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Performance Specialists Since 1963

Bosch Retrofit Cold Start Thermo Time Switch

Bosch - F026T03100 - 1219731 - 141267

Sale Price:$156.49
Available to Order
Typically available to ship within two weeks
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1219731, 232036005019C

Product Description


The thermo-time switch helps with cold starting by completing the circuit to the cold-start injector when cold, adding more fuel to the mix similar to pulling the choke when cold-starting a carbureted car.

The thermo-time switch grounds the cold start valve circuit when cold. There is an bi-metal strip (thermal contact) inside the thermo-time switch that will disconnect the ground connection for the cold start valve at a specific temperature.  The bimetallic strip has a heating coil around it, so the switch opens on a sliding time scale based on temperature: as long as 8 seconds at -20 celsius, but it heats up faster and thus opens sooner when the engine isn't as cold.

This switch is made by Bosch, rather than the OES for Volvo, VDO. It's used in VW/Audis and BMWs, and the shape of the connector is slightly different, but it's compatible with the Volvo style connector and has the same threads, temperature operating range, and activation time. As the VDO switch is discontinued, this is a good retrofit option to get your car back to healthy cold starts.

About Bosch

Bosch is a trusted world-renowned original equipment manufacturer (OEM) and parts supplier for almost every major manufacturer. IPD carries a wide variety of Bosch Volvo Parts branded parts for Volvo including ignition coils, distributor caps and rotors, spark plugs, rebuilt distributors, and other ignition and electrical sensor products.

Bosch is a trusted source by many vehicle manufacturers, including Volvo, and others for their superior quality to other OEM suppliers and their long history or excellence. Bosch is the largest automotive parts organization in the world and is OEM to many of the top European, Domestic and Asian manufacturers.

Bosch earned its name and reputation in the industry by being the top source for engine management components such as ECU’s, starters, alternators, plugs, spark plugs, electrical components, oxygen sensors, fuel delivery parts and injection components. Along with those OEM and OES products they also have complete aftermarket programs in automotive filtration, brakes, HVAC management, along with a multitude of other programs.

IPD also supplies a wide range of OEM Bosch and OES Bosch products in brakes, filters, and many others. IPD supplies Bosch Volvo parts and also offers Bosch branded Audi parts, BMW parts, Mercedes parts, Mini parts, Saab parts, Volkswagen parts and more.

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