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1996 Ford F-150 no power and hesitation

Tiny
SEATRAX
  • MEMBER
  • 1996 FORD F-150
  • 4.6L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 200,000 MILES
Below 2500 rpm the engine hesitates and surges but above 2500 it runs ok. Haven't done anything yet to the truck.
Wednesday, September 10th, 2014 AT 4:45 PM

7 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 POSTS
Has the check engine light come on?
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Wednesday, September 10th, 2014 AT 5:21 PM
Tiny
SEATRAX
  • MEMBER
  • 14 POSTS
No check engine light.

Note: I'm trying to find a better help site. Have tried just answer, service was terrible, tried identifix, very expensive but helpful. You all seem to be very helpful, just let me know how much I should donate/pay for each problem. Again, each problem not each question so I will have an idea of how much to pay.

Thanks,
Jim
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Wednesday, September 10th, 2014 AT 5:33 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 POSTS
Jim:

Don't worry about a donation. At the end, if you want to, that would be great. ANYTHING is appreciated. If you can't afford a donation, consider it free and one person just trying to help another.

Since the light is on, it becomes a guessing game. I have some questions. First, have you checked fuel pump pressure? When was the last tune up? Have you checked to see if the catalytic converter is possibly plugging?

Joe
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Wednesday, September 10th, 2014 AT 5:45 PM
Tiny
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  • MEMBER
  • 14 POSTS
Drilled hole and checked pressure in cat converted, thats ok. No sure about the last tune up. The fuel pressure is around 52 psi.
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Wednesday, September 10th, 2014 AT 6:15 PM
Tiny
SEATRAX
  • MEMBER
  • 14 POSTS
Unplugged the map sensor and it runs ok but I think it is in the limp mode.
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Wednesday, September 10th, 2014 AT 6:16 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 POSTS
Pull a couple spark plugs and check their condition.
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Thursday, September 11th, 2014 AT 5:26 AM
Tiny
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  • 14 POSTS
Will pull the plugs today, thanks
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Thursday, September 11th, 2014 AT 6:06 AM

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