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1997 Land Rover Discovery LOST POWER WHEN DRIVING

Tiny
GODWINMD
  • MEMBER
  • 1997 LAND ROVER DISCOVERY
  • V8
  • 4WD
  • AUTOMATIC
  • 110,000 MILES
I start the truck and it idles and runs fine at all RPM's and revs up just fine.

When I drive the truck and begin accelerating the truck runs fine for the first 10 or 15 seconds, then the truck begins to sputter and loses power.

The longer I drive the truck the more power it loses. After a few minute of driving the trucks the max speed is around 20mph.

I have replaced the in-line fuel filter and I still have the probelm. I also about a week ago put some BG-44K in the fuel system but thats had no effect.

Any ideas?

Thank you.
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Monday, July 19th, 2010 AT 7:36 PM

2 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Possibilities: Inspect and test all the following listed below:

Oxygen sensor.
Catalytic converter.
Fuel injectors dirty/sticking.
Mass airflow sensor/Airflow meter.
Throttle position sensor.
Crankshaft position sensor
Knock sensor
Manifold absolute pressure sensor.
EGR Valve
Fuel pressure regulator leaking or defective fuel pump.
False air leakage.
Fuel contamination.
Foul/defective spark plugs.
Open spark plug wires.
Ignition coil/Coil packs defective.
Incorrect ignition timing.
Cap and rotor.

Note:If it doesn't apply disregard it.
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Monday, July 19th, 2010 AT 8:07 PM
Tiny
GODWINMD
  • MEMBER
  • 2 POSTS
Thanks for the respnse.

I pluged in a OBD2 - code reader and it came back with the following codes

P0130-- ---02 CIRCUIT (BANK 1 SENSOR 1)

P0306 --- CYLINDER 6 MISSFIRE DETECTED

P1313 ----MISSFIRE RATE CATALYST DAMAGE FAULT - BANK 1

P1316 ---- MISSFIRE RATE EXCEEDS EMISSIONS

IM THINKING THIS COULD BE AN OXYGEN SENSOR?

ANY HELP WOULD BE GREATLY APPRICIATED.

THANK YOU.
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Wednesday, July 21st, 2010 AT 12:15 AM

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