Hard start when engine is warm

SOURCE: noise when engine is warm and driving

4 or 6 cylinder? 4cyl. it is probably the t- belt slapping or one of the driven by belt items on the motor.

SOURCE: 92 mitsubishi libero, engine surges downward in cold

DIFFICULT STARTING CAR IN COLD.WOULD BE A THERMO - TIME SWITCH.THE THERMO TIME SWITCH CONTROLS THE AMOUNT OF TIME THE COLD START VALVE IS HELD OPEN BY MEASURING THE COOLANT TEMPERATURE AND UTILIZING A TIME FUNCTION TO PREVENT AN OVER RICH CONDITION.THIS COULD BE MOST OF YOUR PROBLEM.BUT SCAN IT TO SEE WHAT PCM CODE YOU ARE GETTING.

SOURCE: 1989 jeep wrangler starts jumping and backfiring

Start with the basics...meaning check the spark plug wires and spark plugs. While under the hood, inspect all hoses for a vacuum leak(s). Then turn the ignition key on-off-on-off- on...leave in the on position and write down the number of flashes the check engine light indicates....2 flashes = #2....pause.....3 flashes = #3.
Let start from here. Are you able to perform engine repairs or diagnostics???

SOURCE: hard to start after being warm

is the coolant temperature sensor ok?

does it start if you hold your accelerator pedal all the way to the floor when starting?

SOURCE: my 99 gmc 454 starts

do u mean hard to turn over or fire engine