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Where is the EGR valve located on a 1999 Chevrolet S10 SFI four cylinder?
Wiki User
∙ 17y ago
this egr valve is a PCM (powertrain control module) controled pintle at the intake manifold. there is a thin tube running from the exhaust manifold around the firewall side of the engine to the EGR module?, this isn't a vacuum/sileniod controled EGR. It is a Linear control system, the pintle allows exhaust gas to flow based on the VSS(vehicle speed sensor) IAT(?) and coolant temperature sensor.Good luck
Wiki User
∙ 17y ago
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