Tiffin RV 35QBA - Unusual High Pitch Noise from Engine Compartment/Dash - Ford Truck Enthusiasts Forums
 

Go Back   Ford Truck Enthusiasts Forums > Performance, Engines & Troubleshooting > Modular V10 (6.8l)
Log In 


Modular V10 (6.8l) SPONSORED BY:

Tiffin RV 35QBA - Unusual High Pitch Noise from Engine Compartment/Dash

Reply
 
 
 
LinkBack Thread Tools Search this Thread
  #1  
Old 08-17-2013, 12:04 PM
rvjoe rvjoe is offline
New User
 
Join Date: Aug 2013
Posts: 1
rvjoe is starting off with a positive reputation.
Tiffin RV 35QBA - Unusual High Pitch Noise from Engine Compartment/Dash

This is a copy of a post I placed on tiffinrvnetwork.com. The chassis for the 35QBA is a 24,000LB F550. Posting here to see if any Ford enthusiasts can help identify the noise we are experiencing.

We bought a 2013 35QBA in January of this year. During the first three months of owning the rig we noticed a high pitched noise coming from the engine compartment/dashboard area. This only seemed to happen when we had the 16' utility trailer with our dirt toys in tow. We took it to our local Ford dealer, told them about the noise, and left it for a week with them. They reported back that they were unable to reproduce the noise and let them know if it happens again.

Since then we have had that same noise towing up hill......going down hill when the transmission down shifts, and sometimes just while driving mostly flat roads with some rolling hills (think Oklahoma and Texas flat). It also appears to happen more frequently when it is warmer outside ( above 88-90 or so). We have been on our summer vacation in the RV for the past 7 weeks and have been dealing with the noise the entire trip. We took it to a Ford dealer in Branson MO because we had a time share to stay at for that week. We took the tech for a ride with the trailer attached and he was able to hear the noise....unfortunately he was not able to find the issue nor reproduce when the trailer was not attached.

Since we have tried twice at Ford I thought I would post this question along with a link to a YouTube video of the noise as it happens. The noise in this video is the high end of the spectrum...there is a quieter version of the noise that also occurs on a regular basis but is very hard to hear over the engine noise. To see / hear the video click below.


During this video you can see that the RPMS are around 4K and we are doing ~70. This same noise can happen at 2.5K RPMS and 50 MPH....extremely variable and frustrating.

We have weighed and the trailer with toys comes in around 3500-3700 pounds depending on the combination of toys on the trailer and the real axle runs right at maximum load. Typically we usually carry about 1/3 tank fresh with us at all times.

Any insights would be appreciated as this is becoming very annoying to deal with on a daily basis while we are on the road.

Thanks,
Joe
Reply With Quote
  #2  
Old 08-19-2013, 10:11 AM
Krewat's Avatar
Krewat Krewat is online now
Super Moderator
 
Join Date: Jul 2002
Location: Long Island USA
Posts: 36,282
Krewat has a superb reputationKrewat has a superb reputationKrewat has a superb reputationKrewat has a superb reputationKrewat has a superb reputationKrewat has a superb reputationKrewat has a superb reputationKrewat has a superb reputationKrewat has a superb reputationKrewat has a superb reputationKrewat has a superb reputation
Wow, that's a new one...

First, I'd go back to the (or any) dealer with that video and let them know exactly what it sounds like.

