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2002 Mercury Cougar Runs but no power

Tiny
ROB FIELDS
  • MEMBER
  • 2002 MERCURY COUGAR
  • 2.5L
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 175,000 MILES
Replaced fuel pump, filter, checked catalytic converters, fuel pressure kept climbing to 72lbs with just key on, fluctuates from 31.6 to 50.9 running. If going up hill loses all power but still runs. No codes. Acts like bad fuel pump. Engine is not missing. Just no power
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Friday, July 10th, 2015 AT 12:23 PM

4 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Check with key on engine off might be a bad regulator see pic to test
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Friday, July 10th, 2015 AT 12:37 PM
Tiny
ROB FIELDS
  • MEMBER
  • 4 POSTS
I did this test. It started at 59lbs and rose to 72.7lbs. Which if I am correct the max is 65lb on these.
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Friday, July 10th, 2015 AT 12:57 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Then check the regulator it shold only be like 39-55 psi
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Friday, July 10th, 2015 AT 2:08 PM
Tiny
ROB FIELDS
  • MEMBER
  • 4 POSTS
Will do thanks
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Friday, July 10th, 2015 AT 2:22 PM

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