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1997 Ford Thunderbird Engine Rough

Tiny
CAMILO13
  • MEMBER
  • 1997 FORD THUNDERBIRD
  • V8
  • 2WD
  • AUTOMATIC
  • 145,000 MILES
Plastic intake manifold was leaking coolant and replaced it with new intake manifold (Dorman). Also replaced fuel injector seals, TPS, EGR valve, spark plugs new fuel filter and thermostat. Im an old pro at fixing cars so can gurantee the intake was properly installed and ignition wires also correct.

1) The engine runs rough in drive. It runs fine in Park and neutral.

2) Coincidently the battery was disconnected during the repairs (gurantee no electrical shorts). Now the key remote will not operate, and the dome light does not work.

3) The battery voltage is at 12.5 volts.
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Monday, October 4th, 2010 AT 9:05 AM

4 Replies

Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
Is the check engine light coming on at all?
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Monday, October 4th, 2010 AT 9:15 AM
Tiny
CAMILO13
  • MEMBER
  • 4 POSTS
No check engine light is showing. I have an OBDII tool and it does not register any codes.
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Monday, October 4th, 2010 AT 3:08 PM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
You likely don't have a misfire or it would set a code. Pull your EGR valve and see if it is stuck open with carbon or anything.
You probably should have it smoke tested for any vacuum leaks.
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Monday, October 4th, 2010 AT 3:15 PM
Tiny
CAMILO13
  • MEMBER
  • 4 POSTS
The egr valve was replaced along with the new intake manifold. The throttle body and passages were also cleaned.
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Monday, October 4th, 2010 AT 3:37 PM

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