty gauges or dash lights<\/li>\n\n\n\n<li>intermittent starting issues<\/li>\n\n\n\n<li>blown fuses<\/li>\n\n\n\n<li>poor earth connections<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Common symptoms<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Flickering lights<\/li>\n\n\n\n<li>Flat batteries after sitting<\/li>\n\n\n\n<li>Gauges behaving incorrectly<\/li>\n\n\n\n<li>Random electrical faults<\/li>\n\n\n\n<li>Starter motor inconsistencies<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Many issues come down to grounding problems rather than failed components.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Related guide<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/australianholden.com\/index.php\/2026\/06\/20\/hk-ht-and-hg-holden-electrical-problems\/\" type=\"post\" id=\"7303\">HK, HT, HG Holden Electrical Problems<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/australianholden.com\/index.php\/2026\/06\/16\/early-holden-starting-issues-guide-diagnosing-hard-starting-no-start-and-intermittent-problems\/\" type=\"post\" id=\"7217\">Early Holden Starting Issues Guide<\/a><\/li>\n\n\n\n<li>Best Battery Upgrades for Classic Holdens<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>7. Oil Leaks<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Oil leaks are practically part of classic Holden ownership at this point.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In the HT, ageing seals and gaskets are the main cause, with leaks developing slowly over decades of heat cycles.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Common leak areas include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>rocker cover gaskets<\/li>\n\n\n\n<li>sump gaskets<\/li>\n\n\n\n<li>rear main seals<\/li>\n\n\n\n<li>timing cover seals<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Common symptoms<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Oil spots under the vehicle<\/li>\n\n\n\n<li>Burning oil smell after driving<\/li>\n\n\n\n<li>Dirty engine bay and underbody<\/li>\n\n\n\n<li>Smoke near exhaust components<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Small leaks are common, but larger leaks should always be addressed before they worsen.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Related guide<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/australianholden.com\/index.php\/2026\/06\/20\/holden-red-engine-oil-leak-guide-2\/\" type=\"post\" id=\"7247\">Red Engine Oil Leak Guide<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/australianholden.com\/index.php\/2026\/06\/20\/early-holden-v8-oil-leak-problems-explained\/\" type=\"post\" id=\"7306\">Early Holden V8 Oil Leak Problems Explained<\/a><\/li>\n\n\n\n<li>Best Engine Oils for Classic Holden Engines<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>8. Interior Wear &amp; Ageing Trim<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">HT interiors were built for durability, not preservation over half a century.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">After decades of Australian sun and use, most interiors show significant wear unless restored.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Common issues include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>cracked dashboards<\/li>\n\n\n\n<li>sagging roof lining<\/li>\n\n\n\n<li>faded or brittle plastics<\/li>\n\n\n\n<li>worn seat upholstery<\/li>\n\n\n\n<li>loose interior trim<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Utes and wagons are typically the worst affected, while Monaro interiors often survive slightly better due to more careful ownership.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Common symptoms<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Sun-damaged dashboard surfaces<\/li>\n\n\n\n<li>Interior rattles and loose panels<\/li>\n\n\n\n<li>Sagging headliner<\/li>\n\n\n\n<li>Torn or faded seats<\/li>\n\n\n\n<li>General cabin ageing<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Good original interior components are becoming increasingly rare and valuable.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Related guide<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/australianholden.com\/index.php\/2026\/06\/16\/early-holden-interior-restoration-guide\/\" type=\"post\" id=\"7225\">Early Holden Interior Restoration Guide<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/australianholden.com\/index.php\/2026\/06\/16\/early-holden-roof-lining-repair-guide\/\" type=\"post\" id=\"7227\">Early Holden Roof Lining Repair Guide<\/a><\/li>\n\n\n\n<li>Best Interior Products for Classic Holdens<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Is the HT Holden Reliable?<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For a vehicle built in 1969, the HT Holden is still impressively tough when maintained properly.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Its mechanical simplicity is a major advantage, and most issues are predictable, age-related, and well understood within the classic Holden community.<\/p>\n\n\n<div id=\"fu_ebay_0\"><!-- Presentation: cols = 4, rows = 2, slideshow = Manual, slides = 3, slideId = 0 --><div class=\"fu_ebay_results_container \">\n<h5 class=\"fu_ebay_results_title\" style=\"display: block !important;\">\n<a name=\"fu_slidetop_0\"><\/a><a href=\"https:\/\/www.ebay.com.au\/?mkcid=1&#038;mkrid=705-53470-19255-0&#038;siteid=15&#038;campid=5339152561&#038;customid=5339151688&#038;toolid=10049&#038;mkevt=1\" class=\"fu_ebay\" style=\"display:inline !important;\" rel=\"nofollow\" target=\"_blank\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/australianholden.com\/wp-content\/plugins\/fast-ebay-listings\/US\/Right_Now_108x45.gif?resize=108%2C45&#038;ssl=1\" style=\"border:0;display:block !important;\" width=\"108\" height=\"45\" alt=\"Right Now on eBay\"\/><\/a>&nbsp;HT Holden<\/h5>\nLoading&#8230;<\/div>\n<\/div>\n<script>\n<!--\nvar content_fu_ebay_0 = null;\nvar waitForDepends_fu_ebay_0 = setInterval(function () {\n  if (typeof jQuery !== \"undefined\") {\n  if (window.fu_is_bot_useragent !== undefined) {\n    clearInterval(waitForDepends_fu_ebay_0);\n    if (typeof jQuery.ajax == \"undefined\") {\n      console.log(\"Fast eBay Listings: jQuery.ajax missing. 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But it also introduced subtle updates over the HK, including revised styling, improved interior trims, and a broader range of engines, including the now-iconic Holden V8 options that [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":582,"parent":31,"menu_order":7,"comment_status":"closed","ping_status":"closed","template":"","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_uf_show_specific_survey":0,"_uf_disable_surveys":false,"footnotes":""},"class_list":["post-282","page","type-page","status-publish","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>HT Holden Common Issues - Australian Holden<\/title>\n<meta name=\"description\" content=\"The HT Holden was long, comfortable, simple, and built for real-world conditions rather than refinement or efficiency.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/australianholden.com\/index.php\/home\/h-series\/ht-holden\/ht-holden-common-issues\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"HT Holden Common Issues - 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