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Old 03-30-2013, 11:52 PM   #11
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While cold it maintains higher rpm's until it gets hot, when hot IAC can still adjust but is not enough vacuum to maintain it running. IAC if it gets stucked, gets way higher rpm than that...vac leak, vac leak, vac leak...are the brakes or the clutch acting weird sometimes?
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Old 03-30-2013, 11:53 PM   #12
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its the little filter that sits outside of the tank of the fuel pump canister. getting fuel cut off is a good sign. it almost sunds like that's what you are getting. all thou only time ive gotten fuel cut off was when I tried 18psi on stock pump, and during boost it will JOLT real hard
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Old 03-30-2013, 11:56 PM   #13
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Weird you say that..

Brakes aren't working.. I have to slam the pedal in order for some stopping.. I was told it could be the master cylinder.. I was planning to address that when I get it running..





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Old 03-30-2013, 11:57 PM   #14
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So fuel cut off would make the car act like that at warm temp? And not cold?


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Old 03-31-2013, 05:58 AM   #15
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Quote:
Originally Posted by LouBomb View Post
Weird you say that..

Brakes aren't working.. I have to slam the pedal in order for some stopping.. I was told it could be the master cylinder.. I was planning to address that when I get it running..





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Is due to the vac leak, nothing wrong with the brakes they are designed to work with a vac pressure you are not getting to, again is a leak and pretty big too.

Edit: if you overwork the booster by pumping the brakes, you'll have idle and brakes for a very short time.
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Old 03-31-2013, 12:03 PM   #16
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bottom of the intake manifold is the brake booster. trace it when the car is cold and do what italo has told me to do, spray brake cleaner on the line and see if the rpm changed
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Old 03-31-2013, 12:13 PM   #17
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He needs to check everywhere, weird acting brakes is a symptom of a bigger leak not that there is something bad, can always start the engine and inspect the booster hose to see if it is collapsing, but leak can be anywhere.
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Old 04-01-2013, 11:06 AM   #18
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I was looking for leaks and I couldn't find any... :(( My question still remains tho.. Would the brakes really have to do much with my car bogging down and dying only at warm temp? Wouldn't it affect it all the time, at all temps?






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Old 04-01-2013, 11:17 AM   #19
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Like I said before, brakes acting weird is a symptom of a leak, your engine produces a vacuum brakes and clutch need to work, when you have a leak the needed vacuum would not be there and brakes or clutch can act funny.
You won't see a leak, need to test for it, I explain to Sean what I do and he found a write up I like.
http://www.focusfanatics.com/forum/r...er-5-02-a.html
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Old 04-09-2013, 03:21 PM   #20
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I have a quick question, I have the diablo chip can I use a diablo tuner to datalog?


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