2002 4.2 rough idle
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2002 4.2 rough idle
well guys when my truck is cold and after the initial start up couple of min later when i let it idle it sounds rough but its not missing? i have new plugs and a k&n filter and just replaced the fuel filter... also after a day or 2 of sitting its a little hard to start and does miss a couple of times before evening out.
anyone got any ideas on what to replace to help this little prob? any help would be apreciated thanks
anyone got any ideas on what to replace to help this little prob? any help would be apreciated thanks
Postmaster
Joined: Aug 2001
Posts: 4,532
Likes: 5
From: Trussville, Alabama
How many miles on your truck?
Have you checked the coolant level to be certain you are not losing any coolant via a leaking lower intake manifold gasket?
You mentioned new plugs. What brand?
Did it miss prior to installing new plugs?
Did you install new plug wires?
If you are not losing any coolant, I'd suspect plug wires if you don't have new ones.
You describe a common complaint from folks who need new plugs and wires.
Have you checked the coolant level to be certain you are not losing any coolant via a leaking lower intake manifold gasket?
You mentioned new plugs. What brand?
Did it miss prior to installing new plugs?
Did you install new plug wires?
If you are not losing any coolant, I'd suspect plug wires if you don't have new ones.
You describe a common complaint from folks who need new plugs and wires.
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Freshman User
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i got about 77,000 on it and i suspected new plug wires, i was just woundering if it was something els and no i dont have any coolent leakage? i thought that they resolved that problom by 2000-2001? o yeah and the plugs were motorcraft i bealive thanks for the help
New User
Joined: Oct 2002
Posts: 21
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From: Glendive MT
yeah
I had a rebuilt that was a Ford. Had 73k on the truck and it seized. Got another 100k after that Ford rebuilt and motor seized again. I know I put it through hell and that is why it went through two engines but I did expect more from something that only towed a little. Mainly trail driving.
What do you do with your truck? If it involves towing just cut your losses and get something bigger!
Don't get me wrong I love my dead truck but you have to assess what you are doing. The 4.2 is good for a "light duty" truck but that is all! I don't want to hear anything else.
If you have questions pm me I'd be happy to help.
I went bigger with tires and that was all. If you need a truck for something more than civillian duties get a V8 or F-250+ that is the bottom line
What do you do with your truck? If it involves towing just cut your losses and get something bigger!
Don't get me wrong I love my dead truck but you have to assess what you are doing. The 4.2 is good for a "light duty" truck but that is all! I don't want to hear anything else.
If you have questions pm me I'd be happy to help.
I went bigger with tires and that was all. If you need a truck for something more than civillian duties get a V8 or F-250+ that is the bottom line
Last edited by wi_bear; Nov 7, 2006 at 01:30 AM.
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yeah thats true bigger is better but the only thing my truck tows is MAYBE a bass boat every once in a wile other than that theres nothin in it....i got it for the gas mileage trying to be smart but i got to talking to a ford mechanic and he told me the 4.6 gets the same but o well im happy with it....for now
Postmaster
Joined: Aug 2001
Posts: 4,532
Likes: 5
From: Trussville, Alabama
Don't get talked into disliking your truck.
If it is reliable and works for you and your needs, it's a good truck.
242,000 miles between 2 F150s w/ 4.2 and I'm perfectly happy.
Regarding plug wires: I use Motorcraft.
Too many reports of problems with others.
If it is reliable and works for you and your needs, it's a good truck.
242,000 miles between 2 F150s w/ 4.2 and I'm perfectly happy.
Regarding plug wires: I use Motorcraft.
Too many reports of problems with others.
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