Recent Topics
Costco Car Buying Program
by dkryan. 09/24/18 05:39 PM
Glass Scrub?
by buck91. 09/24/18 05:03 PM
Loosing coolant from somewhere
by NICAT. 09/24/18 03:47 PM
2010 or so Ford Fusion Sport thoughts?
by ZZman. 09/24/18 03:35 PM
My boss killed his jeep.
by Chris142. 09/24/18 02:40 PM
Moly question about walmart oils
by jayjr1105. 09/24/18 02:33 PM
Questions About 9011 Bulbs
by knerml. 09/24/18 02:23 PM
Lubricant Additives - A Practical Guide
by wemay. 09/24/18 01:39 PM
Fram Ultra--Any Real Competition?
by IndyFan. 09/24/18 12:59 PM
Used generator price.
by Eddie. 09/24/18 11:55 AM
More energy concerns about Bitcoin
by OVERKILL. 09/24/18 10:01 AM
Soot loading from DI engines - Size of particles
by StevieC. 09/24/18 09:58 AM
Newest Members
albert001, LG_Electronics, TCam, OzFrog, Kursk
66062 Registered Users
Who's Online Now
92 registered members (Ag76, Armkb, anndel, ABomb369, 14Accent, -SyN-, 14 invisible), 1,801 guests, and 32 spiders.
Key: Admin, Global Mod, Mod
Forum Statistics
Forums67
Topics290,954
Posts4,853,165
Members66,062
Most Online3,590
Jan 24th, 2017
Donate to BITOG
Previous Thread
Next Thread
Print Thread
Hop To
Serp Belt Slipping/Chirping #4806801
07/06/18 01:03 PM
07/06/18 01:03 PM
Joined: Jun 2006
Posts: 5,176
KC
badtlc Offline OP
badtlc  Offline OP
Joined: Jun 2006
Posts: 5,176
KC
My 2007 2.3L Escape has an issue where when it is hot outside (90F+), AC is running, car is stopped and transmission is in DRIVE, the belt will start chirping. Put it in neutral OR give it some gas and the chirping stops.

I replaced the belt, idler pulley and tensioner a couple years ago and the slipping had stopped but now it is back. Belt and everything still look new. So, a few things:

1) Is this likely the result of the belt getting soft and stretching a bit?
2) Is there something I could clean or maybe spray on the belt that could help?
3) Could this be harming the compressor?
4) Any suggestions on how to permanently fix this other than throw a new belt on every couple of years?

Thanks.


2007 Ford Escape XLS 2.3L ATX, M1 AFE 0W20, Fram TG, 165k+
2015 Chrysler T&C, 75k+, M1 AFE 0W20, Fram TG OF
Re: Serp Belt Slipping/Chirping [Re: badtlc] #4806811
07/06/18 01:17 PM
07/06/18 01:17 PM
Joined: May 2013
Posts: 680
Florida
SilverSnake Offline
SilverSnake  Offline
Joined: May 2013
Posts: 680
Florida


2016 Charger, 6.4L-485 HP (PUP 0W-40)
2017 BMW 330i, 2L-248 HP (BMW 0W-20)
2018 Jeep GC, 5.7L-360 HP (PP 5W-20)
2008 20KW Generac (Amsoil 10W-30/30)
Re: Serp Belt Slipping/Chirping [Re: badtlc] #4806821
07/06/18 01:30 PM
07/06/18 01:30 PM
Joined: Nov 2004
Posts: 1,803
SD
zrxkawboy Offline
zrxkawboy  Offline
Joined: Nov 2004
Posts: 1,803
SD
NO belt dressing on a serpentine belt! !

What brand of belt did you install? A new Gates gave me the same issue on our van. A Gatorback (now Continental) solved it.


"Think of all the Ford owners who will someday want an automobile." John Dodge

Re: Serp Belt Slipping/Chirping [Re: zrxkawboy] #4806834
07/06/18 01:48 PM
07/06/18 01:48 PM
Joined: Jun 2006
Posts: 5,176
KC
badtlc Offline OP
badtlc  Offline OP
Joined: Jun 2006
Posts: 5,176
KC
Originally Posted By: zrxkawboy
NO belt dressing on a serpentine belt! !

What brand of belt did you install? A new Gates gave me the same issue on our van. A Gatorback (now Continental) solved it.


The current belt is a gatorback and if I remember right was the first one to not have the issue when it was new. All others (OEM & gates) slipped from day 1.


2007 Ford Escape XLS 2.3L ATX, M1 AFE 0W20, Fram TG, 165k+
2015 Chrysler T&C, 75k+, M1 AFE 0W20, Fram TG OF
Re: Serp Belt Slipping/Chirping [Re: badtlc] #4806839
07/06/18 01:51 PM
07/06/18 01:51 PM
Joined: Jun 2003
Posts: 17,368
Deplorable in apple valley, ca
Chris142 Offline
Chris142  Offline
Joined: Jun 2003
Posts: 17,368
Deplorable in apple valley, ca
Dayco makes a quiet belt too. Look in the pullys for built up rubber,rocks etc.


