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2001 Disco Check engine light lost of power or speed

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Old Jul 7, 2018 | 05:06 PM
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Default 2001 Disco Check engine light lost of power or speed

Hello to fellow LR Disco owners. I have a 2001 LR Disco 2. I've been facing some issues with my LR. Vehicle doesn't pickup speed quickly. Once I get the car up to 70 mph on highway one I hit a hill I have lost of power.
Took to a local mechanic to get a scan done.
Following codes
P0171
P0174
P1174
P1174
P0300
P0303
P0306
P0307
P0308
P1300
P0563

Compression showed 150 LB in all cylinders. I hope this is helpful and looking for some guidance on what are the best parts to start replacing. Can it be saved?
 
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Old Jul 7, 2018 | 05:12 PM
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With all of those codes...I'd start with the MAF sensor first. Or clear them and take it for a test drive and see what comes back. This is assuming your mechanic has ruled out the obvious stuff, vacuum leaks, tune up, etc...

Brian.
 

Last edited by The Deputy; Jul 7, 2018 at 05:14 PM.
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Old Jul 7, 2018 | 05:45 PM
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He suggested a tune up. I did that 1 year ok not sure if I used the best parts. I habe Bosch double platinum spark plugs and NGK wire set but still have misfire. What plugs and wires you suggest
 
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Old Jul 7, 2018 | 06:33 PM
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Originally Posted by The Deputy
With all of those codes...I'd start with the MAF sensor first. Or clear them and take it for a test drive and see what comes back. This is assuming your mechanic has ruled out the obvious stuff, vacuum leaks, tune up, etc...

Brian.
He suggested a tune up. I did that 1 year ok not sure if I used the best parts. I habe Bosch double platinum spark plugs and NGK wire set but still have misfire. What plugs and wires you suggest
 
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Old Jul 7, 2018 | 07:24 PM
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Bosch plugs are GARBAGE in a LR V8. NGK/Autolite Platinum’s are a much better choice.
 
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Old Jul 7, 2018 | 11:38 PM
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Seeing lean codes and not looking at others I had an issue with a weak fuel pump. I had knock sensor, both bank lean codes, and o2 sensor codes. One day it wouldn't start without turning the key on and off essentially priming the fuel system and it would start fine. Replaced fuel pump, and all codes went away with a clear.
 
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Old Jul 8, 2018 | 10:37 PM
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Originally Posted by User
Seeing lean codes and not looking at others I had an issue with a weak fuel pump. I had knock sensor, both bank lean codes, and o2 sensor codes. One day it wouldn't start without turning the key on and off essentially priming the fuel system and it would start fine. Replaced fuel pump, and all codes went away with a clear.
What spark plugs and wires are you using
 
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Old Jul 8, 2018 | 10:47 PM
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Originally Posted by The Deputy
With all of those codes...I'd start with the MAF sensor first. Or clear them and take it for a test drive and see what comes back. This is assuming your mechanic has ruled out the obvious stuff, vacuum leaks, tune up, etc...

Brian.
I will clean MAF tomorrow. Picked up the car today and seem to have better reaction as far as power not 100% but pickup was a bit better. Will let you know
 
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Old Jul 9, 2018 | 03:11 AM
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Originally Posted by nycent
I will clean MAF tomorrow. Picked up the car today and seem to have better reaction as far as power not 100% but pickup was a bit better. Will let you know
What did your mechanic do? Did he clear codes? Another thing it could be...would be the cats are getting plugged up...if you are seeing a sluggish response at highway speeds. But, you need to get the codes figured out first before doing anything else. Keep clearing them and then tackle whatever one comes back first or more often.

Brian.
 
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Old Jul 9, 2018 | 06:20 AM
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Seems like you really need a complete tuneup. Also showing some injector related codes. Iwould add a bottle injector cleaner half tank then another half tank with another bottle of injector cleanrer.
 
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