| Re: Removal of the emissions air tubes from the exhaust manifold |
Subject: Re: Removal of the emissions air tubes from the exhaust manifold by Aboatguy on 2009/12/6 4:10:56 I wonder why air was required on the Y bodies....when it was legally removed from the b-bodies? Technical - Water in AIR Pump and/or DTC P0410, P0412, P0415, P0416, P0100, P0101, P0102 or DTC 48 (AIR System Disable Procedure) #01-06-04-011 Water in AIR Pump and/or DTC P0410, P0412, P0415, P0416, P0100, P0101, P0102 or DTC 48 (AIR System Disable Procedure) 1995-1996 Buick Roadmaster 1995-1996 Cadillac Fleetwood 1995-1996 Chevrolet Caprice, Impala SS with 4.3L or 5.7L Engine (VINs W, P -- RPOs L99, LT1) Condition Some customers may comment of a hesitation during heavy/full throttle acceleration. A 1996 vehicle may also set any of the following DTCs: P0410 P0412 P1415 P1416 P0100 P0101 P0102 A 1995 vehicle may set a DTC 48. There will also be evidence of water in the AIR pump. Cause Under high engine speed and load conditions, hot exhaust gasses may leak past the air check valves. As the exhaust gasses in the air tube cool, water vapors collect into the AIR pump. As the vehicle is driven, condensation from the AIR pump may come into contact with the Mass Airflow Sensor through the AIR inlet hose. This condition may cause a hesitation on acceleration and may also set the DTCs. Correction To correct this condition, a Secondary AIR Injection Pump disable procedure has been developed. (It has been determined that the Secondary AIR Injection system is not required to meet emission requirements for these vehicles only.) In other words, you can remove the AIR System all together and on a 96 model B-Bodys, A GM Dealer will reprogram your PCM to delete the AIR System out of it per the TSB (Technical service bulletin) #01-06-04-011. Just give them that number if you still have the AIR system in your car and want to get rid of it. There also a Sticker they put on the Radiator support of the car for those that have to do Emissions testing that says it's been legally removed. __________________ |
