I buy and flip cars all the time and I am used to them having check engine
lights and little issues but prepare myself to fix them before selling them on. But I bought this 1998 GT and it didn't pop a check engine light until after I had driven it for almost a week. It's a p1151 which is for the oxygen sensor circuit heat switch. I've read online and had a few mechanic friends tell me that is almost always a vacuum leak. In the process of flipping the car I've added some aftermarket parts to appeal to the new buyer but the check engine light came on before I started swapping parts over (mufflers, throttle body and intake, rear oxygen sensors) and I have replaced all the major hoses like coolant hoses and vacuum hoses around the intake. The only place I can find that would have any vacuum leak is the hose that goes to the EVAP purge sensor and it goes down into the passenger side fender. I have no clue how to get to this hose aside from taking the whole fender off lol. Has anybody worked on these rubber hoses or know what I can do to ditch this code?
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