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Strange noise upon start up?
- Thread starter BDR SRT-10
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jrgnd
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Prof said:
Had the same problem with the same filter...Using K&N now....
BDR SRT-10
Full Access Member
Soooo, should I lean more towards the oil filter making the new noise and switch back to the original Mopar one, or is it quite possible the belt and/or loose pulley bolts??? Like I said, I've never heard this noise until now, after I've used the new 'Viper' oil filter... And the only reason I switched was b/c of the higher flow capabilities it's said to have over the original Mopar...
Also, what do you guys mean when you say back flow valve noise???
Also, what do you guys mean when you say back flow valve noise???
BDR SRT-10
Full Access Member
:questionmark:
For the cost of an oil filter i would try that first.BDR SRT-10 said:
It is the oil filter that makes the startup noise. It is resonance caused by oil system pressurizing. When the truck sits for a long time without being run, the oil slowly drains out of the system back into the pan (even with a anti-drain back valve in the filter). When you start the truck oil is being forced back through the system through the holes in the filter causing the noise. If the engine has run recently, it won't make the noise since the oil has not drained out of the system yet (or very little).
I have compared the Mopar filter to others and the main difference is the number of flow holes around the outside of the filter face. The Mopar one has more of them. This would allow more oil flow thus eliminating the resonance. This doesn't make it a better filter, just different.
It is pretty common knowledge in Mopar circles that the filters are rebranded by whomever Chrysler chooses to contract with to make them. They may not always come from the same vendor even though they will have the same part number. Could be the reason why some get the noise with the Mopar filter and some don't. It is annoying, but will not hurt anything.
-Muzzy
I have compared the Mopar filter to others and the main difference is the number of flow holes around the outside of the filter face. The Mopar one has more of them. This would allow more oil flow thus eliminating the resonance. This doesn't make it a better filter, just different.
It is pretty common knowledge in Mopar circles that the filters are rebranded by whomever Chrysler chooses to contract with to make them. They may not always come from the same vendor even though they will have the same part number. Could be the reason why some get the noise with the Mopar filter and some don't. It is annoying, but will not hurt anything.
-Muzzy
Muzzy said:
Thanks for clearing that up Muzzy.I just can not make myself listen to the noise.:dontknow: Went back to the regular Mopar filter.
BDR SRT-10
Full Access Member
Ok I understand that and follow what you're saying and thanks for the great clarification Muzzy, but does that mean the Viper specific filter really isn't better than the regular Mopar one?? That noise is rather annoying upon start-up 
Or does it indeed flow and filter better, just with this start-up noise as a side effect??
Or does it indeed flow and filter better, just with this start-up noise as a side effect??
badmood
Full Access Member
I used a mobile one filter and it made the same noise so I switch to the mopar filter and it fix the noise.
Alberta-SRT
Full Access Member
Mopar filters still have the noise for me, Both the regular one and the Viper one. Next I will try the one Inludemeout mentioned. If that doesn't work a K&N will be my next option.
If you still have the noise with the regular filter,Check the belt and pulley bolt.Alberta-SRT said:
Change the oil go with a factory filter, sound , no sound.
sound
upon start up take some WD and spray on the belt , see if the noise dissapears sound no sound
sound
buy a bottle of lucas oil treatment and pour in sound no sound
sound
take to dealer have them chek the crank bolt. sound no sound
sound
sell the phugger
sound
upon start up take some WD and spray on the belt , see if the noise dissapears sound no sound
sound
buy a bottle of lucas oil treatment and pour in sound no sound
sound
take to dealer have them chek the crank bolt. sound no sound
sound
sell the phugger
BDR SRT-10
Full Access Member
Must be the dang new filter then... :banghead:
Alberta-SRT
Full Access Member
I have checked it, everything is fine. the noise is not the squeal of a belt, it is a resonating sound that does not change with engine rpm.JRSVIPR said:
KB
Op. cit. Post 22 above.
Alberta-SRT
Full Access Member
I have some wav files with the sound, how do I post them?
put them in photobucket.com (free) and cut and paste the lowest address and insert it here.
BDR SRT-10
Full Access Member
/\/\/\/\ By stating billet filter, is that a.k.a. new Viper filter?? Back flow valve? Is that in the new filter too??
I trust your advice, just wanna make sure I understand??
I trust your advice, just wanna make sure I understand??
Alberta-SRT
Full Access Member
Prof said:
Thanks, I tried, but I am in a hotel with a painfully slow connection.
I couldn't even get on that webpage. I'll try tomorrow.
BDR SRT-10 said:
We tried to use an aftermarket billet filter that has a nice powder coat finish and a replaceable filter element and it caused the fluttering noise on two different trucks...Gary felt it was the back flow valve...but when we disabled the valve the sound persisted.
We went back to the oem mopar filter and the noise was gone immediately.
I just purchased a half dozen of the new viper filters but have not tried them yet...I may put one on tomorrow just to see if the sound returns...
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