I'm not sure what section to post this in since I have a few different questions. a little background on my truck it is a 2004 F150 Lariat with a 5.4 3 Valve and only 39,000 miles. My truck sat in my mom's backyard from 2006 until 2 weeks ago. It was my step father's truck and was left to me when he passed. In 2009 I built the truck in memory of him, but it continued to sit in storage because I was in the military. It saw an occasional road trip when I came home. The truck has a 3/5 drop, afe intake, bbk throttle body, magnaflow high flow cats w/custom y pipe and 3 in exhaust dumped before the axle, and a superchip flashpaq. I went to pick up the truck and mice and rabbits had a field with my electrical. I had to replace the main electronic harness for the trans because it was chewed through. Now on to my questions. I ran a scanner on my truck due to check engine light being on. I know I have to replace the cht sensor and harness and knock sensors because I can see the harnesses are chewed through. Do I need to pull the alternator and coolant crossover to get the manifold out? I also have a code for the motion charge plates. What exactly do these do? Should I plan on replacing the spark plugs while the intake is off and apart? would it benefit me to open the manifold to match the throttle body? also should I look into doing a custom tune instead of the canned tune?

 

Post your codes.

 

I can see the cht harness and knock sensor wires are chewed through. I will post the codes once I get home and can look at my notes on the truck

 

might want to get a wire harness from the wrecking yard...imo

those little critters are going to drive you nuts with all that's been chewed...

 

I have the knock sensors cht sensor and gaskets on order. Ordered new plugs. I also got the cht jumper harness from a friend free

 

I have the knock sensors cht sensor and gaskets on order. Ordered new plugs. I also got the cht jumper harness from a friend free, he had it laying in his tool box. I'm anxious to see what's laying between the intake and firewall.

 

got the truck in the garage. had to pull in at an angle. then I jacked up the rear and slid it sideways.

 

Parts arrived today..

 

Why are you putting HT0's in it?

 

Is there a reason not to use them? I ordered them due to price. Summit racing said they would fit amd work.

 

Heat range is too cold for a NA engine. You should be using Motorcraft SP-515.

 

I know of 3 different people with N/A engines and these plugs and no issues. 2 are mustangs and one is another 5.4 F150. according to what info I have found on these plugs is they are only one step colder than stock. thanks for the heads up, but I going to go ahead and run them

 

Make sure you use high temp nickel antiseize on the shanks and pull them often - cold plugs will cause carbon issues!