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Damien · 01-31-2018, 09:08 PM

I think the EGR valve is a good start. I have found that almost anything will set an EGR code on a TBI engine. My '92 K1500 was giving me drive-ability issues last fall after swapping the engine and I checked nearly every sensor and the ignition swapping the parts with others that I have. One morning was especially bad making me think fuel pump. The truck was running on 7 psi.

If it were me, I would pull a vacuum on the EGR valve to make sure it is opening. If it is pulling the EGR valve off to clean up the valve may be the next step. If this checks out or does not change anything I would check the fuel pressure. I believe the spec is 11-15 psi for the TBI.

01-31-2018, 09:08 PM	#9
Damien Registered User Join Date: Mar 2007 Location: Farmington, MN Posts: 928	Re: More TBI weirdness I think the EGR valve is a good start. I have found that almost anything will set an EGR code on a TBI engine. My '92 K1500 was giving me drive-ability issues last fall after swapping the engine and I checked nearly every sensor and the ignition swapping the parts with others that I have. One morning was especially bad making me think fuel pump. The truck was running on 7 psi. If it were me, I would pull a vacuum on the EGR valve to make sure it is opening. If it is pulling the EGR valve off to clean up the valve may be the next step. If this checks out or does not change anything I would check the fuel pressure. I believe the spec is 11-15 psi for the TBI. __________________ I can still count my vehicles on two... wait three hands.