Bon Do
Member
Hi guys,
I have been on the forums have read a few threads that solved problems I have had with this Expedition but now I am currently confused and can't seem to fix an issue I am having.
I purchased my 2002 Expedition 5.4 with 136,*** miles from a friend of mine. When going on a test drive, I attempted to accelerate up a hill @ 45 mph and the car became to shudder and shake until I gave it more gas and it would downshift to the previous gear, RPM would go up and it would be fine. I assumed it was bad gas or low fuel as the tank was on E. After fill up, the hesitation would continue after any slight acceleration @ 45mph. I had assumed it was an engine misfire but I could not get the CEL to illuminate.
Fast forward two weeks later going up another hill, I FINALLY got the CEL to go off and received a P0305 code! I cleared the code, switched ignition coil on cylinder 5 and 1 and hoped the CEL would illuminate again but on 1. The car continued to shuddered and hesitate but the CEL would not go off.
On May 11, 2018 I bought 8 Motorcraft SP-479 Spark Plug and gaped them to .054. Let me tell you, it took me 5 1/2 hours and it was a PITA! When changing the spark plugs, I can tell they were the originals as there were dirt and tips were semi burnt and the ignition coils didn't have dielectric grease so I had to use pliers to pull them out. The spark plug wells were bone dry no water, coolant, or oil. I cleaned all spark plug wells, put nickel anti seize on the threads, applied dielectric grease on the boots, and reinstalled.
I went for a test drive and everything seemed well until I went up a hill and it did it again! I went to O'Reily's today and bought one ignition coil (Master Pro) to see if it would help. I put in Cylinder 5 and 1 and the problem persists. I returned the product as the ignition coils are not the issue.
I was very confused at this point until I ran a mode 6 on my OBD2 scanner and went to Test $53 to see the misfires in my ECM and sure enough, cylinders 1,2,3,4,6,7,8 had ZERO misfires but cylinder 5 had 203. The misfires seems to happen while I am driving but no on startup or idle. My engine sounds great, my idle while in D is @ 600 and the RPM needle stays consistent and doesn't bounce. My hesitation issue ONLY happens I am accelerating or trying to under load and it would shudder @ around 45 MPH.
I have attached a few pics! I am assuming at this point it is a fuel injector related problem. There are no vacuum leaks or leaks anywhere on the car it sounds terrific! Please help!
I tried upload pics but it wouldn't work. I attached the picture to this link It shows the Freeze frame of when the hesitation occurred, mode 6 Test $50, $53, $54, $55, and $56. Any help is appreciated thanks!
I have been on the forums have read a few threads that solved problems I have had with this Expedition but now I am currently confused and can't seem to fix an issue I am having.
I purchased my 2002 Expedition 5.4 with 136,*** miles from a friend of mine. When going on a test drive, I attempted to accelerate up a hill @ 45 mph and the car became to shudder and shake until I gave it more gas and it would downshift to the previous gear, RPM would go up and it would be fine. I assumed it was bad gas or low fuel as the tank was on E. After fill up, the hesitation would continue after any slight acceleration @ 45mph. I had assumed it was an engine misfire but I could not get the CEL to illuminate.
Fast forward two weeks later going up another hill, I FINALLY got the CEL to go off and received a P0305 code! I cleared the code, switched ignition coil on cylinder 5 and 1 and hoped the CEL would illuminate again but on 1. The car continued to shuddered and hesitate but the CEL would not go off.
On May 11, 2018 I bought 8 Motorcraft SP-479 Spark Plug and gaped them to .054. Let me tell you, it took me 5 1/2 hours and it was a PITA! When changing the spark plugs, I can tell they were the originals as there were dirt and tips were semi burnt and the ignition coils didn't have dielectric grease so I had to use pliers to pull them out. The spark plug wells were bone dry no water, coolant, or oil. I cleaned all spark plug wells, put nickel anti seize on the threads, applied dielectric grease on the boots, and reinstalled.
I went for a test drive and everything seemed well until I went up a hill and it did it again! I went to O'Reily's today and bought one ignition coil (Master Pro) to see if it would help. I put in Cylinder 5 and 1 and the problem persists. I returned the product as the ignition coils are not the issue.
I was very confused at this point until I ran a mode 6 on my OBD2 scanner and went to Test $53 to see the misfires in my ECM and sure enough, cylinders 1,2,3,4,6,7,8 had ZERO misfires but cylinder 5 had 203. The misfires seems to happen while I am driving but no on startup or idle. My engine sounds great, my idle while in D is @ 600 and the RPM needle stays consistent and doesn't bounce. My hesitation issue ONLY happens I am accelerating or trying to under load and it would shudder @ around 45 MPH.
I have attached a few pics! I am assuming at this point it is a fuel injector related problem. There are no vacuum leaks or leaks anywhere on the car it sounds terrific! Please help!
I tried upload pics but it wouldn't work. I attached the picture to this link It shows the Freeze frame of when the hesitation occurred, mode 6 Test $50, $53, $54, $55, and $56. Any help is appreciated thanks!
