04 F150

Went out to eat last night in my sis 04 5.4 truck was runing perfect! Slowed down for a red light and the truck shook pretty bad at every light. So i limped home.
Now the truck shakes when at idle or coming to a stop, shakes at higher speeds but not as bad.

Any ideas what could make this happen?

larryc251

Is it misfiring?

HardcoreFx4

Coils plugs. Any check engine lights?

larryc251

What Brandon said. Could be coils or plugs, could even be bad gas.

04 F150

Yes check engine light came on havent checked the codes yet... As for gas brother n law filled it up saturday with 93 oct (thinking he was in his Harley)

HardcoreFx4

Yeah I always run 91 or 93 when I can get it. Ive had my truck over a year and hasnt had anything but 91 in it. More mpg and power if you ask me.

larryc251

Just take it to auto zone an let them put the computer on it. They can tell you real quick what's going on

04 F150

Ill take it this afternoon to check the codes.... Might do a tune up while at it and empty the gas tank
Thanks guys

2005lariat5.4

Coils and plugs. Same thing happened to me.

04 F150

Bought new plugs and ordered the coils