LT1/LT4 Tech 1993-1997

BBK throttle body

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  #1  
Old 09-18-2011, 04:45 PM
numskull223's Avatar
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Default BBK throttle body

I took my throttle body, cleaned it real good, took out the IAC and throttle pos, sensors, cleaned those. I noticed 2 tubes that have been cut off, i blew threw and they are connected, blow in one ais comes out the other. What are they and is can that cause the car not to idle consistly.
 
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  #2  
Old 09-18-2011, 05:19 PM
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Those are coolant passages to keep the TB warm. The do not affect idle.
 
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Old 09-18-2011, 05:33 PM
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Oh ok. I guess they by passed them when they built this car. My engine light comes on when it idles down real low like around 700. As soon as i keep i rev'd at 1000 the light goes off......
 
  #4  
Old 09-18-2011, 07:40 PM
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have it scanned for trouble codes and let us know what code/s come up.
 
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Old 09-18-2011, 11:01 PM
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I bypassed mine and haven't had any problems with engine lights or idle
 
  #6  
Old 09-19-2011, 07:50 AM
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Most likely your iac or tps is faulty.

750 should be your baseline set idle
 
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