1994 chevy s10 blazer 4.3l cpi runnin like crap

[myers47371]

if i let it sit an idle to warm up 10-15 minutes and then try to take off it runs really rough hesitates and doesnt wanna go . but if i just get in and take off with out letting it warm up its ok but the longer it runs the worse it gets. i have replaced plugs,plug wires,cap,rotator,distributor,cpi,tps, with no help. my engine light has never came on during any of this . anyone have any ideas where to turn next?

[old_master]

What is the fuel pressure and does it hold?

[myers47371]

Originally Posted by old_master

What is the fuel pressure and does it hold?

yes it holds at 60 i just had it put on a scanner it read the oxygen sensor was bad i just went and bought one replaced it and it didnt work either still runs the same

[old_master]

There are no DTC's that ever tell you to replace a part, it tells you what circuit has a problem. What was the DTC?

[myers47371]

Originally Posted by old_master

There are no DTC's that ever tell you to replace a part, it tells you what circuit has a problem. What was the DTC?

its a snapon scanner.

[myers47371]

Originally Posted by myers47371

its a snapon scanner.

what do u mean dtc ?

[old_master]

Diagnostic Trouble Code (DTC)

[myers47371]

Originally Posted by old_master

Diagnostic Trouble Code (DTC)

there was no trouble the o2 read in range from 70 to 8 or nine hundred . running rish to lean all the time more rich when idle and more lean at driving . trying to find a computer out of a junk yard to try and see if that is the prob .#16196395 . the o2 was the only thing that was not normal he said .

[myers47371]

Originally Posted by myers47371

there was no trouble the o2 read in range from 70 to 8 or nine hundred . running rish to lean all the time more rich when idle and more lean at driving . trying to find a computer out of a junk yard to try and see if that is the prob .#16196395 . the o2 was the only thing that was not normal he said .

i finely got my blazer fixed it was the cpi line kit.