code 45

  1. T

    Issues with rebuilt 350; idle screw, stalling, running poorly, code 45

    Long story long, had a mechanic rebuild the 5.7L/700R4 in my '89 C1500. Been a year and the head gaskets have blown twice (which he redid), once making a pair of heads not usable (according to him). The lifters have needed constant adjustment, they never stay quiet and it affects the engine's...
  2. kzvwrld

    Project Sierra; Codes 33 & 45?

    About two months ago i bought a $1500 94 Sierra off marketplace, and finally decided to tackle the service engine light. Its been throwing codes 33 and 45 ever since I bought it. Started with the basics (cap and rotor, plugs and wires, fuel filter) along with a new battery, alternator and...
  3. J

    93 GMC K1500 Code 45

    Hi everyone, I have a 1993 GMC K1500 I bought with 160k miles a little while back, and it has an issue I have been totally unable to fix. My mechanical knowledge is pretty limited, but I figured this would be a good car to learn on. When I first bought it, it would randomly stall at idle every...
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