My '94 chevy c1500 will start but wont stay running with out pressing on peddle. I have replaced fuel filter, icm and fuel pump is working. I just bought this a couple of months ago so im really ticked about it breaking down already!! Any help would be wonderful!!!

Possible bad or carboned up egr, idle air control, tps out of whack, all these things need to be checked and possibly a full scan.

thanks I'll check on all that.

sorry its taken so long to respond, hurt my back and havnt been able to do much but I did check on all those things that you suggested and it wasnt any of them. If you got any other suggestions that would be great!

I have a 98 305 cheyenne that I just put a new engine in. I have trouble with it starting. Once you get it started and take it down the road it will shut down 2 or 3 times within a half mile and then has a hard time starting again. checked fuel pressure, timing, changed all plugs and wires, new distributor and also changed ground strap.
I am also stuck with this one and very aggravated.
Anyone have any suggestions?
:banghead:

I have an 88 Cheyenne. As a previous post indicated check the IAC value for carbon buildup as well as the EGR value for carbon build-up. On my truck both of these were carboned up badly, although I have an excess of 140,000 miles on it. However I would check the simple stuff first, Spark plugs, air filter, gas filter etc.

Ever since my son took it out muddin its been giving me problems. I'm about to give up on it!

Ever since my son took it out muddin its been giving me problems.

now theres a clue..lol, check wiring under the vehicle especially the O2 sensor

Well I finally got the truck running, after months of trying to figure out what was wrong, I went ahead and took it to a mechanic. He said my distributor was bad and the starter was going out. So I took the truck home and fixed all that and also replaced the battery because it wasnt holding a charge. So far, running great (knock on wood)! Before taking it to the mechanic I had replaced the IAC, EIC, Fuel pump and throttle body gasket.