Ford Enthusiast Unofficial Resource

Go Back   Ford Forum - Enthusiast Forums for Ford Owners > Ford Cars > Ford Crown Victoria
Sign in using an external account
Register Forgot Password?
Search


Welcome to Ford Forum!
Welcome to Ford Forum,

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!


Reply
 
 
 
 
LinkBack Thread Tools Search this Thread
  #1  
Old 04-10-2009, 09:24 PM
Junior Member
 
Join Date: Apr 2006
Posts: 5
Default "clunk" noise upon pressing or releasing gas pedal

Hello. I just picked up a 2005 Crown Vic LX Sport with about 36K miles a few weeks ago. When coasting along at 30 to 40 MPH, and the gas is pressed to accelerate, there is a distinct “clunk” noise that originates from under the car. The noise happens when initially pressing the gas pedal and then again when the pedal is released. Anybody experience or hear of anything similar? What would you be looking at first?
Reply With Quote
  #2  
Old 04-11-2009, 07:43 AM
Junior Member
 
Join Date: Apr 2009
Posts: 3
Default

The first thing I'd look at are the engine and transmission mounts.
Reply With Quote
  #3  
Old 04-11-2009, 09:56 PM
Junior Member
 
Join Date: Apr 2006
Posts: 5
Default

Thank you for your recommendation. Here’s what my local ford garage has come up with so far. Long story short, they identified a noise during their road test of the car, but it apparently wasn’t the same noise I was hearing. Their diagnosis was that the backlash was excessive (measurement of 0.018). They pretty much rebuilt the rear end of the car, but that didn’t fix the original concern that I described. Fortunately, the car came with a warranty, but I’m concerned where things are headed as they’ve already sunk a good bit of money into it.
Reply With Quote
  #4  
Old 04-17-2009, 03:44 PM
Junior Member
 
Join Date: Apr 2009
Posts: 1
Default

Is it coming from the rear axle? I had a '95 Chevy C1500 that would do the same thing. Whenever it started clunking, I'd have the U-Joints lubed and it would cure the problem, usually about every 10-15k.
Reply With Quote
  #5  
Old 04-23-2009, 08:44 PM
Junior Member
 
Join Date: Apr 2006
Posts: 5
Default

I can’t tell exactly where it’s coming from. The dealer put chassis ears on it and concluded the sound was coming from transmission. They tore it down and replaced the direct clutch. That didn’t eliminate the noise. Their conclusion is this: We checked the entire drivetrain and replaced everything that was out of spec. They believe noise “to be nature of the vehicle”. They have openly stated that they still believe it is a drivetrain noise, but they’re now insisting that they need to compare a vehicle with the exact same transmission and rear end. Issue #1: It’s going to be tough to find another 2005 Crown Vic LX Sport (or a 2005 Crown Vic LX with the Handling and Performance Package) around my area. Issue #2: If we find a comparable vehicle and it exhibits the same noise, that doesn’t make the noise “common” to that vehicle. (i.e. Two vehicles exhibiting the same characteristics out of hundreds doesn’t statistically make it common to those vehicles). Issue #3: If we were to clearly establish that the noise was common to most or all of these vehicles that doesn’t automatically mean that the noise doesn’t warrant some current correction or won’t warrant some future correction. Issue #4: If the comparable vehicle doesn’t exhibit the same noise, they weren’t able to say what course of action they would take. So now I’m looking at working my way up the ladder at the dealer and with Ford Motor Company.
Reply With Quote
  #6  
Old 07-12-2010, 10:17 PM
Junior Member
 
Join Date: Jul 2010
Posts: 3
Default

Try checking universal joints on driveshat probably got a bad one if it gets real bad it will also cause a vibration inside car driving down road
Reply With Quote
Old 07-12-2010, 10:17 PM
 
 
 
Reply

Tags
2005, accelerating, clunk, clunking, clunks, clutch, ford, fusion, gas, mustang, noise, press, pressing, ranger, transmission

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


Advertising
Our Sponsors
Vendor Directory
New Sponsors
All times are GMT -5. The time now is 08:09 AM.

© Internet Brands, Inc.


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.

SEO by vBSEO ©2010, Crawlability, Inc.