i replaced the map and took a tbi off my van witch runs fine and put it all on my blazer no change now every sencer is new no vac. leaks good on the gas side of things all grounds good new ecm what the hell could make her cout out so bad after worm up ooo yea timing @ 0 with wire un pluged and the egr is not it help me please

 

At this point, you should dig into the wiring. The sensors could be perfectly fine, but if the wiring isn't allowing them to properly communicate with the ECU, it will act just the same as if the sensor were bad.

 

Check for bad ground on the CTS wire harness; clean up the manifold and ring terminal with sandpaper. Then check the rest of the wire bundle =).

 

well i took the oile cap off to day and found wite oil onder the cap now im thinking head gasket strange symtoms thou but the intake gasket was just replased so im puling it and rebulding

 

pull your dipstick before you condemn the heads gaskets, that white oil on the fill cap can just be caused by condensation.

 

Yeah I consistently get that yellow/white paste on my oil cap. Compression check isn't too troubling and I haven't been loosing coolant, so I just wipe it off and cross my fingers. My oil doesn't look milky when I change it, either.

swartlkk's probably right; wiring. I'd guess a broken sensor wire inside the insulation or maybe bad ground.

 

i am having thi9s exact problem.. started 2 days ago and now it will barely run. i just drove my girlfriend to work and could not go over 20 mph.. and i almost didnt make it up a very small hill.. Seems like the choke is on

 

I have been throu all the wires on hood and in the dash very time comsumming job all sencers good i have a doner van that runs good i swoped all sencers out and no change the dip oil is black I have seen a little water drop on it but i think thats condashion the milky cap this is the first time I have seen this on my cap and I have had the truck for 4 years the onley thing I think it could be is the ful sending unit and I have herd them cause problems but I just dont know. so if I rebuld the 350 I will have all new in and out. I have all reddy replaced the rod bearings and oil pump and im shoure the manes need replaced to and a rebuld on a 350 is a no braner to do.

 

Check the fuel pump relay. Mine acted up after it got hot.

 

tgats kinda funny cuz i was thinking that this morning and replaced it and no change