Standard Ignition TS-199 Engine Coolant Temperature Sender

Engine Coolant Temperature Sender for Jeep Gauges

Standard Ignition TS-199 is an engine coolant temperature sender built for vehicles with gauge-equipped cooling systems. It uses a bolt-on attachment, a round male connector, and a stud-style terminal for a direct electrical connection in the cooling circuit.

Key Features

• Bolt-on attachment method for secure mounting
• Round male connector with one connector interface
• Male stud terminal with one terminal connection
• Factory-calibrated and tested for specified switch actuation temperature
• Uses a bimetal contact design for precise electrical switching
• Built with high-grade materials for service use

Product Details

Standard Ignition TS-199 is an engine coolant temperature sender designed to monitor coolant temperature and trigger the electrical signal used by the fan controller or gauge circuit, depending on the application. The internal thermal switching design uses calibrated wax and bimetallic contact movement to provide consistent actuation at the specified temperature point. This part cross-references Dayco 85007 for the same application. Compatible With 1987-1992 Jeep Comanche, 1987 and 1991 Jeep Cherokee, and 1987-1990 Jeep Wagoneer with gauges. If you are replacing a Jeep Cherokee temperature sender or sourcing a Jeep Comanche coolant temperature sender, TS-199 is built to match the listed gauge-equipped applications.

Common Symptoms It May Address

• Inaccurate coolant temperature gauge readings
• Temperature gauge that stays low or reads erratically
• Cooling fan control signal issues tied to sender operation
• Intermittent electrical contact at the temperature sender
• Replacement need after corrosion or thermal switch wear

Installation Notes

Verify the connector style, terminal type, and mounting method before installation. Clean the mounting surface and inspect the harness connector for corrosion or looseness. Confirm the vehicle is one of the listed Jeep applications with gauges before ordering, including 1987-1992 Jeep Comanche, 1987 and 1991 Jeep Cherokee, or 1987-1990 Jeep Wagoneer.

Quality Assurance

Standard Ignition manufactures this sender with complete quality control from component selection through final testing. Each unit is calibrated and tested to confirm switch actuation at the specified temperature, and the thermal contact design is factory set for consistent electrical performance.