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1999 Ford Ranger Thumping Sound

Tiny
BETHSITTON
  • MEMBER
  • 1999 FORD RANGER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 197,000 MILES
When I arrived at work after a 28 mile drive on the interstate I could hear a thumping noise coming from under the hood. I turned off the engine and the thumping continued. I counted 65 thumps after the engine was turned off.
Any ideas?
Tuesday, September 8th, 2009 AT 6:47 AM

9 Replies

Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
Check your cooling system, could be boiling in the radiator you hear! Check for stuck thermostat.
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Tuesday, September 8th, 2009 AT 7:46 AM
Tiny
BETHSITTON
  • MEMBER
  • 4 POSTS
If the thermostat was stuck and the radiator water was boiling, would the gauge on the dash indicate overheating?
My thermostat was just replaced about 2 months ago.
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Tuesday, September 8th, 2009 AT 1:35 PM
Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
Maybe! Fords tend to not indicate accuratly enough, my Sable can boil all antifreeze out and NO movement past normal on the gauge. Check antifreeze level.
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Tuesday, September 8th, 2009 AT 3:33 PM
Tiny
BETHSITTON
  • MEMBER
  • 4 POSTS
Thanks, I'll do that. Do you want to know the outcome?
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Wednesday, September 9th, 2009 AT 6:33 AM
Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
It's always nice to find out the results!
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Thursday, September 10th, 2009 AT 2:34 AM
Tiny
BETHSITTON
  • MEMBER
  • 4 POSTS
Well, that wasn't it. Could the thumping be related to the air conditioning system. Condenser? It's so strange that the thumping goes on after the engine has been shut off.
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Monday, September 14th, 2009 AT 8:07 AM
Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
A/C pressures will equalize after it's shut off, if it's thumping there could be a restriction in the system, how good does the a/c work?
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Monday, September 14th, 2009 AT 1:08 PM
Tiny
DENIS POOLE
  • MEMBER
  • 1 POST
My ford did the same thing, ended up being the thermostat and seal needed replacing. Fixed a lot of my radiator overheating problems and leaks
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Monday, January 13th, 2020 AT 2:51 PM
Tiny
KASEKENNY
  • MECHANIC
  • 18,907 POSTS
Thanks for the addition to this site. I am sure that info will help others. Please come back when you have an issue that we can assist with.
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Monday, January 13th, 2020 AT 3:09 PM

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