02 Wrangler durablend 10w40
87 F250 traveler 15w40
04 Tahoe super-s 10w30
Z400 castrol T 10w40
Can am maveric edge 5w40
57 case tractor 15w40
Re: Serp Belt Slipping/Chirping [Re: badtlc] #4806841
07/06/18 01:54 PM
07/06/18 01:54 PM
Joined: Aug 2006
Posts: 9,808
Central Washington
Colt45ws Offline
Colt45ws  Offline
Joined: Aug 2006
Posts: 9,808
Central Washington
Are you SURE its the belt slipping? It seems rather unlikely at idle. I would be looking closer at a bearing in the accessory drive somewhere.


-Colton
2002 Ford Crown Vic PI 207k, Ex-Kootenai County, ID Unit #42
Down for engine swap
2003 Ford Crown Vic PI 75k
Castrol EDGE HM 5W30, Fram XG2
Re: Serp Belt Slipping/Chirping [Re: badtlc] #4806842
07/06/18 01:55 PM
07/06/18 01:55 PM
Joined: Sep 2008
Posts: 1,965
Pennsylvania
Boomer Offline
Boomer  Offline
Joined: Sep 2008
Posts: 1,965
Pennsylvania
Bewst solution to this is something I have used with great success on many vehicles over the years. Take a few dabs of SILICONE lubricant grease (dielectric grease will be fine) and gently spread it on sections of the ribbed side of the belt. About three pea sized portions spread around will do just fine. When the engine runs and warms it will distribute evenly on the ribs. This will stop the squeak, NOT cause belt slippage and will not affect longevity of the belt. DO NOT USE petroleum grease or "belt dressing".


2013 VW Passat TDI SE, 59,300 miles Castrol Professional VW507 5W-30
2017 VW Golf All Track 17,470 miles Castrol Professional VW505 5W-40
Re: Serp Belt Slipping/Chirping [Re: badtlc] #4806872
07/06/18 02:43 PM
07/06/18 02:43 PM
Joined: Jun 2015
Posts: 662
Arizona
Kawiguy454 Offline
Kawiguy454  Offline
Joined: Jun 2015
Posts: 662
Arizona
+1 something is causing drag on the belt. A worn bearing possibly on the idler pulley, alternator or air pump. Something is resisting turning enough to cause belt slip.

Next time you remove the belt inspect for contamination from oil also and clean the pulley's off if needed.

Re: Serp Belt Slipping/Chirping [Re: badtlc] #4806896
07/06/18 03:19 PM
07/06/18 03:19 PM
Joined: Sep 2007
Posts: 968
TX, USA
JMJNet Offline
JMJNet  Offline
Joined: Sep 2007
Posts: 968
TX, USA
Compressor may cause the chirping like an almost seized clutch or the bearing in the clutch is starting to go bad?
Also check other parts attached to the belt like Alternator, etc.


  • 2017 Toyota Sienna
  • 1995 GMC Suburban 6.5L Turbo Diesel


Re: Serp Belt Slipping/Chirping [Re: badtlc] #4806972
07/06/18 05:01 PM
07/06/18 05:01 PM
Joined: Oct 2010
Posts: 1,753
PA
123Saab Offline
123Saab  Offline
Joined: Oct 2010
Posts: 1,753
PA
I never put anything on noisy belts.

http://www.daycoproducts.com/why-belt-dressing-is-not-a-solution-to-quiet-a-noisy-belt

Like others have stated, it's most likely a clutch issue in either the AC or Alternator.

Put a long socket extension against the shell of the compressor and alt and listen.


Anything can happen
The tallest towers be overturned
Those in high places be daunted
Those overlooked regarded
- Seamus Heaney
Re: Serp Belt Slipping/Chirping [Re: Chris142] #4806991
07/06/18 05:22 PM
07/06/18 05:22 PM
Joined: Nov 2006
Posts: 19,941
MA, Mittelfranken.de
Trav Offline
Trav  Offline
Joined: Nov 2006
Posts: 19,941
MA, Mittelfranken.de
Originally Posted By: Chris142
Dayco makes a quiet belt too. Look in the pullys for built up rubber,rocks etc.


The Dayco "W" belt is a very good quiet belt, much better IMHO than the Gatorback which tend to whine.

OP Check belt alignment first with the old belt in place then remove the belt, check the pulleys for smooth operation and play.
Any misalignment must be corrected with shims, flat washers, pully back spacing, etc.

