Chevy 350 Problem

Ok so i posted on here the other day about my 88 Chevy 2500 2wd throttle body fuel injected, that will die when the brakes are applied, but will start right back up. Several suggested to pull the vacuum line out and cap it. So i tried that and still does the same thing. Others suggested a short in the wiring to the tail lights but i thought about that and it doesnt die when i apply the brakes just sitting still it only does it when you hit the brakes when your slowing down. Im sorda lost on what else it could be if you guys can think of any more suggestion it would be much appreciated.

COULD be a break in the wiring harness that opens when it gets flexed a certain way under braking conditions or even a bad ground between the battery, engine, frame, body, and 'puter.

Check your battery cables! GM cables are bad about corroding back under the molded on rubber ends at the battery. A freinds truck would die every time he hit a bump in the road so I replaced the battery cable ends and cured it. I cut the rubber boots open on the end of the cables after cutting them off and they where full of corrosion. Dave

Automatic?
Converter lockup not disengaging?
Buck like a stick shift and stall the motor?
Had a Monte Carlo do that years ago, and it turned out to be the solenoid in the trans oil pan.

Maybe the fuel pump. My 95 started doing what yours is last saturday and today the fuel pump is dead.

Well, I haven't personally experienced that problem but I have heard that it could be a worn ignition switch where your keys are swinging especially when braking. Try with just one key and see what happens.

Ya its an automatic. and no it doesnt buck or stall it just dies and will fire right back up and run 70 mph but as soon as you break hard it will die again sorda drawing a blank dont know what else it could be.

I think Bob below has the answer. With it running, wiggle al wires and harnesses in the direction of decelleration. It might be either fuel or ignition, so wiggle all wiring systems. (I bet a connector is corroded and pulling apart during stops. Putting a volt meter on the ignitor voltage lead, and placing the meter so you can see it might let you know if it is IGN or Fuel. Jim

Couple of times in past have seen heavy key ring ruin ignition causing those proplems.

does it die only when coming to a stop or does it die if you keep rolling?? if it dies only when coming to a complete stop the torque converter may not be unlocking?? Paul

I put a cheap replacement gas tank in my 87 fuel injected chevy once, it didn"t have a baffle in it. When the tank would get half empty and you would come up to a stop sign or go down hill and hit the brakes she would suck air and the engine would quit. Maybe you have an in tank fuel pickup problem? Pump came out of place, maybe swingin on the hose?? Maybe attach a fuel pressure gauge and drive around and see if it is fuel related.

I don't know if this will be any help at all, but I had a Jeep Grand Cherokee once that would die whenever I turned left, only when I turned left, and only if I had some speed. The only code the computer had was something like "computer started". Very perplexing! I finally figured out that the wiring going to the transmission was run over the transmission in the wrong place and it was getting pinched between the body and the transmission. It only started to act up when the motor mounts got loose enough with age to shift the transmission to pinch it. Unplugged the wiring harness from the transmission and ran it over where it was supposed to go and all was well. Good thing I don't charge myself for labor because I sure spent a lot of time figuring that out!

Old man of mine had a 79 dodge 360 with fulltime 4wd and it did that, the only way to keep it running when slowing down was to put one foot on the gas and the other on the brake. All that needed done was to turn the distibutor so it would run a little smoother. I don't know if that is it! Good luck with it, almost makes a preacher cuss, I was hauling hay from one farm to the other with my 94 chevy 6.5 turbo diesel with a slip o matic, then went to go to work the next morning and it would not get out of low gear, so I stopped a couple miles down the road and checked the fluid which was full, drove to a gas station stopped the engine, filled with fuel, looked at the motor for vaccum leaks, got under the truck looking to see what was wrong, could not find anything wrong, jumped back in going to take it back home and trade it for the wifes car, started it up and down the road with no problems. Just the shifting selinoid and it needed time to think! I was late for work, and dirty. Took a week to get the truck to stop doing that. Just thought I would throw that in there, made me feel silly looking at my truck at a gas station, just to find nothing wrong. good luck to you!
Tom