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1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 10-28-2009, 10:31 AM   #11
DINOSAURUS BOOSTUS

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Quad Driver B is a fun one. Problem with the pcm'* of your generation IMO is that they weren't specific enough. Yet they were better than their predecessors.

Having 4 things to look at gives you a starting point. Check each of the other items. TCC you can check by driving and gently touching the brake pedal over 45mph to see if the TCC disengages and reengages shortly afterward. The EVAP soleniod you need to have the car up to temp and running for X amount of time (sorry I forget the correct length) , then the evap will buzz/actuate for a moment. The BCS will usually work 100% properly and give no symptoms of being bad.

This happened to me, when I owned a 95. No symptoms, I shotgunned a BCS and fixed the issue. I do suggest testing all the other items first though.
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Old 10-28-2009, 01:22 PM   #12
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The boost is lower than normal, I know that.
I also donīt get the throttle response Iīm used to.

TCC is working, Iīve checked that.

I donīt have access to a scanner and the local shop that helps me with spare parts, when they are accessible here in Sweden, are very short on mechanics right now.
They havnīt worked with SSEiī* either as there are maybe 5-10 cars overall Sweden...

Can anyone tell me the difference between the BCS and BCA for 92-95 and 96-99?

/Mike
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Old 10-28-2009, 01:27 PM   #13
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BCA = boost control actuator, that'* what moves the boost bypass valve inside the supercharger.

BCS = Boost control solenoid, that'* what opens the valve to allow the vacuum to move the BCA.
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Old 10-28-2009, 01:32 PM   #14
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Sorry, did write it a little wrong.
I was wondering the difference between the years, so a 92-95 BCS vs. a 96-99 and the same about the BCA 92-95 vs 96-99.

/Mike
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Old 10-28-2009, 01:45 PM   #15
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I've found the BCS'* from 92-03 to be interchangable. The BCA 92-95 was metal and slightly different than the 96-03 version.
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