Clean the pulley with with grey Scotchbrite pad and a little dawn liquid in warm water, rinse and blow dry then brake clean spray. Replace the tensioner if old or original, loss of spring pressure is the major contributor to noise and wear.


ASE L1, Master. Deutsch Meisterbrief.
Re: Serp Belt Slipping/Chirping [Re: Colt45ws] #4808852
07/09/18 07:38 AM
07/09/18 07:38 AM
Joined: Jun 2006
Posts: 5,176
KC
badtlc Offline OP
badtlc  Offline OP
Joined: Jun 2006
Posts: 5,176
KC
Originally Posted By: Colt45ws
Are you SURE its the belt slipping? It seems rather unlikely at idle. I would be looking closer at a bearing in the accessory drive somewhere.


Positive. Keep in mind it only happens when all of the following is true:

1) Must be hot outside (90F+ and sunny) and under the hood.
2) The AC must be running
3) The transmission must be in Drive (no noise when unloaded in neutral)
4) Must be stopped holding the vehicle in position with foot on the brake(at stoplight or stop sign)

If any of those things is missing, the noise ins't there. I would have assumed everything was strapped directly to the engine so I don't get why engine loading has an impact on this. I would think this type of noise should happen all the time.

Last edited by badtlc; 07/09/18 07:57 AM.

2007 Ford Escape XLS 2.3L ATX, M1 AFE 0W20, Fram TG, 165k+
2015 Chrysler T&C, 75k+, M1 AFE 0W20, Fram TG OF
Re: Serp Belt Slipping/Chirping [Re: JMJNet] #4808854
07/09/18 07:40 AM
07/09/18 07:40 AM
Joined: Jun 2006
Posts: 5,176
KC
badtlc Offline OP
badtlc  Offline OP
Joined: Jun 2006
Posts: 5,176
KC
Originally Posted By: JMJNet
Compressor may cause the chirping like an almost seized clutch or the bearing in the clutch is starting to go bad?
Also check other parts attached to the belt like Alternator, etc.


In addition to the idler pulley and tensioner being new, the alternator and compressor have both been replaced in the last year. Just about everything on the serp belt is new.

It only happens when it is HOT under the hood. Could be related to a grease or something thinning out...frustrating.


2007 Ford Escape XLS 2.3L ATX, M1 AFE 0W20, Fram TG, 165k+
2015 Chrysler T&C, 75k+, M1 AFE 0W20, Fram TG OF
Re: Serp Belt Slipping/Chirping [Re: badtlc] #4808868
07/09/18 08:02 AM
07/09/18 08:02 AM
Joined: Dec 2006
Posts: 1,703
NY, NY
NYEngineer Offline
NYEngineer  Offline
Joined: Dec 2006
Posts: 1,703
NY, NY
I had a 1998 Yukon years ago that I bought with about 50,000 miles on it. The belt always chirped a little and drove me nuts. I bought a new belt exactly like the one that was on there and it would be quiet for a short time and start the exact same chirping again. Didn't matter if it was Gates, GM or whatever, they all did it.
Finally, I got smart and went to Ernie the counter guy who was very knowledgeable and asked what length belt was SUPPOSED to be on my truck. Low and behold, there were two available. The heavy duty alternator option had a half inch longer belt than the standard one. My truck did not have heavy duty charging but someone had put the belt on and I kept repeating the mistake.
Finally got the right belt and end of problem.

Re: Serp Belt Slipping/Chirping [Re: badtlc] #4809259
07/09/18 01:51 PM
07/09/18 01:51 PM
Joined: Aug 2006
Posts: 9,808
Central Washington
Colt45ws Offline
Colt45ws  Offline
Joined: Aug 2006
Posts: 9,808
Central Washington
Originally Posted By: badtlc
Originally Posted By: Colt45ws
Are you SURE its the belt slipping? It seems rather unlikely at idle. I would be looking closer at a bearing in the accessory drive somewhere.


Positive. Keep in mind it only happens when all of the following is true:

1) Must be hot outside (90F+ and sunny) and under the hood.
2) The AC must be running
3) The transmission must be in Drive (no noise when unloaded in neutral)
4) Must be stopped holding the vehicle in position with foot on the brake(at stoplight or stop sign)

If any of those things is missing, the noise ins't there. I would have assumed everything was strapped directly to the engine so I don't get why engine loading has an impact on this. I would think this type of noise should happen all the time.

Okay, I just ask because I watched a compressor that was spinning lock right up in front of my eyes, and the compressor clutch began to smoke rather than the belt slipping over the compressor pulley, so it seems it takes a lot to get a serpentine to actually slip.


-Colton
2002 Ford Crown Vic PI 207k, Ex-Kootenai County, ID Unit #42
Down for engine swap
2003 Ford Crown Vic PI 75k
Castrol EDGE HM 5W30, Fram XG2

BOB IS THE OIL GUY® Powered by UBB.threads™