1992 GMC Safari Van 4.3 V-6 Engine

Firing order, 1 6 5 4 3 2, 4.3L engine. The cylinder banks are odd and even numbered. driver side bank, from front to back, 1 3 5
passenger side bank, 2 4 6, front to back. Hope you can read compression spec. 100 psi min.

Sounds like throttle body and/or its components,"IAC motor-IdleAirControl motor, TPS-ThrottlePositionSensor. Throttle body/Carb cleaner and SeaFoam @the brake booster.

The ground should connect to the motor and the motor should connect to the body or chassis. Pour some water on the connection to the engine and the battery terminals. If it is a bad connection things should improve. If you jump start, the donor vehicle needs to be running at a fast idle.

Here is the diagram

Engine stall or RPM fluctuates at idle.

This problem is commonly caused by a dirty automatic idle speed control valve and throttle valve. Buy a can of throttle valve cleaner (do not use carburetor spray cleaner!) from NAPA or Carquest (made by CRC chemicals) and spray it into the air intake while the engine is running, use up about 1/2 the can, engine will try to stall hold the speed up, shut it down and let it soak for 30 minutes, restart and blow out the remaining fluid, shut it down and disconnect the negative battery cable for 5 Min's to reset the base idle control

the heater core on a Safari/Astro van is higher then the radiator, to solve my probem, I installed a reverse flush kit form Prestone, then I was able to fill the entire cooling system.

If your van has the 4.3 v6 the starter in on the pass side at the transmission to engine split.

Answer to firing order

Firing order for 1992 chevy astro 4.3L, From front of engine driver's (left) side No.1, to right front, No.2. left side middle cyl. No.3. Right side mid. cyl. No.4. Rear cyl. left side, No.5. Rear rihgt No.6. On the Distributer cap from No.1 (should be marked) plug tower order is 1,6,5,4,3,2.


Read more: http://wiki.answers.com/Q/What_is_the_firing_order_for_a_1995_Chevy_Astro_4.3L#ixzz1OeLSDOuP

on each side of the ENGINE ACCESS PANELin your van you will see a large slotted screw head buy the fire wall one on each side

replace the fuel pressure regulator and the fuel filter, the pressure is low.