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Discussion Starter #1
My car has developed a tapping noise that is very pronounced when the engine is cold and under power. Not discernible when it is idling or coasting. Tends to go away when it is completely warm but still faintly present. Sounds like it is coming from the rt side of the engine although I know how tricky noises can be to trace down. Anyone else experience this on a V6? I know the Hemi's have the famous tick but this is different. Car has 10K miles on it now...
 

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2016 SXT Plus Blacktop
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Checked oil level? Oil pressure?

A Guy
 

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My car has developed a tapping noise that is very pronounced when the engine is cold and under power. Not discernible when it is idling or coasting. Tends to go away when it is completely warm but still faintly present. Sounds like it is coming from the rt side of the engine although I know how tricky noises can be to trace down. Anyone else experience this on a V6? I know the Hemi's have the famous tick but this is different. Car has 10K miles on it now...
Hi speedfrk,

Sorry to hear about this! If you decide to visit your local dealership for further diagnosis I'd be happy to offer assistance if needed. Just send us a PM with your VIN and let me know.

Andrea
Dodge Social Care Specialist
 

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Discussion Starter #4
Hi speedfrk,

Sorry to hear about this! If you decide to visit your local dealership for further diagnosis I'd be happy to offer assistance if needed. Just send us a PM with your VIN and let me know.

Andrea
Dodge Social Care Specialist
Hi Andrea, I sent you a PM a few days ago and haven't heard from the dealer or anyone, really. Is there a process to this?
 

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Try changing oil brands, sometimes this works.
Or......check this out, does it sound like this??
Good video, watch the whole thing.........

 

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Discussion Starter #6
Try changing oil brands, sometimes this works.
Or......check this out, does it sound like this??
Good video, watch the whole thing.........
Mine makes no noise at idle, just under load when cold. Almost like a cracked manifold, which it could be. I'm going to try changing the oil and using the Pennzoil 5w-20 since that is what the manual recommends. The oil has been changed once, so maybe it didn't like the oil but it didn't make any noise initially and the oil has only been in there 5K miles.
 

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Discussion Starter #8
I would check the oil level and oil pressure.
They are both fine... I check them regularly. Picked up the oil tonight and I'll change it tomorrow. I'll know pretty much right away since it really only needs to cool down for a couple hours for the tapping to be heard. Then after it is warmed up, it goes away.
 

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Discussion Starter #10 (Edited)
Might not be your problem as you have a V6 but I recently heard a pronounced tic from the EVAP solenoid on my 5.7 during cold weather.

https://vimeo.com/248094660
Yeah, it could be something like that, but it never does it at idle- at least you can't hear it at idle over the normal engine noise. I know there are all sorts of solenoids for the purge circuit. Does the frequency of the ticking change with rpm? Mine does.
 

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Yeah, it could be something like that, but it never does it at idle- at least you can't hear it at idle over the normal engine noise. I know there are all sorts of solenoids for the purge circuit. Does the frequency of the ticking change with rpm? Mine does.
Actually when I am in the car I can't hear it over the exhaust. Being a purge solenoid, I would say it does not increase with RPM. Did you check the vid from SoCal about the rocker? The noise they make changes with RPM.
 

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Discussion Starter #12
Actually when I am in the car I can hear it over the exhaust. Being a purge solenoid, I would say it does not increase with RPM. Did you check the vid from SoCal about the rocker? The noise they make changes with RPM.
The rocker will make noise all the time since it is physically worn out. Mine goes away after the car is warmed up. That's why I think it may be an exhaust leak. But it could be the VVT making noise due to the oil being cold.
 

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The rocker will make noise all the time since it is physically worn out. Mine goes away after the car is warmed up. That's why I think it may be an exhaust leak. But it could be the VVT making noise due to the oil being cold.
Still could be a rocker as heat expands metal which takes up any tolerances. As for VVT solenoid I thought it was more of a low frequency, on/off type of actuation? Don't see why they would have it pulse at frequencies that track with RPM as it uses oil pressure.
 

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Discussion Starter #15
Update, just to cover all the bases before I try getting it into the dealer during the holidays, I changed the oil with Pennzoil platinum and it seems a bit better (ticking not as loud) but just for curiosity sake, I drove it around with the screen on the oil pressure gauge and it has some strange behavior. Cold, it is about 90psi and drops slowly as it warms up. But, driving, it will go from 90 to 45 as the rpm goes up. Then when it shifts a gear and the rpm drops to 1500, it jumps back up to 90. It depends on engine speed and gear. Getting on the interstate, all warmed up, the rpm got up to 4000 and the pressure went from 45 to 90 almost instantly. Is the bypass valve controlled by a solenoid and the ECM? It never has low oil pressure, but it sure seems odd. Can someone else with the same engine try the same experiment and see how the oil pressure changes as you drive-cold vs warm, different speeds, gears... I'll see if I can get a video of the gauges as I drive tomorrow.
 

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Update, just to cover all the bases before I try getting it into the dealer during the holidays, I changed the oil with Pennzoil platinum and it seems a bit better (ticking not as loud) but just for curiosity sake, I drove it around with the screen on the oil pressure gauge and it has some strange behavior. Cold, it is about 90psi and drops slowly as it warms up. But, driving, it will go from 90 to 45 as the rpm goes up. Then when it shifts a gear and the rpm drops to 1500, it jumps back up to 90. It depends on engine speed and gear. Getting on the interstate, all warmed up, the rpm got up to 4000 and the pressure went from 45 to 90 almost instantly. Is the bypass valve controlled by a solenoid and the ECM? It never has low oil pressure, but it sure seems odd. Can someone else with the same engine try the same experiment and see how the oil pressure changes as you drive-cold vs warm, different speeds, gears... I'll see if I can get a video of the gauges as I drive tomorrow.
At cold engine start oil pressure can be quite high. And you know even though I spend a lot of time with the oil temperature display of my R/T SP visible I really haven't bothered to look at the oil pressure display except when engine is up to temperature (220F and a bit higher) and idling. Under these conditions the oil pressure is 30 to 31 psi or about 2.0 to 2.1 bar. But I know from my other car the cold oil pressure goes to "4" bar (in quotes because the gage doesn't have a full range: oil pressure at 5K and 90C should be approx. 6.5 bar which is 94psi and the gage only goes up to "5" which is approx. 73 psi.

