Gas tank pump?

DID TRY TO SUPPORT?

Perhaps it's a stuck carburetor float valve, bad fuel pump (if it has one) or clogged fuel filter.

Not symptoms of a pump. Sounds more like a bad idle air control valve. run some fuel system cleaned in it and run a full tank of gas to see if it changes.

Did you use the old fuel pump or was there one in the used fuel tank? If you did use the old fuel pump check your fuses and relays. If the used tank had a fuel pump already in it then the fuel pump may be bad.

changing the filter wont get rid of the bad gas ---need to drain tank of bad gas and also re-replace the fuel filter also check the plugs not damaged or plugged

sounds like bd fuel pressure regulator. it is supose to idle aound1,000

your fuel pump may be that cause, have some one turn da key while you listen for fuel pump by gas tank, no noise pump not working, then get a rubber mallet and has soon they open ingition switch hit gas tank pump may star working may not but you will kown per shure your pump is bad

The fuel pump will be located inside your gas tank which will require you to remove the straps and to drop the tank down... The filter depending on the car, will either be inside the fuel tank, or outside of it near the front of the tank.

Other issues that may cause bad idling would be a bad TPS or EGR

Try to adjust the idle of the truck because there is a possibility the idle is low and if still not work put the gear in neutral and then start it and step on the gas pedals for 20 sec.

I’m happy to assist further over the phone at https://www.6ya.com/expert/ramy_d9e7ebea3891f482

The po136 code is a bad 02 sensor, on cylinder bank #1
sensor #2, which is the downstream one. needs new one.