There is a heater control valve on the 1999 Ford Ranger. There is no thermal vacuum valve on this year of the vehicle.
Yes, there is a vacuum diagram for the Ford 4.0. Some of these diagrams can be found by doing an internet search.
The diagrams of the different systems in a 1997 Ford Ranger can be found in a Ranger service manual. The manual is available for purchase in most auto parts.
Buy a repair manual like Chilton's they have wiring and vacuum diagrams.
can you show a diagram of the vacuum hoses for the 1994 ford explorer with a v6 4.0L pushrod engine?
What is a a/cl dv on a 1992 ford ranger xlt vacuum line
In the owners manual
You can get a 2006 Ford Ranger body part diagram at your local auto parts store. Another option is to contact the Ford dealership.
A vacuum leak on a 1999 Ford Ranger can be located using an automotive stethoscope. It can then be move around the engine to detect the sucking noise of a leak.
autozone.com gives you access to free online repair manuals. You just enter your vehicle information and log on and you can use them anytime. You can print out the diagrams too
Most repair manuals have the wiring diagrams in them.
Haynes Manuals have all diagrams for the ranger including the one you seek