This is the first time in 4 years my beloved i30 refused to start. For the past month i have been having starting issues. It'll take longer for it to crank. It threw a p0335 crank sensor code just recently it also threw a p1320 ignition signal. I've been doing some reading up on this. So yesterday i cleaned the grounds took the crank sensor by the flywheel off and cleaned it off. Hooked everything up and boom. She started right up. I drove for at least an hour and thirty minutes. Shut it off twice let it sit within this time frame. So i get home Im parked out front and had the car running and my brother wanted to go to blockbuster and i waited outside for about five minutes before i decided to shut it off and go inside to see what's going on. So we came back out and no crank. So today i replaced the crank sensor by the flywheel, pulley, and cam sensor. And no crank still. So i checked to see if the crank sensor was getting a 5v from the ecm. And Im only getting 1v...Im so confused. Please help.__________________

 

So i tested the map sensor to see if its getting 5 volts and it is so that's a sign the ecu is working...Im assuming and hoping. Tapped it into the crank sensor still no go. Im at a loss here__________________

 

Find your fuel pressure regulator, and fuel pressure dampener. (two separate items at the drivers side of the engine block.)

Pull the rubber hoses one at a time. If fuel comes out of either one, that's your problem.

Plagued me for nearly a year before I narrowed that one down.

 

^That, or check your starter - Do you have to click it more than one time to start it up?