99 Ford F-350. Triton v10 Truck will fire up and runs with a slight miss. Nothing major. When it warms up within 10 minutes or so it will buck really bad and eventually die within 30 seconds. Will not start up again unless it sits and cools down. I’ve done fuel pressure test and it’s around 35-40 psi and holds that pressure even when symthom appears.

Ned C Cook

• 3433 Answers
• Posted on Jun 14, 2009

SOURCE: I have a 1997 FORD E250 VAN 4.2 V6 RUNS GOOD ON

If your exhaust smells like sulpher and the exhaust coming out of the tail pipedoes not stop immediately after engine is turned off. Your catalyctic converter is restricted. Have chk'd by muffler shop

SOURCE: I have a 99 gmc sierra with 5.3 it takes about 7 seconds to start

Needs a valve adjustment. I assume its EFI, eliminating the possibility of the carb.

SOURCE: 1970 Chevy 350 in C30 truck dies when warm

You need to find oput what you loose when the truck shuts off, all you need is Air, Fuel , and spark to run one of the three are droppuig out when it stalls and will not run. Chech the carb for gas it sounds like you have a weak fuel pump.

Testimonial: "Great idea...I assumed that because the line was full of fuel when i checked the bronze filter element. Fast response, thanks!"

SOURCE: Fuel pressure intermittently drops causing sputter and die.

check for 12v constant at your fuel pump if you are not getting that replace your relay.
if you are getting 12 volts at your fuel pump the fuel pump is possible to run tuel it gets warm then shut down to a lower rpm I would then replace the fuel pump

Vincent G

• 2363 Answers
• Posted on Dec 03, 2009

SOURCE: p1689

Get a can of CRC Mass Air Flow sensor or Electronic Parts cleaner.

Disconnect the connector for the Injector Pump and clean out the contacts.

Use a small needle nose to PUSH the contacts into the connector.

Use the reset of the can to clean out other electrical connector.

Use OBDII scanner or disconnect negative battery cable to reset code.