Dies after starting

[Tazman]

Just recently my truck has started dieing after starting.It only occurs when it is warm,such as a 15 mile drive shut off start again in twenty minutes.It will only stay running if I step on the gas.Usually I do not even touch the gas when starting.Any ideas?Thanks

[burbboysgc]

 What engine? Fuel injected or carb? Have you tried tune up,fuel filter,plugs wires ect.?

[Irish_Alley]

Sounds electrical. Coil gets hot shuts down till it cools then it will start the cycle all over doesn't have to be the coil just saying its a possibility like the control module or pickup coil most time its the ignition coil or ignition control module in my time working on my trucks

[topp]

If it's TBI could be the Fuel Pump

[Tazman]

It is the stock 350 with TBI.Thanks

[topp]

To test the pump, you need to have 10-15 lbs of pressure at the tbi unit.

Also, could be Ignition module and/or pick-up coil.

[Irish_Alley]

The problem with testing these things is they most the time have to be hot cause that's when they will have the problem

[Tazman]

I will start with the coil ,hopefully that will be it.I do not feel like dropping the tank.Thanks

[topp]

I would not just throw parts at it.

Come up with a plan...

Make it die, then check for spark.  If there is then it isn't th coil...
If no spark, it could be one of several things, and the coil is prolly good.
Could be Pick/up coil or Ignition Module...or both....
Could be pressure regulator in the TBI unit.
Could be clogged fuel filter....


Throwing parts at it is a waste of money, with an occasional "its fixed" in between a few hundred dollars....

[screamin86]

I've had that problem a few times and every time it was the igniton control modual.

[Irish_Alley]

the coil and icm can be tested at a parts store i know autozone does it . but again it has to be hot sometimes the icm will pass but if its tested a couple times in a row it will fail

[Tazman]

I replaced the Ignition Control Mod,and it still dies at starting after hot.I plan to check the fuel pressure next.I appreciate all the help.Thanks

[VileZambonie]

Don't throw parts at it.

It will restart if you depress the accelerator?

[Tazman]

Yes it does.

[VileZambonie]

So unless you depress the accelerator it's a crank no start.

Two most likely causes,

1) TPS Voltage is higher than 2.5 Volts putting it in clear flood mode.

2) Fuel pump relay or hot start module faulty, oil pressure switch is completing the circuit

Got a paper clip and a digital volt meter?