Could be intake noise, could be just about anything. It's more of a whistle than a squeal, yes?
__________________
- art k. - Moderator for the Superduty, V10, 6.2L and FE forums
'16 Taurus SHO 3.5L Ecoboost w/Perf Pkg
'01 F250SD SC SB XLT V10 4x4 Volant CAI Hedman headers 5-star custom tunes on SCT X3
'97 Cougar XR7 30th Anniv Edition 4.6L
'74 F250 Highboy FE390 deceased!
I've been wrong before, I'll be wrong again. Just wait and see. ®
Reply With Quote
  #3  
Old 08-29-2014, 11:43 PM
griffin1808 griffin1808 is offline
New User
 
Join Date: Aug 2014
Posts: 1
griffin1808 is starting off with a positive reputation.
I have the same problem

Thank you for posting this, we have the same problem our RV is in for repair and they have not heard of the problem. We're you able to figure out what the problem is, and did they fix it? Your reply will be greatly appreciated
Reply With Quote
  #4  
Old 02-09-2015, 12:43 PM
turbodan1 turbodan1 is offline
New User
 
Join Date: Feb 2015
Posts: 1
turbodan1 is starting off with a positive reputation.
I also have a 2013 tiffin motorhome and its at the dealer for the same problem. They have no idea what it is. I will post if they can find anything.
Reply With Quote
  #5  
Old 02-18-2015, 01:38 PM
KellyfromVA's Avatar
KellyfromVA KellyfromVA is offline
Senior User
 
Join Date: Aug 2014
Posts: 196
KellyfromVA is gaining momentum as a positive member of FTE.
My guess is a vacuum leak, either from the intake manifold or a hose. That being said, vacuum would be less under heavy acceleration, so not sure why that would pop up then. What about spark-arching to ground from a bad coil pack(s)?
Reply With Quote
  #6  
Old 07-16-2016, 08:35 PM
Jillaginn Jillaginn is offline
New User
 
Join Date: Jul 2016
Posts: 2
Jillaginn is starting off with a positive reputation.
Same noise - 2015 Tiffin Open Road

Did you ever figure out what this noise was? We have the same problem now. Thanks!

This is a copy of a post I placed on tiffinrvnetwork.com. The chassis for the 35QBA is a 24,000LB F550. Posting here to see if any Ford enthusiasts can help identify the noise we are experiencing.

We bought a 2013 35QBA in January of this year. During the first three months of owning the rig we noticed a high pitched noise coming from the engine compartment/dashboard area. This only seemed to happen when we had the 16' utility trailer with our dirt toys in tow. We took it to our local Ford dealer, told them about the noise, and left it for a week with them. They reported back that they were unable to reproduce the noise and let them know if it happens again.

Since then we have had that same noise towing up hill......going down hill when the transmission down shifts, and sometimes just while driving mostly flat roads with some rolling hills (think Oklahoma and Texas flat). It also appears to happen more frequently when it is warmer outside ( above 88-90 or so). We have been on our summer vacation in the RV for the past 7 weeks and have been dealing with the noise the entire trip. We took it to a Ford dealer in Branson MO because we had a time share to stay at for that week. We took the tech for a ride with the trailer attached and he was able to hear the noise....unfortunately he was not able to find the issue nor reproduce when the trailer was not attached.

Since we have tried twice at Ford I thought I would post this question along with a link to a YouTube video of the noise as it happens. The noise in this video is the high end of the spectrum...there is a quieter version of the noise that also occurs on a regular basis but is very hard to hear over the engine noise. To see / hear the video click below.


During this video you can see that the RPMS are around 4K and we are doing ~70. This same noise can happen at 2.5K RPMS and 50 MPH....extremely variable and frustrating.

We have weighed and the trailer with toys comes in around 3500-3700 pounds depending on the combination of toys on the trailer and the real axle runs right at maximum load. Typically we usually carry about 1/3 tank fresh with us at all times.

Any insights would be appreciated as this is becoming very annoying to deal with on a daily basis while we are on the road.

Thanks,
Joe[/QUOTE]
Reply With Quote
  #7  
Old 07-17-2016, 10:25 AM
Krewat's Avatar
Krewat Krewat is online now
Super Moderator
 
Join Date: Jul 2002
Location: Long Island USA
Posts: 36,282
Krewat has a superb reputationKrewat has a superb reputationKrewat has a superb reputationKrewat has a superb reputationKrewat has a superb reputationKrewat has a superb reputationKrewat has a superb reputationKrewat has a superb reputationKrewat has a superb reputationKrewat has a superb reputationKrewat has a superb reputation
Wow, that's weird. Have you tried turning off the AC/Climate-control stuff when it does this?

