will not stay running

[stelasista1]

problem still exsists. I had a different post about "blazer chugging". I have a few new questions. does anyone have a diagram for vac hoses on this 93 s10, 4.3, cpi? I am leaning towards a vac leak somewhere, maybe not, but at this point I am out of answers. I have replaced the cpi, nut kit, amoung other things. The fuel tank, sender, screen, and pump are about a year old. The truck starts up, when cold will run for a couple minutes, then start idling ruff, the comp seems to act like its making up for the ruff idle, and something trys to keep it running, no avail, it shuts down. You can start it right back up, but it will shut down again. I don't know where to check next. I might add there are no codes coming up. filter is new, tps, wires, plugs, maf sensor, iac, cap, rotor, wires, plugs, coil. any suggestions, thank you for your help.

[samton]

Originally Posted by stelasista1

problem still exsists. I had a different post about "blazer chugging". I have a few new questions. does anyone have a diagram for vac hoses on this 93 s10, 4.3, cpi? I am leaning towards a vac leak somewhere, maybe not, but at this point I am out of answers. I have replaced the cpi, nut kit, amoung other things. The fuel tank, sender, screen, and pump are about a year old. The truck starts up, when cold will run for a couple minutes, then start idling ruff, the comp seems to act like its making up for the ruff idle, and something trys to keep it running, no avail, it shuts down. You can start it right back up, but it will shut down again. I don't know where to check next. I might add there are no codes coming up. filter is new, tps, wires, plugs, maf sensor, iac, cap, rotor, wires, plugs, coil. any suggestions, thank you for your help.

mone did the same thing changed out everything still did it...all it was was a stuck thermostate....

[stelasista1]

I will check that. Thank you. Today I started it up and it ran fine for a few minutes, then the same thing. I tried to give it a little rpm's and the thing backfired so loud, blew the muffler in half. Had several pieces of carbon on the ground, I think some of the cat too. Looks honeycomb anyway. Also pulled the new plugs that were put in a couple days ago, they are so black, now I will clean them once again and see if that helps anything. Thanks for giving me something else to check. ha, ha

[BlazerLT]

honeycomb is the cat.

Replace the cat.