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Re: '89 Chevy Trouble Codes 32,34,45
Havn't had much time to work on the truck lately. I did rechecked the hoses and everything is fine. I remember that the first time the light came on was on the first drive after the headers. I think we're getting somewhere when you mention back pressure. The truck has free flowing catalyic and an unrestricted race muffler. I'm going to install the stock set up and see what happens. I'll start searching for the heated O2. Thanks
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