86 Chevy Blazer Circuits

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  #1  
Old 03-29-03, 09:22 PM
SockMonkey
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Question 86 Chevy Blazer Circuits

hi there fellas.

my '86 automoatic chevy blazer has started started giving me trouble. it's making a noise like it's mis-firing or something and a lovely knocking noise comes from under the hood. my diagnostics say that it's the speed cencor circuit and the barometric pressure circuit. i went out and bought a manual (chilton) for the darn thing but it doesn't tell me where they are....
i just put on new plugs, wires, oil filter, belts, and an air filter.
i'd be grateful for any help i could get.
thanks!
 
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  #2  
Old 03-30-03, 05:56 AM
Joe_F
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Which Blazer and which engine size? Full size or S10?

The knocking if heavy and repeated could be signs of internal engine failure. Check the oil pressure first with a reliable hand held gauge (Autozone can rent you one).

If poor engine oil pressure is found, stop here--the engine is shot and has to be replaced or rebuilt.
 
  #3  
Old 03-30-03, 01:59 PM
SockMonkey
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it's an s-10. thanks for the idea...i'll call autozone and see if they have something for me.
 
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