C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

can someone help with egr problem

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Old Jul 11, 2004 | 03:44 AM
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calebchoson
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From: san antonio texas
Default can someone help with egr problem

Can the egr not being properly disabled cause high crankcase pressure. I have tubes which are not connected because my mechanic says he disabled my egr. These tubes are blowing hot air from the exhaust manifolds and I also have 1 tube thats sucking air in. My throttle body is connected also but the mechanic plugged the top area where the hose connects.
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Old Jul 11, 2004 | 07:43 AM
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From: Database Error Indiana
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Egr should not cause crankcase pressure. Sounds like your mechanic sucks. You should not have opened tubes blowing hot air or sucking vacuum. This sure sounds like sloppy work.
Is the vent tube from the passenger side VC hooked up to the TB? Is the PCV tube hooked up to the intake near injector #5? These control crankcase pressure and need to function.
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Old Jul 11, 2004 | 11:25 AM
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From: CALGARY ab
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ther should be no vaccumm leaks with egr disconnected..

on the throttle body near the TPS..top hole is for air supply to crankcase. (rear hole on tapet cover passenger side)the hole below is a vaccum line to the emmisions tank (below the left head lite)...rember the PVC valve is still connected to valve cover (driver side to base on intake)

i total eliminated the egr ,EGR sensor, replaced air pump, removed valving, and the exhaust tube(welded them up)..i use an oil breather instead of connecting to TB ( plugged TB)and PVC in its' respective place.. the only vaccum lines left is the one that operates the brake booster and the cruise control and i think some teed in vaccum for the heat/air actuators.
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