2002 Mercury Cougar Runs but no power

2002 MERCURY COUGAR
175,000 MILES • 2.5L • 6 CYL • FWD • AUTOMATIC
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ROB FIELDS
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  • 4 POSTS
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
Jul 10, 2015 at 5:23 AM
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HMAC300
  • ✓Experienced Mechanic
  • 48,601 POSTS
check with key on engine off might be a bad regulator see pic to test
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Jul 10, 2015 at 5:37 AM
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ROB FIELDS
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  • 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.
Jul 10, 2015 at 5:57 AM
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HMAC300
  • ✓Experienced Mechanic
  • 48,601 POSTS
then check the regulator it shold only be like 39-55 psi
Jul 10, 2015 at 7:08 AM
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ROB FIELDS
  • MEMBER
  • 4 POSTS
will do thanks
Jul 10, 2015 at 7:22 AM
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