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Discussing stalls when i brake real hard in the Modular Mustangs Forum. I just installed stage 2 comp cams and valve springs and it runs great until ...

       

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Old October 27th, 2009, 08:50 PM   #1
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stalls when i brake real hard


I just installed stage 2 comp cams and valve springs and it runs great until it comes to braking, if im going 55 mph and have to stop at a light i can either engine break it till first gear then put it in neutral and pump the gas, or if i use pure brakes the engine doesnt seem to find its idle and drops off and stalls, any suggestions would be great
 

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Old October 27th, 2009, 08:54 PM   #2
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But if you start her up and let it run it idles fine?
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Old October 27th, 2009, 08:55 PM   #3
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yea idles just fine drives just fine
 
Old October 27th, 2009, 08:56 PM   #4
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i even bumped the idle up to see if that would help.. still stalled on hard braking
 
Old October 27th, 2009, 08:58 PM   #5
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Sounds like you have a vacuum issue.
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Old October 27th, 2009, 09:01 PM   #6
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+1 I don't know much about those cars, but what about the IAC?
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Old October 28th, 2009, 12:56 PM   #7
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Did you get tuned for the cams? This is a fairly typical issue for no tune.
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