4.2 dead skip uner load/acceleration
Thread Starter
|
Posting Guru
Joined: Aug 2005
Posts: 1,036
Likes: 1
From: NE Ga
4.2 dead skip uner load/acceleration
2001 F150 w/ 4.2 and has a dead skip when climbing a hill and about 1/4+ throttle. It also skips under acceleration from a stop. I was thinking ignition control module but I don't see one and from what i can tell everything is contained in the coil pack itself. I've flushed the injectors/intake and replaced plugs/wires. Compression test checks out to within 10% of each other. I've gotten misfire codes on #1, 3, 4 cylinders. I also thought water in the fuel but it has been doing this for many months now. Evap system checks out. No vac leaks. Good electrical connections. I have not put a gauge on the fuel lines but it is such a dead miss it's almost instant- too fast for fuel loss it seems to me. Idles smooth as a button. Sound like a coil pack? I at least thought that #1 and #4 cylinders are on the same row of the coil pack (not sure how those things work) but thought if one was on its way out, it might send the other one w/ it. Possibility? Worth $75 for a new one? I'm thinking of gettin one from the yard first maybe.
Thread Starter
|
Posting Guru
Joined: Aug 2005
Posts: 1,036
Likes: 1
From: NE Ga
concluded that the motor is eating coolant. Will pull the plugs the next oil change to verify and watch coolant levels. Such a sorry motor. This is the 3rd one I've seen do this. One 3.8 and now two 4.2's have done this to me. Wish is was easy to swap a 4.6 into it b/c i've got one of those on the shelf from a PI. Thanks for reading anyways.
Postmaster
Joined: Aug 2001
Posts: 4,532
Likes: 5
From: Trussville, Alabama
Curious.....
How many miles on the '01?
I had a 2000 which had a lower intake manifold gasket leak at about 155,000 miles. Got it fixed and didn't have any more problems. (sold it at about 173,000 miles)
My current ('05) has 161,000 miles, the coolant level has never dropped and the motor continues to run fine - no problem ever with the engine or transmission.
How many miles on the '01?
I had a 2000 which had a lower intake manifold gasket leak at about 155,000 miles. Got it fixed and didn't have any more problems. (sold it at about 173,000 miles)
My current ('05) has 161,000 miles, the coolant level has never dropped and the motor continues to run fine - no problem ever with the engine or transmission.
Thread
Thread Starter
Forum
Replies
Last Post
jrobie79
Explorer, Sport Trac, Mountaineer & Aviator
12
Feb 1, 2014 12:42 AM
