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Old Dec 15, 2013 | 11:50 PM
  #1  
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tofargone
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From: Carlin, Nv.
No power

Hay I have a 02 v10 with 175000 on it
my problem is if I punch it when my truck down shifts it falls flat on its face and actually starts to slow down usually anything above 2500 rpm it has no power if I gradually bring the rpm up I can get to about 3000 rpm. Below that it is normal do I need a new motor
 
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Old Dec 16, 2013 | 12:33 AM
  #2  
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Moved to the 6.8L V10 forum.

Stewart
 
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Old Dec 16, 2013 | 08:21 AM
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From: Carlin, Nv.
It is in an excursion
 
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Old Dec 16, 2013 | 12:48 PM
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Originally Posted by tofargone
It is in an excursion
Yes it is. But these guys eat, sleep, and drink V10 all day and night.

While some of the guys in the Ex forum know a lot about the V10, everyone in this forum know a lot about the V10, so you should get a lot more help.

I'm just maximizing your chances at getting your problem solved.

Stewart
 
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Old Dec 17, 2013 | 07:31 PM
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Originally Posted by tofargone
Hay I have a 02 v10 with 175000 on it
my problem is if I punch it when my truck down shifts it falls flat on its face and actually starts to slow down usually anything above 2500 rpm it has no power if I gradually bring the rpm up I can get to about 3000 rpm. Below that it is normal do I need a new motor

Can you provide some background about the engine . When was the last time spark plugs changed (with /without rubber boots ,COP's ?) , PCV & its hose and other vacuum hoses changed ? MAF sensor has ever been cleaned ? any CEL light ? fuel filter changed ? fuel pressure checked ?
 
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Old Dec 19, 2013 | 11:45 AM
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From: Carlin, Nv.
I thought it was the plugs they were done late summer but other than the oil and an electrical gremlin I have not touched it there is no engine light this is my wifes truck and it is very dependable never anything with it wife didn't even won't me to change the plugs
 
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Old Dec 19, 2013 | 01:06 PM
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If it were mine , I would start with 3 basic DIY maintenance items;

1- Check/Replace PCV valve& hose and check all other vacuum hoses for cracks ,

2-Clean MAF sensor,

3-Replace fuel filter

If the problem still unfixed , my next step would be getting "fuel pressure readings" from fuel rail.

Good luck,
 
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Old Dec 23, 2013 | 08:18 PM
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I agree completely with the previous posters on things to check, but I would like to emphasize the possibility of a fuel pressure failure under higher engine loading. Been there done that.
 
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Old Dec 30, 2013 | 12:04 PM
  #9  
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From: Carlin, Nv.
Ok I finally got time to change the fuel filter and clean up the maf and it is a lot better I think I need to run some cleaner through the injectors couse it still a touch of lag o and ware do I find the pcv valve I saw a pic online but can not find it anyware under the hood
 
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Old Dec 30, 2013 | 02:47 PM
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My 2003 has the PCV valve on passenger side engine cover , somewhat near firewall . It might have a foam cover over the actual PCV hose . Remove the hose and inspect it closely (including the rubber elbow on throttle side ) for cracks .

Good luck,
 
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Old Dec 31, 2013 | 08:50 AM
  #11  
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From: Carlin, Nv.
Okay thank you the hose is only $15 I think I'll go ahead and change it just to be safe thanks again gies
 
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