rough idle 04 f150 heritage
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Joined: Oct 2003
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From: Austin - The oasis of TX
rough idle 04 f150 heritage
2004 F150xlt Heritage S/C Longbed, 4.6L, 2400 miles. This is really just a 2003, re-badged.
In neutral, a slight vibration is felt through the seats.
Once engine is fully warm and idle settles to 650,
vibration significantly shakes seats while stopped with
transmission engaged in reverse or drive. Idle seems to
hold steady at 650. Vibration is slight while in neutral or park,
idle steady at 700. The truck has always had a high pitch whine sound,
which I believe is the power steering.
While driving, truck operates normally and very smoothly.
First service visit, computer check and test drive concluded 'No Problem Found'.
Second visit, service manager acknowledged the problem
existed and performed a 'balance' on the engine, transmission,
and exhaust mounts. Driving home, vibration again and now seems to be a little worse.
Going back to service next week, any suggestions?
In neutral, a slight vibration is felt through the seats.
Once engine is fully warm and idle settles to 650,
vibration significantly shakes seats while stopped with
transmission engaged in reverse or drive. Idle seems to
hold steady at 650. Vibration is slight while in neutral or park,
idle steady at 700. The truck has always had a high pitch whine sound,
which I believe is the power steering.
While driving, truck operates normally and very smoothly.
First service visit, computer check and test drive concluded 'No Problem Found'.
Second visit, service manager acknowledged the problem
existed and performed a 'balance' on the engine, transmission,
and exhaust mounts. Driving home, vibration again and now seems to be a little worse.
Going back to service next week, any suggestions?
Last edited by zigzag929; Apr 16, 2004 at 10:36 PM.
Thread Starter
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Member
Joined: Oct 2003
Posts: 28
Likes: 0
From: Austin - The oasis of TX
More info
And look what I found on the Internet:
Then a helpful guy at flatratetech.com said:
(that site has Ford service manuals on DVD)
I guess the keyword in the TSB is OPTIONAL
I will investigate this with the service manager.
It will be funny if this is the real problem and this becomes another tale about How the Internet Fixed My Truck!
TSB 03144
2003 Ford F150
ENGINE MISFIRE OR ROUGH RUNNING CONDITION WITH COIL ON PLUG (COP) IGNITION SYSTEMS MAY BE MORE ACCURATELY DIAGNOSED USING THE OPTIONAL WORLDWIDE DIAGNOSTIC SYSTEM (WDS) COIL ON PLUG (COP) KIT. 2003 SUPER DUTY F SERIES INCLUDED. *TT.
2003 Ford F150
ENGINE MISFIRE OR ROUGH RUNNING CONDITION WITH COIL ON PLUG (COP) IGNITION SYSTEMS MAY BE MORE ACCURATELY DIAGNOSED USING THE OPTIONAL WORLDWIDE DIAGNOSTIC SYSTEM (WDS) COIL ON PLUG (COP) KIT. 2003 SUPER DUTY F SERIES INCLUDED. *TT.
(that site has Ford service manuals on DVD)
the easiest way to at least isolate which cylinder may have a problem is to use the WDS, check the mode 6 data and find out which cylinder(s) are having misfire problems. from there it needs to be determined what is causing it either fuel or spark. Which engine do you have? the 5.4 liters have had a problem with the coils.
I will investigate this with the service manager.
It will be funny if this is the real problem and this becomes another tale about How the Internet Fixed My Truck!