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Username Post: New guy with engine mystery        (Topic#366648)
Joe Dirte 
Posts: 1

Reg: 10-09-21
10-09-21 01:01 PM - Post#2828877    

1998 k1500. 350. Have a weird shake at about 1700 rpm. Only codes I'd get were low readings on o2s. Fuel pump was only pushin bout 50psi. Just swapped that out today but of course I can't find my scanner to check the sensors readings. This has been an ongoing issue since I got the truck running. No misfires, no leaks, no other codes than low readings on o2s.

Edited by Joe Dirte on 10-09-21 01:02 PM. Reason for edit: No reason given.

Frequent Contributor
Posts: 2367

Loc: Lake George, NY
Reg: 11-11-15
10-10-21 04:19 PM - Post#2828933    
    In response to Joe Dirte

If this a Vortec that fuel pressure is too low. Should be about 62 psi. Check the specs for your engine, that could skew your o2 readings.

Edited by Shepherd on 10-10-21 04:20 PM. Reason for edit: No reason given.

Super Senior Member
Posts: 5902

Loc: paradise
Reg: 09-05-03
10-12-21 07:48 PM - Post#2829057    
    In response to Joe Dirte

uh, is that in park? welcome to ct.

70 L camino, grampa engine, g-force 5 spd, road rage suspension. Pray first before all else fails.

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