5.0L (1979-1995) MustangTechnical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.
Sponsored by Weld Racing
Welcome to Mustang Forums!
Welcome to Mustang Forums.
You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!
91 5.0 LX, car doesn't seem to warm up properly, even after 30 min of driving, the gauge is still pretty much pegged at the bottom. I have noticed that the radiator stays cool and the upper radiator hose is also cool to the touch. The recirc lines at the back of the engine that go to the throttle body are hot, and so are the heater in/out hoses. Not sure if its related, but the engine cooling fan runs constantly, its on whenever the car is running.
Car has new water pump and thermostat & housing, and both coolant sensors/sender are new. Any ideas as to why its not getting hot up front?
I'm trying to figure this out at home, so I haven't been able to pressure test it. Would trying a new radiator cap make a difference?
This ad is not displayed to registered or logged-in members. Register your free account today and become a member on Mustang Forums!
This forum is owned and operated by Internet Brands, Inc., a Delaware
corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford
Motor Company or its related companies in any way. Ford® is a registered trademark of the Ford Motor