Engine won't stay running, stalls while driving?

What a great post the throttle bore guide helped me fix the problem at no cost lol I love this site.

Truck ran really good til about a month ago. It started to hesitate a little within a week it got worse. Then it just stalled and I had to have it towed home. I changed the gas filter and found my coil wire was bad. So I replaced that and it seemed fine. Coming home from work it started to sputter and stalled and wouldn't start. So I had it towed again. Yesterday I replaced the fuel pump but it will not stay running. It will run then wants to stall then it catches then wants to stall. And now when it runs there is a knocking sound like it's out of oil but it's full. It's a 4.3 w/90,000 mi. Thanks

I try to start my truck and it sounds good for 2 or 3 seconds and it just dies I thought it might be fuel but I put a new fuel pump on it and new relay and it didn't help then I heard it might be a mass air flow sensor so I changed it and it is still doing the same thing I'm not sure what else to try

I have a 2003 Chevy Silverado 1500 5.3 8Cyl automatic w/ 4wd. I am having problems keeping the motor running. It will start (sometimes) then die randomly even with the throttle fully engaged. It will sputter a little then die. It has fuel, is getting fuel to the injectors.

Alternator problems prior, general clean bill of health, maintained well with regular oil changes at 3000 miles, recent oil change trans fluid and filter change.

This site is great! :-)

Chevy silverado 2003
is stalling when letting off of the gas to stop or slow down.

Idles fine, plugs and filters are good. Check engine light has been on for a year but it is because of a upgraded muffler system. Battery did die this weekend because we were playing the radio.

After battery died jumped and truck started fine. The next day is when the stalling started. We did drive 350 miles yesterday on the interstate it was fine but when pulling off on the exit it would stall. So then I put it in to neutral when slowing down and it would not stall then.

My truck will start fine and run fine until it warms up. Once it is warm it will shut off if I let off the gas in turns and at stop lights. It will start fine after that but will still stall with no rpm's. I have replaced the battery. The alternator was tested and was fine. I have found that the top radiator hose is warm but the bottom is ice cold. Thermostat maybe?

My pick-up doesn't start right away. If I give the key a turn and then another quick turn it will start up no problem. If the engine is warm it starts right up. Also it shuts off sometimes when I slow down quickly or make a sharp but slow turn but it will start right back up. What does this sound like? Thank you very much.

Engine Performance problem
2003 Chevy Silverado V8 Four Wheel Drive Automatic

I have a 2003 silverado. Yesterday getting on the hi-way, my pick up studdered and then stalled. I started it again and it was barely staying running then died again. Engine lite did come on. Any ideas on what it could be.

Hello, first, just to specify, my truck is a 6.0L extended cab long bed truck.

Now, this is what I changed before the problem started. Recently, I found that some wires in my truck were being smashed and, in turn, shorted against the firewall by the interior e-brake pedal arm. So, I disconnected the battery to solder the 3 wires back together. I clipped the corroded/broken parts off before soldering, then I heatshrinked them and wrapped them with foam and duct tape. The three wires are purple, orange, and yellow. The yellow one is either 18 or 22 gauge, while the others are around 14 gauge. They go into a connector on the fuse panel under the dashboard which is labeled as "12-way body" in the manual. I reconnected the battery and started the truck, no probs.

Now to the problem. The next day, driving to work, the truck died at my first stop (no check lights). After that I started paying attention to the tach and voltmeter. Only at stops, the tach drops from 750 rpm to about 600, then bounces between 250 and 600. No weird noises, besides the fact that the engine sounds like its dieing. Watching the voltmeter, it drops from just above 14 (normal) to about 10-12v. So far, since this started, my truck has only died 2 times. So, most of the time the engine recovers and goes back to normal idle. I figured out this morning that the lulling/shuddering/low rpms/trying to die is most easily replicated by shifting gears. Every move of the shifter causes temporary lulling/shuddering/low rpms then it goes back to normal idle. The symptoms last for 5-10 seconds after the tranny is done shifting. Still not one check light. Also, this is ONLY during braking/stop.

Right now, I’m just trying to find out the problem maker. I’d like to narrow it down as far as possible by spending the least amount of money because it’s going to be for sale real soon and I have no idea where to start. Please help! Thanks!

Drew