Ford Tough - Home of Canadian Ford Truck Enthusiasts banner
1 - 5 of 5 Posts

Discussion Starter · #1 ·

I' Having problems with my 1999 F150 4.6L
Every time I accelerate to pickup speed the truck feels like it's stuttering or
missing, but when I accelerate slowly nothing happens or it is barely noticeable.
I need help.

Thank You


· Premium Member
3,918 Posts
Could be a coil pack I think 99's had 2 coils on the front of the engine and later on switched to COP's like the 5.4 first I would scan the truck, then check the coils and fuel pressure and go from there

· Registered
257 Posts
I'd check the PCV Elbow at the back of the intake manifold,
look for a pinhole in the rubber elbow that plugs into the back of the intake manifold. If that's what it is it's a dealer item about 48.00 trouble code to accompany that might be a P-0171 and P-0174 Left and Right Banks running too lean.
A temporary fix is clean the elbow (carefully) then wrap it with thin strips of Duckt Tape about 3" long.
Good Luck and let us know how you did.
Oh and Welcome to the forum.
1 - 5 of 5 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.