checking coil?vibration culprit?
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New User
Joined: Jan 2003
Posts: 11
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From: down the shore
checking coil?vibration culprit?
new member here.luv these websites as i have joined tdi vw site for my car and mopar for my pickup.very helpful i have saved alot of money doing my own repairs.i have recently purchased a 97 eb expedition with 89k miles.it was a bank repo so i dont know any history.truck is very tight and runs great.its my wifes truck. i recently drove it and noticed similar problem to pwalker64.truck shifts fine but under acceleration or climbing hill i get a vibration.its usually between 60 to 65 and then it goes away above that.putting truck in neutral at that speed it disappears. checked ujoints they feel tight.replaced diff fluid to specs.havent touched trans fluid i dont know if it has ever been done.took it to my ford guy he replaced o2sens and speed sens. od light kept blinking but only last 200 mi.he says its a trans problem 3000$ new.i would like to check the coil, read one member had that problem.i have a nice blue point multimeter(luv that ebay too)but no scanner.any help would be great.thanks
Freshman User
Joined: Jan 2003
Posts: 35
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From: TN
checking coil?vibration culprit?
I get my shudder at around 45-60 mph while rpms are low in od and 3rd while trying to slightly accelerate. does it consistently. No check engine light and just had tranny flushed to trouble shoot. Any one have any Ideas
New User
Joined: Sep 2002
Posts: 9
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From: Street MD
checking coil?vibration culprit?
Had same problem develop the other day 2 weeks after having passenger side head gasket replaced (another story)! Anyway, I had been smelling antifreeze so I popped the hood and looked back at the heater hoses and saw antifreeze leaking and puddling up on my back coil pack. It felt like the truck was driving over rumble strips whenever I hit the gas in low RPMs going around 50MPH or more. Took it back to dealer and they fixed the hose clamp and replaced the coil pack. Problem gone. Never would have thought it was that if I hadn't read it on here and looked. Hope this helps.
Freshman User
Joined: Jan 2003
Posts: 35
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From: TN
checking coil?vibration culprit?
Do you have individual coil packs for each cylinder or do you have a 4 pack in front of each valve cover. I have heard a bunch of folk talking about coil packs causing this problem I am trying to narrow it down. I have the 4 pack in front of each valve cover on my 4.6 99 expedition.
Posting Guru
Joined: Sep 2000
Posts: 1,586
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From: Linwood, N.J. USA!
checking coil?vibration culprit?
A lot of people have had the heater hose clamp problem. Very common situation on the 5.4. The cheap clamp on the heater hose allows coolant to leak on the coil pack thus eventually damaging it. Jake.
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