getting concerned about the knocking issue
#1
getting concerned about the knocking issue
02 E350 van, 5.4l with 130,000 miles. I bought this van out of state from a reputable dealer and didn't notice it tapping/knocking on the way home, but since i've had it 6-8k miles or so, i've gotten real familiar with this noise. My noise is not at startup as most are, but is completely random. Sometimes at startup, sometimes not, cold/hot doesn't matter either. The only time i can ALWAYS get it to do this is to drop it in reverse and back in to my driveway (or any back), so i know you're thinking it taps under load at low rpms, but it doesn't always do it going forwards! More often than not, i get the knock at low rpms and it goes away as rpms increase with acceleration. I have read maybe cam phasers? Would this be a possible problem with an 02 5.4? Also, I sometimes pull a 6500lb travel trailer. I guess i'm just looking for some piece of mind on whether this thing is going to blow up one day and if so, is it more than likely to do it under load? I'm getting a little paranoid towing with it because i know it's working pretty hard pulling that trailer.
The only other info i can give is that it doesn't use, leak, or burn oil. I'm running mobil1 5w-20 with the Ford oil filter.
I have NOT had a Ford mechanic look at it yet but i have a couple of good ones locally. I'm just trying to narrow down what the problem might be and whether not i should address it right away.
thx
The only other info i can give is that it doesn't use, leak, or burn oil. I'm running mobil1 5w-20 with the Ford oil filter.
I have NOT had a Ford mechanic look at it yet but i have a couple of good ones locally. I'm just trying to narrow down what the problem might be and whether not i should address it right away.
thx
#5
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Scotty I've had the cracked flex plate on two different vehicles and that noise can scare one half to death------the dollar signs flying out the window. I did a quick search on YouTube for cracked flex plate and found quite a few----maybe check it out to see if any of them are similar to yours?
Its not a tough job replacing one but it does involve R&I'ing the trans since it is the auto trans version of a flywheel as J.Grif said.
Its not a tough job replacing one but it does involve R&I'ing the trans since it is the auto trans version of a flywheel as J.Grif said.
#7
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#8
well i looked at some Youtube videos on the flex plate problem, i don't think this is it. My problem is much more subtle, a tick inside the block somewhere i think. I haven't tried a stethoscope or anything because mine hardly ever does it at idle, usually under light load or acceleration, and it goes away as rpms increase. I'm gonna take it to a good mechanic soon i guess, i don't think i could video or record it, it would be impossible to hear i think.
Anyway, it's not my daily driver so it hasn't become urgent yet.
Anyway, it's not my daily driver so it hasn't become urgent yet.
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