TRUCK BATTERY DIES,STARTS WHEN JUMPED BUT WONT STAY RUNNING WITHOUT FOOT ON GAS

SOURCE: !999 Ford Ranger

It could be the mass air flow sensor. Its mounted to the side of the air cleaner. Just unplug the electrical connection to bypass the unit. If this is the problem the vehicle should run smoothly.

SOURCE: car wont stay running unless foot is on the gas

Withoutknowing if the check engine light is on it could be a variety of things including but not limited to the o2 sensor, throttle positioning sensor, and the MAF and MAP sensors. Best diagnosed by using an OBDII scanner to scan for codes. If no codes are present I would then check for the pressure coming from the fuel pump to make sure it is still functioning.

SOURCE: 2003 Camry won't stay idling after I changed battery

This is extremely common :)

With time your throttle body gets gummed up with oily residue from the PCV system. As this happens, the computer adapts to the restriction it causes in the throttle body.
When you unhook the battery, these learned values are lost and the default settings for idle control are used. Unfortunately the default settings are no longer sufficient to keep the idle correct with it all gummed up.

Take your intake hoses off the throttle bodies and clean the insides (open the throttle plates for better access) with a rag and some brake parts cleaner or throttle plate cleaner, available from your local parts store.

Reassemble and start the car, your idle problems should be gone immediately.

I

SOURCE: From red light truck started sputtering and and stalled out

Hello. The GMC Sierra has an electric fuel pump so you should ensure that its fuses and relays are working before checking it. You may need to clean your fuel pump or replace it if your gas tank is not empty, but your vehicle has difficulty getting fuel. The GMC Sierra comes in a variety of styles and trim levels that can affect the replacement fuel pump you choose.

SOURCE: STARTS BUT WONT STAY ON WITHOUT KEEPING MY FOOT ON

Change your fuel filter and run some fuel injector cleaner through the gas tank. Take your air intake hose off the throttle body and spray some carb cleaner and get all of the black gunk out of the inside of your throttle body. Change your spark plugs, spark plug wires, oxygen sensor, distributor cap and rotor. Have your ignition timing set, the correct setting for your 1994 Isuzu pickup is: 6 Degrees

http://www.autozone.com/autozone/repairinfo/specifications/specificationsMain.jsp?childCatName=Ignition+Timing&childCatId=26200243&categoryNValue=26299999&categoryNameForTitle=Ignition+(Tune+Up)&categoryName=IGNITION+(TUNE+UP)&childCategoryNameForTitle=Ignition+Timing#