Well the weather in Tulsa finally got down into single digits and my truck takes forever to turn over. Actually, it's always been like this when it gets cold. My grandpa had a 98 and 04 Ford. I had an 93 Ford and 04 Ram and I don't remember this being a problem with those models. Is this a common problem in the 5.4's?


Also, is it possible to install an engine block heater on a 09 F150? How much hassle and money would it take?

 

I've never had to add a block heater because they are standard on trucks up hear but it can be done. The easier of the two options would be to get the type that goes inline with a radiator hose. Installing the factory type is a little more involved and expensive.

 

You shouldn't need a block heater at single digits.

Check the battery they lose power in cold weather especially when they get old. An easy test is to turn on some lights before you turn over the motor and if the lights start to dim while the starter is cranking then your battery's the problem.

If you think the block heater will help you then I agree with what fordman says about the radiator hose element being a pretty easy install but like I said I don't think that's addressing the underlying issue.

If you're looking for an easy fix another thing you can do is get a magnetic block heater that sticks to any metal surface like the bottom of the oil pan. And you can play around with it like mounting it on the bottom of your battery tray or use it for other stuff like thawing frozen locks and starting small engines in bad weather. I'd get that before I start cutting open a radiator hose for a truck that doesn't really need a block heater.

Kat's Handi-Heat Magnetic Heater — 300 Watt, Model# 1160 | Engine Heaters Blankets| Northern Tool + Equipment

 

My 2010 at work has always "started hard" even with a new battery.

Not sure why, but when it is cold like that it seems like it just barely gets that first cylinder to break over, then it starts spinning and starts. And this is with a brand new battery. Using the block heater helps, but it always has a hard time getting that first compression stroke to pop over.

 

Starter shouldn't be having a hard time at single digits.

Try cleaning the connections and check the cables with a multimeter.