Changed the head in a 2000 chevy venture as soon as van starts low oil presure light comes on. Did oil change and put in new oil pump still low oil light on. Help

Oil level? Last time serviced? Oil filter changed? Number of miles? Regular service as required by Owner's manual? Otherwise if none of these are a problem, you may have a failed or failing oil pump. Worst case is bearing problem.

Two things I can think of. did you prime the new oil pump?. If so the oil pump by pass valve may be stuck open.

if oil level is ok, your oil PRESSURE is dangerously low.
Either the wrong oil was used, or your oil pump is going bad.

Ill bet on wrong oil since you just had it changed,

pump gas pedal three times once you have turn the key to on position before starting.

check to make sure the security light is not on if it is the van will have spark but no injecter pulse the best way to solve this issue is to have the original igniton key and put it in the igniton in the run position and leave it on for 10 minutes then the light will flash then try to start the van

check your ground for the fuel pump relay 1st-next see what the voltage is supposed to be and what you are actually dealing. I doubt the computer sends voltage to the relay if it is even controlled by the computer it is going to be controlled by ground. Most likley the supply voltage comes from the ignition switch or a power relay. Need to test the basics before putting too many parts in it.

I have over 300k miles on my 2000 Venture. When the lights start flickering at low RPM's, the alternator or battery might be going bad. I would have it tested (for free) at the local AutoZone or Napa. The alternator SHOULD last 80-150,000+ miles. Its a real pain to change out on the Venture vans.

Sometimes I wonder if the van just doesn't create enough juice to run all of the accessories since even when batery and alternator are new they flicker once in a while when a component turns on.

I get zapped year round by my cars, even in high humidity. It is not harmful, but be careful at gas stations!

2000 chevy venture run good but my lights flickers and have to jump. After I jump the van and put my meeter on the battery its reading 14.volts at idle. I can drive around to store cut the van off come out it starts fine leave it overnite and it don't started.

Hi , this can be caused by a bad, tps (trottle position sensor)also can check fuel presure and fuel filter,good luck.......