Hello, all. 1989 S-10 Blazer 4WD, originally a 4.3 engine but prior owner replaced it with a 2.8. Have had car 6 years now. Awoke one morning, and car having very serious idle and hesitation problems when driving, so bad I could not drive it. Wanted to stall out going up hills. Spark plugs and wires not replaced for a while, so I changed those out, but no luck. A few days later, I found a bad vacuum leak, changed hose, and that smoothed car out better, but still experiencing rough idle in drive and hesitation when driving, though not as bad as before. Cleaned EGR to no effect. No codes. Ran gas line cleaner, new tank of gas, no change.

Any helpful hints?

 

Well, OK, I have a Code 32, EGR.