Idle and stalling problem can't figure out

[TJCrowd]

I have a 92 Chevy S10 Blazer. A few weeks ago it started stalling in idle, and has gotten worse. Now it stalls in idle and then when I try to turn it back on it will crank but won't start. When I turn the key to the on position, I can hear the fuel pump turn on. There is no check engine light and not giving any trouble codes besides 12 (everything is fine). Here is what I have done:

- replaced the MAP sensor
- replaced the throttle position sensor
- replaced the PCV valve
- replaced the fuel filter
- inspected all vacuum hoses, which are fine

I'm at a loss of what it could be. The next thing I was going to try is replacing the idle air control valve, but am not sure that will help.

Any help or advice would be greatly appreciated.

Thank you!

[jerryg2112]

I'd check the fuel pressure to see if your getting enough. I'd also check for spark when it stalls and won't start again. Do you have a distributor, wires? How are they?

[TJCrowd]

Thank you so much for the response. I have not yet checked the fuel pressure, will try that tonight.

[TJCrowd]

Finally able to check the fuel pressure. 52 with engine on and off, no change. It didn't bleed off when it eventually died and when I turned the key to the off position.good regulator, bad fuel pump?

[la1]

when it stalls squirt some sensor safe throttle body cleaner in, see if it will start, if it starts it is something with your fueling. does that have TBI ?

[TJCrowd]

Thank you so much for the help.

It was the fuel pressure regulator. I was able to change it out and it is back to running as normal.

[Thomas Sams]

Dude its good that you are owner of the 92 Chevy S10 because in these days i think its impossible that to purchased the chev if its not start then must battery is out of order because current is not circulate in the wire..