Vibration & Power Loss During Acceleration
#1
12-20-2006, 11:41 AM
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Vibration & Power Loss During Acceleration
My 98 Expy 5.4L vibrates the whole vehicle and has little power when accelerating. When in park I feel a slight vibration when I apply a little gas but then revs up normally. My wife told me about the problem yesterday. This came on suddenly with no previous symptoms. When I checked it last night I noticed a slightly rough idle and found a small leak at the PCV boot. I repaired that and cleared the CEL light. When I took it for a drive I then realized the problem was much worse but the CEL light has not come back yet. Will a code come up with out the CEL light on? Do you think I might have lost a COP? Thanks for your advise in advance.
#2
12-20-2006, 06:29 PM
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I will also add that it shifts normally but, seems to vibrate more violently the harder I accelerate. From looking through previous posts I am thinking it may be a COP. I think I will try to get it scanned for codes. Hopefully the CEL returns by the time I get there and get help point me in the right direction.
#3
12-20-2006, 07:13 PM
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12-20-2006, 07:20 PM
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If I had insufficient fuel pressure would I still be able to rev while in park? It does have a rough idle also. I drove it through a car wash for the first time Sunday and I am wondering if moisture got to one of the COP's. I don't think I have the tools to check the fuel pressure so I would have to take it in.
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12-27-2006, 03:10 PM
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01-01-2007, 02:44 PM
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01-02-2007, 10:22 AM
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01-02-2007, 07:31 PM
