Thermostat - 4.2L: Installation
WARNING: This page is about a different car, the 2007 Lincoln Mark LT and 2007 Ford Pickup. However, it is still accessible from the selected car via links, so may be relevant.
- Clean the gasket mating surfaces with a plastic scraper and metal surface prep. Follow the directions on the packaging.
- Install the thermostat in the thermostat housing and rotate the thermostat either clockwise or counterclockwise to engage the cam on the thermostat securely. The thermostat vent must be located either at the 11 o'clock or 1 o'clock position.
- Thermostat vent shown at 11 o'clock.
- Thermostat vent shown at 1 o'clock.
- Position a new gasket and the thermostat housing and install the bolts. Tighten the bolts in 2 stages.
- Stage 1: Tighten to 8 N.m (71 lb-in).
- Stage 2: Tighten an additional 60 degrees.
- Connect the upper radiator hose and position the clamp.
- Fill and bleed the cooling system. For additional information, refer to Cooling System Draining, Filling and Bleeding in this article.
CAUTION:
Do not use metal scrapers, wire brushes, power abrasive discs or other abrasive means to clean the sealing surfaces. These may cause scratches and gouges resulting in leak paths. Use a plastic scraper to clean the sealing surfaces.
NOTE:
The thermostat is indexed and must be installed as shown.