S10 blazer Engine dies after warming

[plugginaway]

1989 S10Blazer 4.3L 4X4 - engine starts easily runs smoothly until warm and then just shuts off as if key were turned off. Can be started giving full throttle and pumping - but will not idle - have replaced fuel filter - fuel pump (it was bad) & tune up including plugs, wires, rotor, rotor cap and coil

[bobcat5544]

1989 S10Blazer 4.3L 4X4 - engine starts easily runs smoothly until warm and then just shuts off as if key were turned off. Can be started giving full throttle and pumping - but will not idle - have replaced fuel filter - fuel pump (it was bad) & tune up including plugs, wires, rotor, rotor cap and coil

 

IT'S HARD TO SAY WHAT IT IS. THERE ARE MANY POSSIBILITIES. WITH IT CUTTING OUT WHEN WARM I WOULD LOOK AT THESE SENSORS. COOLENT TEMP SENSOR, IDLE AIR VALVE, IGNITION MODULE, AND OIL PRESSURE SENDER.

[90GMCZ71]

Make sure your MAP sensor holds a vacuum. Also check that the vacuum line between TBI and MAP can also hold a vacuum.

 

//90GMCZ71

[bobcat5544]

Make sure your MAP sensor holds a vacuum. Also check that the vacuum line between TBI and MAP can also hold a vacuum.

 

//90GMCZ71

 

THE MAP SENSOR WOULD NOT CAUSE THE PROBLEM HE IS HAVING.

[jimmy_chick93]

hey newb here

i own a 1993 gmc jimmy having similar problems

runs fine when cold then warms up and starts to heistate buck/bogg out and then quits and un-able to restart until cold again

i however was able to at first when symptoms began to start up giving throttle and kinda milking the gas a lil then catchin it and it would run fine after but symptoms got worse now no longer able to do so..

changed fuel filter getting 60 psi at fuel rail and all sensors fine no codes hooked up the snap on scanner to it everything seems to be runnning with good voltage etc... looking for pointers and leads on to what may be the problem

you may message me on here or feel free to message me on email

[email protected]

thank you