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What would cause my 2005 Expedition not go over 40mph when I accelerate?

Tiny
TERRYS
  • MEMBER
  • 2005 FORD EXPEDITION
  • 101,000 MILES
I was told by ford mechanic at dealership the catalytic converters were bad. So I removed both of them and still same problem.
Saturday, May 5th, 2012 AT 6:40 PM

5 Replies

Tiny
FIXITMR
  • MECHANIC
  • 9,990 POSTS
Does engine rev up ok in neutral/park?
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Saturday, May 5th, 2012 AT 7:06 PM
Tiny
TERRYS
  • MEMBER
  • 7 POSTS
It only will rev 2.5 rpm then sputters
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Sunday, May 6th, 2012 AT 1:39 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Is the o2 sensors working with the cats gone?

Roy
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Sunday, May 6th, 2012 AT 3:48 AM
Tiny
TERRYS
  • MEMBER
  • 7 POSTS
The sensors that are on converters are not connected but there is another as pipe begins on each side still connected
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Sunday, May 6th, 2012 AT 4:12 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
With no o2 sensors, it will run bad

cats can be checked by measuring back pressure. You need to put it all together again, get it to someone who can perform this test and verify so expensive guessing goes away.

Roy
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Sunday, May 6th, 2012 AT 4:20 AM

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