Engine swap trouble

Reply Subscribe

Thread Tools

Search this Thread

Aug 9, 2019 | 10:13 PM

bumper.45acp

Thread Starter

Senior User

Joined: Dec 2007

Posts: 100

Likes: 0

Engine swap trouble

I have an 02 f150 super crew 5.4. Had to have the motor replaced and due to my schedule I had someone else do it. It was also a used engine but I put several miles on the donor before it was pulled. Motor came out of a 99 expedition, he swapped my intake onto the expedition motor. Now you are all caught up
Truck misses horribly and has no power. Shows a lean bank 2 p0174 code and nothing else. Stft numbers point to a vacuum leak but I cant find one anywhere. Hoping to get my hands on a smoke machine to be more thorough.
I am wondering if the expedition might have had a non pi motor and with my pi intake being swapped on, if that's not the problem? How can I tell just by looking if it's a non pi motor?

Aug 10, 2019 | 11:04 AM

70f100longbed

Fleet Mechanic

Joined: Aug 2002

Posts: 1,900

Likes: 29

From: Raleigh USA

The intake ports are squarish for PI heads and round for non-PI heads. How are the plugs and coils? Any other codes besides p0174?

Aug 10, 2019 | 12:08 PM

bumper.45acp

Thread Starter

Senior User

Joined: Dec 2007

Posts: 100

Likes: 0

Plugs and coils are new. No other codes. They took the aluminum non pi intake off and put my pi intake on the engine.

Aug 10, 2019 | 12:39 PM

70f100longbed

Fleet Mechanic

Joined: Aug 2002

Posts: 1,900

Likes: 29

From: Raleigh USA

Quote:

Originally Posted by bumper.45acp

They took the aluminum non pi intake off and put my pi intake on the engine.

That will do it right there. I'm surprised they even did the swap being it is the wrong engine. I would make them do it again but with the correct engine this time. Make sure you check behind their work too I bet there are bolts missing, loose, wrong spot, etc.

Aug 25, 2019 | 09:50 AM

bass-n-fire

Tuned

Joined: Nov 2006

Posts: 455

Likes: 2

I did the same thing with my daughters truck, older non PI motor in an 03. Used the non PI intake. Older motor had coil packs, original motor had individual coils. I did not not do the coil packs with the motor swap. Motor runs rough as crap with no power. That’s why I’m now rebuilding her original motor.

Sep 1, 2019 | 10:29 AM

Chevy_Eater

Logistics Pro

Joined: Apr 2005

Posts: 4,221

Likes: 17

Anyone care to elucidate for me just what a PI intake is? The only PI automobile acronym I'm aware of is the police interceptors when it comes to Crown Vics. I cannot find what it is when it comes to a 5.4L in a pickup?
TIA!