the new guy has a question

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

tsoza1986

Member
Joined
Dec 5, 2014
Posts
6
Reaction score
2
Lol i chased that same problem with mine. Fuel injector was bad been running great since i fixed it 6 months ago
 

Aspitler24

Member
Joined
Apr 5, 2020
Posts
10
Reaction score
0
Location
Tennessee
Hi! I see this thread has been dead for quite a while but it’s the closest symptoms to my 2001 expedition 5.4L V8 that I have found so far when researching my problem.

Mine also has a rough idle, big loss in acceleration, it kind of “lurches” at times, gas mileage went all the way to about 5 mpg, etc. Also it has a constant, sometimes flashing CEL light. My scan tool showed two misfire codes- PO303 and 307. Also a pending code PO1405 which i found on here and it said it was a DPFE Sensor Upstream Hose Off Or Plugged.
A few weeks after the CEL light came on and it had the above symptoms, I noticed it was leaking coolant. I saw a very small amount leaking towards the top of the engine when it was running and I had to add coolant to the reservoir.
I thought it was most likely a coil pack or spark plug but does the coolant leak mean something different, or are those most likely two separate issues?
 
Top