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  1. 262ci Forum (4.3)
    Hey, I have an 03 4.3 v6 with about 144,000 on it. About 8 months ago I had the head gaskets fixed and 1.5 years ago I had a tune. Since getting it back from the head gasket fix the idle has been “off” and down shifting has felt clunky and stutters. Yesterday I had a p0300 code get thrown. The...
  2. S10 / Sonoma
    I know this issue has been beaten like a dog but I am at my wits end. This site is extremely helpful so first let me say thanks to all who post. so, 2002 ZR2 4.3 was running mint then I got a P0304. Spark plug wire arcing out so I decided to do plugs, wire cap and rotor. 80,000 miles from...
  3. 262ci Forum (4.3)
    Ok so I have an 01 4x4 with a 4.3. I've been having a problem with a misfire under load/ at highway speed once it goes into overdrive. I know this has been addressed kinda on other threads but I haven't been able to find a situation exactly like mine. When this first started happening, my main...
  4. 262ci Forum (4.3)
    2000 S10 ZR2, I've been around the block several times trying to get this 4.3l to run well and I'm at my wit's end. Was running good last year and one day it had a rough start when moving it around to park on other side of the house. Fast forward a week later it started to hail and when I ran...
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