Thermostat problems and solutions – Ford Transit

Published:  25 March, 2021

Dayco offers some answers around the thorny issue of thermostat problems aboard the trusty Ford Transit 

Despite the obvious popularity of the Mercedes Sprinter, VW Transporter and Vauxhall Vivaro, the Ford Transit is far and away the most common panel van in the UK, with around a million examples traveling the length and breadth of the country. Although generally very reliable, it’s not uncommon for some versions to appear to go into limp mode, without displaying any problems through the warning lights on the dash board. Common symptoms of this phenomenon include lumpy running when at idle, power loss and difficulty when faced with hills, as well as sometimes giving fluctuating readings of the temperature gauge.

These issues can often by misdiagnosed as a blocked air intake, turbo fault or EGR valve malfunction, when in fact it’s a faulty thermostat. Due to the complex makeup of the modern engine, this relatively simple component is often overlooked, but in reality, should be one of the first things to consider as thermal management is now crucial to the correct operation of the engine, not to mention its exhaust emissions.


Although the thermostat in the Transit example mentioned is contained in a housing, it’s the thermostat valve that is usually the problem and Dayco offer this part DT1016V in its comprehensive thermostat range, which makes up part of its thermal management programme.

Effective thermal control in all areas of the engine from initial start-up until reaching its designed operating temperature, whether in hot spots such as around the cylinder head or cooler zones elsewhere, is vital in order to maintain the vehicle manufacturers’ claimed emissions figures. In order to operate within these strict performance parameters and their expected service life, OE quality replacements must be the benchmark.

Dayco’s extensive technological know-how and drive to ensure its products deliver to the highest levels of performance means that a combination of precision couplings and quality materials has enabled the company to supply a comprehensive range of thermostats that are of OE standard in their quality, safety, efficiency and durability.

For more information regarding OEM quality thermostats or the power transmission products in the Dayco range, visit: www.daycoaftermarket.com

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