Problem with my 1998 Chevy Blazer
4.3 V6
Repair work done prior = replaced intake gaskets
tip/donation yes
GM tech = JK
question = I recently replaced intake gaskets and all gaskets with intake (throttle
body, distributor, upper and lower intake). When I started the Blazer idle was fine,
I revved the engine and still seemed fine. I went for a drive and after reaching
operating temperature the engine would not rev up. If you rev slowly you can rev
fine, if you rev fast will not take fuel and sounds like popping through air cleaner.
The check engine light came on and showed bank 1 and bank 2 O2 sensors low
voltage. Got any ideas?
May have gotten some debre on the sensors while doing the work.
Plug wires not in the correct firing order.
Vacuum leak.
May have left something unplugged or blew a fuse.
Low fuel pressure would also cause this.
Possible timing chain jumped time, or distributor not in exact same location as
previous.
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