so here is the basic breakdown. when i start my truck(98 taco 2rz) when the engine is cool, the engine bogs out like it is stalling. if i just let it go, the truck will stall out. if i feed it, i can give it enough gas to keep it going enough to let it warm a bit. ill have to hit the accellerator about 3-4 pumps to keep it from stalling before i can let my truck idle and warm up without dying. when the truck is straining, it affects the whole elec system as well. all of my electrical will dim as the truck chokes. if i have been driving already and my engine is warm, this wont happen when i start the truck again. i have heard that maybe the problem is the temperature sensor. i have also heard that it may be a certain exhaust valve(sorry i cant remember the name right now), in which case the repair would cost about the same as putting on new headers. any help or recommendations would be very welcome. any ever had this problem before as well?

 

unplug the vacuum line from your EGR valve and then install a plug into the end of the vacuum line. Your EGR valve might be dirty and causing it to stick open.

Other than that, check for fuel and for spark and see if you have any delivery issues.

 

im reading my chilton right now on the egr. any suggestions from others? may as well check any possibility once i pop the hood...

 

I'd have your battery and alternator completely tested. If you're not getting the proper voltage and amps to your electrical system, the ECM, the fuel pump, all the sensors, etc, the truck may want to die due to lack of electrical power in the system.

I know when my wife's Camaro had an alternator go out, I could jump start the car and get it to run, but once she hit the brakes, or turn on any accessories, the car would want to die due to lack of electrical power needed to feed all of the car's fuel and ignition components. The alternator wasn't charging the battery which held all of that electrical power needed to keep the car running.

 

Consider cleaning your Idle Air Control Valve...they get dirty/gummy and can complicate your idle.

 

i just replaced the alternator about 2 months ago. hopefully it isnt something in the electrical...