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Old May 23, 2009 | 08:45 PM
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Default Braking Help
Everytime I let off the brake while driving my car it instantly jump 3 to 400 rpms. Any advice would be helpful because this is really annoying.
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Old May 24, 2009 | 06:22 PM
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Anyone
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Old May 30, 2009 | 11:38 AM
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Help..
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Old May 30, 2009 | 10:16 PM
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Automatic??

Sounds like your throttle is sticking...
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Old May 31, 2009 | 07:51 AM
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How is possible when the rpms go down as I'm braking.
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Old May 31, 2009 | 09:53 AM
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has anything been changed, tuned?
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Old May 31, 2009 | 10:00 AM
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Probably a vacuum leak in the brake booster.
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Old May 31, 2009 | 10:42 AM
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I swapped my tranny out and since then its been doing it. The tranny sponsor dont have a clue what it could be but a vacuum leak. The hose i can see are plug in.
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Old May 31, 2009 | 07:26 PM
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Originally Posted by JeaneZ28
I swapped my tranny out and since then its been doing it. The tranny sponsor dont have a clue what it could be but a vacuum leak. The hose i can see are plug in.
what does that mean? even if all the hoses are plugged in it wont matter, the booster its self can be leaking.
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Old May 31, 2009 | 09:25 PM
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Originally Posted by 99345hp
what does that mean? even if all the hoses are plugged in it wont matter, the booster its self can be leaking.
It started when I put the new trans in. It wasnt doing it before.
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Old Jun 1, 2009 | 02:33 AM
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vacuum modulated transmission?

maybe its trying to do some odd shifting when you let off the brakes.
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Old Jun 1, 2009 | 05:04 AM
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Originally Posted by spy2520
vacuum modulated transmission?
I dont think it has one its a stage 2 performabuilt.
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Old Jun 1, 2009 | 06:36 PM
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does it do it even if you are just sitting still with the car in park?
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Old Jun 1, 2009 | 10:41 PM
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No its only doing it when I'm above about 20mph
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Old Jun 3, 2009 | 06:04 PM
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did you call the transmission company and ask them if there is a reason why? Could it be in the lockup of the torque converter?
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Old Jun 3, 2009 | 11:47 PM
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Originally Posted by 99345hp
did you call the transmission company and ask them if there is a reason why? Could it be in the lockup of the torque converter?
I posted up in the trans section and the place I got it from didnt have a clue. The other vendors didnt know what it could be either. All they said was vacuum leak but it just happen right after the swap. I thought it might be the stall but I would like to know before I spend 8 or 900 dollars on a new one.
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