But from watching the gage in my other car over time the oil pressure starts out at 4+ bar and as the engine (and oil, all 9 quarts of it) warms up the oil pressure drops. When the oil pressure is at 2 bar at idle I know the engine is fully warmed up.

Anyhow, while the oil pressure is 2 bar at idle when taking off oil pressure climbs and can be 3+ bar at 2K and 4 bar at 3K and 4+ bar at even higher RPMs.

Of course when I up shift and the engine RPMs drop the oil pressure drops as well. In most cars the oil pressure is a function of how fast the engine is running and how hot the oil is. But under normal conditions once warmed up the oil temperature stays in the 200F to 220F range.

But no matter how high the oil pressure reads at elevated RPMs when the engine returns to idle the oil pressure drops to 2 bar again.

So if I read your post correctly what you are seeing is normal behavior.

Now some cars (I know Porsches) the oil pump is a variable displacement pump and its output pressure and volume is controlled by an electric solenoid that is in turn controlled by the ECU (engine control unit). In this case once the oil is up to temperature idle oil pressure might be reduced to less than 31 psi (approx 2 bar) to 22 psi (approx. 2.5 bar). This reduces the parasitic load of the oil pump and saves gas and reduces emissions.

If one takes off the ECU senses this and instantly adjusts the oil pressure to be higher. But once the ECU senses acceleration is minimal and the driver just wants a steady speed the ECU can dial the pressure down from say 4 bar to 3 bar even a bit less. This reduction in oil pump pressure reduces engine load and this saves gas and cuts emmisions.

At higher engine speeds an oil pump can pump about a liter per second or 60 liters per minute. That's about 15 gallons of oil. Per minute. For every minute you are on the road (save the time you spend at a stop light with the engine idling.) That pump requires no little power to spin it that fast to pump that much oil and well, the bottom line is cutting back the oil pump's output just makes sense when it comes to improving gas mileage and reducing emissions.

When the cars with the ECU controlled oil pressure showed up the techs said it was at first a bit disconcerting to observe the normal increase in oil pressure as one took off from a stop and the oil pressure climb only to then see it drop once the ECU detected a steady throttle. I've driven a few loaner cars with this feature and I have to agree at first it is a bit disconcerting. But one gets used to it and the ECU always ensures the engine has plenty of oil pressure and supply. (In case you are wondering if the solenoid fails it fails safe and the oil pressure is simply controlled by the engine speed same as it was before.)
 

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Yeah, 90s on start, down to 31-34 when idling, etc. Ran with oil pressure display for a while before 1st oil change. I have no ticking though. A Guy
 

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try driving around a bit with the pressure gauge and see if it does odd stuff like mine- here it is warmed up, in 8th gear, 1200 rpm and 46mph with the pressure still at 73.
Got the digiial gauges displaying on the LCD then drove around until the engine was fully warmed up. I don't know for sure what oil is in the engine -- new car and I assume it is that Pennzoil 0w-40 Ultra Platinum Fully Synthetic stuff -- but around town with RPMs ranging between around 1K to 2K oil pressure maybe touched 60psi. This with the oil temperature around 220F. (Sometimes 217F, other times 222F.) Even under hard acceleration -- well not real hard because the engine is still in its break in period -- oil pressure hit maybe 62 at most.

At around 1200 RPMs if not in 8th at least in 7th gear and at less than 46mph engine oil pressure was in the 55psi to 57psi range.

I am not familiar with the engine in your car -- nor mine actually the car being only 8 days in my possession -- but 73psi at 1200 RPMs with an engine fully up to operating temperature seems a bit high. You probably should have that looked into.

Unless this is truly "normal" one of the first things I think the tech will do is perform an accurate/high confidence oil pressure measurement test to be sure what the oil pressure really is and then he can know if it is normal or too high.
 

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Discussion Starter #20
Got the digiial gauges displaying on the LCD then drove around until the engine was fully warmed up. I don't know for sure what oil is in the engine -- new car and I assume it is that Pennzoil 0w-40 Ultra Platinum Fully Synthetic stuff -- but around town with RPMs ranging between around 1K to 2K oil pressure maybe touched 60psi. This with the oil temperature around 220F. (Sometimes 217F, other times 222F.) Even under hard acceleration -- well not real hard because the engine is still in its break in period -- oil pressure hit maybe 62 at most.

At around 1200 RPMs if not in 8th at least in 7th gear and at less than 46mph engine oil pressure was in the 55psi to 57psi range.

I am not familiar with the engine in your car -- nor mine actually the car being only 8 days in my possession -- but 73psi at 1200 RPMs with an engine fully up to operating temperature seems a bit high. You probably should have that looked into.

Unless this is truly "normal" one of the first things I think the tech will do is perform an accurate/high confidence oil pressure measurement test to be sure what the oil pressure really is and then he can know if it is normal or too high.
The crazy thing is that the ticking goes away when it is warmed up and the pressure is lower. The noise does sound like the purge valve but mine only does it when it is under load and not at idle like the video. But, the SXT exhaust is very quiet so I can see how a V8 car might totally drown out the ticking.
 
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