The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - 1998 vortec 5.7 bogs down on acceleration

diveplane · 01-15-2018, 06:27 PM

[QUOTE=Tom;8161587]Go ahead and quote where he said he eliminated the O2 sensors, we'll wait.
On top of that the front O2's are not mounted in the manifolds, they are in the down/crossover pipes that lead to the cats after the manifolds.

OP- have you actually tested fuel pressure or are we just making guesses about stuff right now?[/QUOTE

no not tested fuel pressure myself nope, my unit runs fine.

normally u can hear the fuel pump engage for around 2 secs when ignition turns on.

01-15-2018, 06:27 PM	#7
diveplane Registered User Join Date: Nov 2016 Location: Tulsa Posts: 418	Re: 1998 vortec 5.7 bogs down on acceleration [QUOTE=Tom;8161587]Go ahead and quote where he said he eliminated the O2 sensors, we'll wait. On top of that the front O2's are not mounted in the manifolds, they are in the down/crossover pipes that lead to the cats after the manifolds. OP- have you actually tested fuel pressure or are we just making guesses about stuff right now?[/QUOTE no not tested fuel pressure myself nope, my unit runs fine. normally u can hear the fuel pump engage for around 2 secs when ignition turns on. Last edited by diveplane; 01-15-2018 at 11:53 PM.