0
Remove the vacuum hose from the modulator valve. If you see any fluid in the valve or the hose, it is defective.
Wiki User
∙ 16y ago
Add your answer:
Earn +20 pts
Blowback though air filter 1991 ford f150 5.0?
Blowback into a 91 F150 air filter could be caused by a bad PCV valve. Check the valve for it being stuck in the open position.
Were is the PCV valve on a 1992 f150 with the 5.0 in it?
where is the pcv valve on a 1992 f150 with 5.0 liter
Where is the egr valve located on a 1979 f150 with a 302?
The EGR valve on a 1979 F150 with a 302 is located in the center of the engine. It is close to the firewall.
Where is the modulator valve on 1990 ford f150 4x4?
Most modulator valves are on the rear of the transmission. It should not be that hard to find due to the fact that it has a vacuum line attached to it. It controls the transmission shifting off engine vacuum. Also if it is bad it will pull transfluid out of the transmission and burn it off thur. the engine, this is noted with white smoke from the tail pipe.
Where do the transmission vacuum hose for a 1987 ford f150 go to?
The Vacuum line for an automatic transmission runs from the modulator valve on the rear of the transmission to a vacuum port on the intake of the engine. Any available port will do as long as it is on the intake, not the carburetor if so equipped.
How do you check the fuel pressure on 94 Ford F150 302?
There is a schrader valve on the fuel rail. It ought to have a black cap on it that you twist off.
Where is the EGR valve located in a 2001 ford f150?
PCV Valve is located on the Right Valve Cover.
What is valve of f 150 1986 truck?
what is valve of ford truck F150 1986
What is wrong with a 1987 ford F150 if it starts to shift at a very high rpm?
I would start by looking for worn vacum line to modulator. Or the modulator could be bad. the modulator is located on the transmission which tells the transmission to shift when the vacum pulls a diaphragm inside the modulator a certain distance. some are adjustable with a flat blade screw i believe.
2006 f150 acts like I'm not getting vacuum to brake booster?
check vaccuum hose for blockage . also check egr valve if both are good, replace vaccuum booster
How do you check cool temp sensor on a 5.8l f150?
How do you check cool temp sensor on a 5.8l f150?
Where is the PCV valve on a 2004 f150 5.4l?
I have a 2004 Ford truck F150 V8 5.4 L .. do I need to replace the PCV valve that is causing bad back up condensation
