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Lack power

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Old Jan 4, 2004 | 01:32 AM
  #1  
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paora
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From: Mt Maunganui New Zealand
Lack power

I have a 4.0L Explorer that quite recently lost a lot of power. Its quite slow off the mark until it reaches about 3000 rpm then it operates normal. There are a couple of other things that I have noticed about the same time, these include a little bit longer than normal for the brakes to pressurise (or not be so hard under pedal) ( it takes about a 30 secs rather than the normal near immediate) are these all interlinked? The Air filter was a bit dirty could that have been the problem? I checked the airfilter yesterday and ordered one in. Any ideas or help would be appreciated. But it does lack a lot of power at the moment. There are no check engine lights on, and fuel consumption is fairly normal.
 
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Old Jan 4, 2004 | 12:27 PM
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mustangsvt
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Yes air filter could be it. That could also be wasting some gas...even if it is very slightly dirty, i found that it wastes a lot of gas. Is there a pep boys near you? If so, get purolater air filter from there...really low restriction and very cheap (about $11.99)... Motorcraft sucks... too restrictive.
 
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Old Jan 4, 2004 | 12:47 PM
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norcalcapri
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sounds to me like a vacuum leak. that would explain both of the problems, because the brake booster runs off of a vacuum line. Unfortunately, vacuum leaks can be loads of fun to find. Check for any cracked lines, also loose or broken connections. I would check first around where the brake booster gets its feed though. hope this helps.

-paul
 
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Old Jan 4, 2004 | 12:48 PM
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rustbucket64f100
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sounds like you may have a vaucum leak somewhere.
 
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Old Jan 5, 2004 | 02:28 AM
  #5  
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paora
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From: Mt Maunganui New Zealand
Thanks Guys

Thanks guys will check it all out tomorrow.
 
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Old Jan 7, 2004 | 11:13 PM
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paora
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From: Mt Maunganui New Zealand
Okay I replaced the air filter, next problem how do i check the various vaccum hoses for fault? I just went for the primitive version of looking for holes and spilts. Any one have any idea on how many to check? LOL is all sounded easy.
 
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