down stream o2 is useless as only fronts trim fuel.,
for get down stream worry that last or next year or never.
only smog man needs working rear o2.s
low power has man cause,ever try fresh spark plugs.?
no p03xx codes then plugs will be ok (kinda but 24year old plugs.
that P017x code lean is truth. I bet
and is low fuel pressure,
bad FPR, they mostly dont last 24 years, PFR.
VIN X car engine 3.0L gas,.
fuel pressure spec is. 44..2, to 54.2.
3.9 still has that old distributor there, so add cap,rotor wire sets HV.
and spark plugs none of those cap on last 24 years ever so.
but no code p03xx so is lost power and is not misfiring
so FPR is next is set at 49 psi. calibrated in the factory and no vacuum there. it says filter and FPR are all in one.
step 6 fpr says
he fuel pressure filter/regulator assembly is located on the top of the fuel pump assembly. It is not necessary to remove the fuel pump to remove the pressure filter/regulator assembly. Matchmark the direction the hose fitting points. Unit must be reinstalled pointing in the same direction.
we test it to see if it fails. FPR at the rail and let the chip fall where they may. (reality)
