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Old 04-11-2004, 09:54 PM   #1
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Default the tic tac test

hey ya'll...for anyone keeping up on my problems, thanks!

we did a little testing today, because i told my dad (mechanic) how i was only getting 3 lbs of boost max. i know he doesnt really want to make my car go any faster, but he helped me out. we took off the supercharger cover and started fiddling around with everything. he was unhooking a vacuum hose, and other things. he asked me for something to plug the hose with, so i gave him a tic tac, LOL

we took it out on a test drive and it got 8lbs of boost no problem. i was so happy!! heres the pic, the arrows show the tic tacs, and the circled piece is what we think is bad. so yeah, if you are not getting the boost you think you need, try this

SOOOO...does anyone know what the circled part is called, how to get a new or used one, and how much its gonna cost. he said running the motor for long amounts of time with that plugged is not good. maybe this is the answer to all my problems
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Old 04-11-2004, 11:34 PM   #2
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isn't that the boost control solenoid?
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Old 04-11-2004, 11:43 PM   #3
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Yes it is. Here'* another test to try. Take the tic tacs out, and hook those linea back up normally. Take the vac line off the bottom of that actuator (round thing) and test drive it. With those tictacs, aren't you running at full boost all the time? This other way should run normal. Although it could have a good reason to dump boost. Get codes.
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Old 04-12-2004, 12:42 AM   #4
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John is right. With that line plugged, your wastegate actuator can't dump boost at idle, or decelleration. You've plugged the wrong one for a bypass.

That part is about 30 bucks from the dealer, and cheaper from www.gmpartsdirect.com

The 8-digit GM part number is 12353309 (for 92-95).
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Old 04-12-2004, 01:09 AM   #5
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Quote:
Yes it is. Here'* another test to try. Take the tic tacs out, and hook those linea back up normally. Take the vac line off the bottom of that actuator (round thing) and test drive it. With those tictacs, aren't you running at full boost all the time? This other way should run normal. Although it could have a good reason to dump boost. Get codes
when we were running with the tic tacs, it was not running with boost all the time, however, just disconnecting that bottom tube did the same thing, thanks for the tip, ill order the part now
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Old 04-12-2004, 01:16 AM   #6
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How did it not run at boost all the time? You had all the bypass valve controls unplugged. It should have stayed shut. You should've had boost all the time, maybe not full boost at low speeds, but boost none the less.
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Old 04-12-2004, 01:18 AM   #7
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maybe i am just not remembering right....oh well

i just ordered the new part, all will be well soon
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Old 04-16-2004, 09:31 AM   #8
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No, even with the boost solonoid bypassed, you will only get boost when accelerating. At idle with the butterfly closed, even though the bypass vavle is closed, the engine is still restricted for airflow thus creating vacuum. mine reads about 22hg. It will boost sooner under load with the bypass totally closed. I think this is what harofreak00 is refering to. Not the actual state of the blower, but what the gauge was reading.

MOBILE
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Old 04-16-2004, 01:57 PM   #9
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I guess that makes some sense.

Is your bypass always closed?
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Old 04-16-2004, 02:35 PM   #10
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Quote:
Is your bypass always closed?
who is that directed to?
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