tpricez71
TYF Newbie
help. have fuel problems i think. gm books say tahoe should have 61-66 psi with key on. also pressure should hold for about 5 minutes after key off. i get 57 key on. as soon as pump stops pressure drops quickly. i replaced the regulator about a month ago, and fuel pump a week ago. the reason i noticed this is the truck keeps setting a 0171 and 0174 lean code. where do i go from here. i have been told the spider assembly if it goes bad usually runs rich, im stumped. i read the short and long fuel trims with my scanner.. stft was +7% bank 1 +10% bank 2 long was +25% and +26%. has any one had to fix any problems like this? I dont know where to go from here.
