I have a 97 ford taurus and I have replaced every possible sensor that you can think of as well as the alternator and the cam position sensor and the snythanizor,crank sensor, fuel pump and filter,...
'hard to crank', meaning it is hard to start, or it cranks slowly? If it cranks slowly, your starter is probably going south-if you mean it is still hard to get it started, it sounds like you did all the repairs on the ignition side but have not addressed the fuel side-check the fuel pump pressure at the rail on top of the engine, replace the fuel filter. If it is just hard to start when it is warm, you could have a leaking injector (s), or the fuel pump is losing pressure as it gets hot, or your fuel regulator is defective (you could tell this by doing a fuel pressure test).
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