1992 S-10 Blazer

[Pack1]

4.3L votex I replaced the 92 engine with a 1994 4.3L vortex and now I get a check engine light. When I run tests it said to check oxygen senser. I replaced the senser and the light keeps coming back and it will come on and then go off. The engine is starting to run rough and when I changed the plug: 1,3, and 5 had carbon, but the electrode were clean and the 2,4 & 6 were completely carboned and probably why it runs rough. Is there something missing on a 94 that the computer is looking for on the 92 or vice versa?

[jackass#1]

you had a 4.3vortec in the 92? was it tbi? try putting the cumputer from the 94 into your 92. check to see if your 94 requires more fuel pressure than the 92.

[DetroitMuscle]

If he had a vortec in it there wouldnt be TBI.


You need the 94 computer.