1999 Ford F-150 Repair Question
Topics covered: Intake manifold, Fuel injection, Engine.
Mileage: No information provided.
Mileage: No information provided.
Asked on April 1, 2009
1999 Ford F150 Location of the IAC unit on the intake manif
Engine Mechanical problem
1999 Ford F150 V8 Two Wheel Drive Automatic 203000 miles
Where is the IAC unit on the intake manifold located at of a 1999 Ford F150?
1999 Ford F150 V8 Two Wheel Drive Automatic 203000 miles
Where is the IAC unit on the intake manifold located at of a 1999 Ford F150?
Answer
Replied on April 1, 2009
4.2L , 4.6L or 5.4L engine ?
Replied on April 1, 2009
Where is the IAC unit on the intake manifold located at on a 1999 Ford F150 V8 5.4 L Automatic?
Replied on April 1, 2009
It is located on the left side of the intake manifold, pictured below..

Thanks for using 2CarPros.com!
Replied on April 3, 2009
What does the intake manifold look like and how do you clean it for a 1999 Ford f150 v8 5.4
Replied on April 3, 2009
Example pic of intake manifold is below..

A few different things to do to clean out your intake manifold are below:
Simply use some air intake system cleaner. Then use a product called BG Fuel Injection System Cleaner. Get a can tap (like an A/C freon can tap) and open a non-pressurized can of Fuel Injection System Cleaner. Take the end of the hose (attached to the can tap) and attach it to the vac. port that's right after the throttle body. The hose has a .025 orifice and lets the Fuel Injection System Cleaner vaporize into your manifold over the course of about 10 mins (12 oz. can).
After this try some fuel additive.
Thanks for using 2CarPros.com!