I have a 2000 Kia Sportage, that up until a few days ago, was running fine...going down the road died, and would not restart...the only code that came up was crank sensor, replaced that, ran fine for 3 blocks then died again...hooked back up to computer, and no codes. Wouldnt start for 2 days, then i got it started again, two blocks, and died again....both relays, iac, and fuel pump look fine..I dont have a fuel pressure tester, and cant afford to buy one that i will only use once...any shop wants to charge $100+ just to diagnose it...does anyone have any ideas on what could be wrong?