It almost sounds like a vacuum actuator leaking. Do you have climate-control?
__________________
- art k. - Moderator for the Superduty, V10, 6.2L and FE forums
'16 Taurus SHO 3.5L Ecoboost w/Perf Pkg
'01 F250SD SC SB XLT V10 4x4 Volant CAI Hedman headers 5-star custom tunes on SCT X3
'97 Cougar XR7 30th Anniv Edition 4.6L
'74 F250 Highboy FE390 deceased!
I've been wrong before, I'll be wrong again. Just wait and see. ®
Reply With Quote
  #8  
Old 07-19-2016, 08:51 AM
super 6.8 super 6.8 is offline
Elder User
 
Join Date: Oct 2004
Location: Wichita
Posts: 601
super 6.8 is gaining momentum as a positive member of FTE.
Is that a bearing squeal in the accessory drive?
__________________
2007 F250 CC 4wd v10 4.30 5 sp auto with moonroof
2007 Mountaineer Premier 4.6 6 sp auto
2015 Taurus Limited 3.5 6sp auto
2002 Ranger 2WD 4.0 SOHC auto
Reply With Quote
  #9  
Old 07-19-2016, 10:13 AM
Krewat's Avatar
Krewat Krewat is online now
Super Moderator
 
Join Date: Jul 2002
Location: Long Island USA
Posts: 36,282
Krewat has a superb reputationKrewat has a superb reputationKrewat has a superb reputationKrewat has a superb reputationKrewat has a superb reputationKrewat has a superb reputationKrewat has a superb reputationKrewat has a superb reputationKrewat has a superb reputationKrewat has a superb reputationKrewat has a superb reputation
Quote:
Originally Posted by super 6.8 View Post
Is that a bearing squeal in the accessory drive?
Hmm... could be... AC compressor clutch bearing? Which brings me back to the climate control. Does turning on and off the AC change the squeel?
__________________
- art k. - Moderator for the Superduty, V10, 6.2L and FE forums
'16 Taurus SHO 3.5L Ecoboost w/Perf Pkg
'01 F250SD SC SB XLT V10 4x4 Volant CAI Hedman headers 5-star custom tunes on SCT X3
'97 Cougar XR7 30th Anniv Edition 4.6L
'74 F250 Highboy FE390 deceased!
I've been wrong before, I'll be wrong again. Just wait and see. ®
Reply With Quote
  #10  
Old 07-19-2016, 11:39 AM
Jillaginn Jillaginn is offline
New User
 
Join Date: Jul 2016
Posts: 2
Jillaginn is starting off with a positive reputation.
On the road again again today

I'm on the road again today and am going to try to replicate the noise with the A/C off.
Reply With Quote
 
 
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
2009 F250 Noise Behind Dash mjmck Super Duty & Heavy Duty 2 01-22-2016 10:27 AM
210 Ford F250 High Pitche Ringing...Also dash knocking noise moreammo 6.4L Power Stroke Diesel 6 04-27-2015 08:33 AM
VCT? Cam? Timing? (w/ video) Laura.311 2004 - 2008 F150 2 03-28-2015 10:44 AM
Bet you've never heard this noise before.... caedo 1999 - 2003 7.3L Power Stroke Diesel 37 06-04-2014 03:06 PM


Go Back   Ford Truck Enthusiasts Forums > Performance, Engines & Troubleshooting > Modular V10 (6.8l)

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Forum Jump



All times are GMT -5. The time now is 08:54 AM.

 

Advertising - Terms of Use - Privacy Statement - Terms of Service - Jobs
This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. Ford® is a registered trademark of the Ford Motor Company.

vbulletin Admin Backup