Engine Stalling?

is it setting a check engine light? do you have access to a scan tool? Idle air control may be sticking or a throttle position sensor maybe reading wrong. This guide can help

https://www.2carpros.com/articles/engine-stalls

Please run down this guide and report back.

[quote:3c56a97e19="rhall77"]is it setting a check engine light? do you have access to a scan tool? Idle air control may be sticking or a throttle position sensor maybe reading wrong.[/quote:3c56a97e19]



Thank You for your advice! From Jacook

I donot have a scan tool, and my check engine light is not on.

check and see if you have any vacuum leaks, if that is ok, then i would suggest having the pcm scanned and see if the sensors are in range.

[quote:4f6499c115="rhall77"]check and see if you have any vacuum leaks, if that is ok, then i would suggest having the pcm scanned and see if the sensors are in range.[/quote:4f6499c115]



Okay> Thank you so very much, glad to get your advice.

1992 Chevy Silverado 2500 with 350 engine stalls when put into a selected gear. In park or neutral the engine idles fine. What could be the problem?

Have you checked fir vaacuum leaks? Has the check engine light come on?

No engine light warning. Changed the idle sensor and the engine worked for a couple minutes when put into a selected gear, but then it went back to its old habits.

What about vacuum leaks?

No I did not check vacuum leaks. I would have to figure that out.

It isn't hard. If you need some ideas, let me know.
Joe

1992 chevy S10 just put a new battery in it, now it starts but wont keep running. any ideas? just bought it for my son 2 days ago. ran FINE before the battery replace.

It needs to relearn its target idle speed thru the idle air control valve-disconnecting battery causes the computer to lose its programmed memories-

+
how do i re program it?

Any time the battery is disconnected, the programmed position of the IAC valve pintle is lost, and replaced with a "default" value. To return the IAC valve pintle to the correct position, perform the following procedure:
NOTE:This procedure, called the "quick-learn" Idle Learn procedure, utilized the capabilities of the Tech 1 "Scan" tool. For the procedure to work properly, the vehicle transaxle must be in Park or Neutral.

Restore battery power and place transaxle in Park or Neutral. Connect Tech 1, "Scan" tool. Select "IAC" System," then select "Idle Learn" in the "Misc. Test" mode.
Proceed with idle learn as directed.
This procedure allows the ECM memory to be updated with the correct pintle position for the vehicle, and provide a stable idle speed.

thanks SO much!

My truck will bog down and die when I shift from park to drive or to reverse. When I pull up to a stop sign or when I'm making a turn, it will bog down and turn off. Should I check the timing on it ? And/or, change the fuel filter? Or have the fuel pump checked ? Otherwise it still runs good on the road. Not misfiring or anything else.I just recently installed a new cap and rotor checked my wiring, it's all correct. NEEDS HELP.

I would start with checking fuel pump pressure. Here are the directions as to how. You will need a fuel pressure gauge. Most parts stores will lend or rent them to you.

https://www.2carpros.com/how_to/how_to_check_fuel_pressure.htm

Let me know what you find.

Joe

My husband replaced his radiator on his truck last night and after replacing the hoses and putting coolant the radiator and holding tank, it started up and ran fine. We drove it after it ran for 10 minutes, when about a mile down the road, his check gauges light came on and his oil pressure dropped to zero. We stopped at the gas station and found his truck leaking oil from one of the hoses attached to the radiator meant to cool the oil. So we drove it back home (less than one mile away) and it died just before our driveway. We added oil, thinking it would start, but no dice. It tries does try to turn over, which doesn't happen if the engine is seized (we had another vehicle blow a gasket a long time ago and it wouldn't even try to crank). Let me know if you need more info. I just need to know if our truck is done or can be saved.

this is kind of a hard one as some wil be ok others won't let it cool down make sure oil is full and see if it will turn over it may. It may take overnight to cool down enough though. if it turns over and you have pressure you are good. If pressure shows low or you hear clacking or a lot of ticking like from lifters then the engine will need to be rebuilt or truck junked whatever you choose.

my 1992 chevy silverado c3500 w/454 wont stay running just replaced alternator and battery both were bad. could it be the fuel pump. It starts at times then turns off after a few seconds. Help im new to trucks and american cars.

Do you have a check engine light on?

Check the fuel pressure if it's within specs to rule out a failing fuel pump.

so you got a 454! what are you used to driving?

I have a 1992 Chevy Silverado, and for about two months while changing gears, the truck would just stall and sometimes cut off. I had that fixed by replacing the map sensor. Now, my truck will crank and start but after about two to three seconds, it dies, cut off completely. I had the fuel filter replaced and the same day it drove fine. The next morning, I went to crank it and it crank and started but again cut off after a few seconds. It seems to only be doing this in cold weather.

If I remember correctly, after the initial start-up, your fuel pump is switched on by the oil pressure sending unit. That is GM's method of stopping the pump if a fuel line is ruptured in a crash so it doesn't keep dumping fuel on the ground.

First check your oil level. Next, you should get a nice idle flare-up to 1500 rpm for a few seconds after start-up. That will insure oil pressure gets up right away. In colder weather, the oil is thicker and flows less easily. That idle flare-up becomes even more important.

Have your mechanic check the actual oil pressure at start-up when the engine is cold. If it gets up to normal right away, suspect the oil pressure sending unit.