2001 Ford Escape Sucking sound when accelerator pressed

Tiny
JOSHUAFENDER755
  • MEMBER
  • 2001 FORD ESCAPE
  • 2.4L
  • 6 CYL
  • AWD
  • AUTOMATIC
  • 150,000 MILES
A tune up was done to my vehicle and when the car was reassembled it now makes a sucking sound when the accelerator is pressed. There is also a hissing sound like a vacuum leak. THERE IS NO LEAK, I REPLACED EVERY ONE OF THE VACUUM LINES.
The vehicle has been torn back down and reassembled 5 times now and nothing can be found to be the cause of this issue. Please help me.
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Wednesday, November 19th, 2014 AT 2:39 PM

7 Replies

Tiny
HMAC300
  • EXPERT
Sucking sounds are normally vacuum leaks, try using a can of choke cleaner and spray it in different areas around the intake. If the sound stops you probably found the area where the leak is. Also it's very important that all of your air ducts going to engine are sealed correctly as this will do it as well. That includes holes in the duct work.
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Wednesday, November 19th, 2014 AT 3:02 PM
Tiny
JOSHUAFENDER755
  • MEMBER
All vacuum lines have been replaced with new hoses
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Wednesday, November 19th, 2014 AT 3:38 PM
Tiny
HMAC300
  • EXPERT
Do what I said with the choke cleaner it cold also be your vacuum assist for power brakes. For something like this have a local pro look at it.
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Wednesday, November 19th, 2014 AT 3:43 PM
Tiny
JOSHUAFENDER755
  • MEMBER
As I mentioned in a previous posting of a question, this has happened to two different vehicles, both worked on by the same person, both cars have identical symptoms. Both ran perfect before the tune up was done.
1999 Chrysler sebring v6 lxi
2001 Ford escape v6
There must be something that causes this that the mechanic simply damaged? The youtube video shows the exact symptoms.
http://www.youtube.com/watch?v=YRyZAPlfT10
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Wednesday, November 19th, 2014 AT 5:38 PM
Tiny
HMAC300
  • EXPERT
Have another mechanic look at it if it's two different cars then it's got to be something like the air intake not connected correctly or firing order etc. From your description I have given you what I can and I would need to further look at it physically to properly diagnose the problem.
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Thursday, November 20th, 2014 AT 6:22 AM
Tiny
HMAC300
  • EXPERT
It sounds smilar to a vacuum leak or the air duct has a hole in it someplace or not connected to the maf. However if you have a K&N filter or similar it will sound like that because all sound deadeners from the manufacture have been removed in the name of performance. When you do that spray choke cleaner around the throttle plate shaft and see if it disappears if it does then you have a vacuum leak at shaft. Also if the mechanic pulled the throttle body off the gasket may not have seated correctly or same one was used so is causing that. Other than that without seeing this my self I can offer nothing else suggestion wise.
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Thursday, November 20th, 2014 AT 1:12 PM
Tiny
HMAC300
  • EXPERT
One other thing if this does this all the time then have the engine smoke tested if you see smoke it leaks.
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Thursday, November 20th, 2014 AT 1:23 PM

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