Rough Idle Question
98 F150 5.4L E40D/4R100
Joined: Nov 2006
Posts: 28,532
Likes: 7,638
From: MI
I used platinum spark plugs. Can't remember the exact brand. I just checked the MAF sensor and it doesn't appear to be fouled up or anything. I still have power over 45 mph, but it feels like the engine starts shuddering when it gets to those speeds. I'm about to have the oil and air filter changed as well since it's about that time, but I just want this thing to run smoothly.
The exact brand matters. Guess that doesn't matter to you lol. Says what to use right in the owners manual. Yea, I can't help if your THAT forgetful or careless. Perhaps someone will guess it right for yuh.
Regardless,
Good Luck!
Last edited by Jbrew; May 16, 2015 at 10:52 PM.