My son's 2005 Saturn ion wouldnt start after running fine, no warning...it will kind of fire...rumble a second or two and then die....it's getting fuel....at least the bleeder valves shows fuel to the rail....it was super hot 106 today, but cant figure it out....how do I test for fire to the plugs...any guess? cam sensor? any help would be appreciated?
Country: United StatesMake: SaturnModel: IONYear: 2005Engine: 4 cyl
Took cap off in case it was a vapor lock....bleed some fuel through the bleeder...couldn't think of much else to do in the bank parking lot and it was 106
Hello, and thank you for letting us help you with your automotive question. There are a lot of possible causes of this. The most common cause of this type of failure on your vehicle is a bad ignition switch. They tend to fail constantly on this vehicle, especially on hot days. Before replacing this though you are on the right track to check for fuel or spark. The simple way on this vehicle is to add fuel directly into the engine. If it starts then it is fuel related. The fuel pump may have failed. If it still does not start then it may be a sensor or a problem with the valve timing. Check for fuel first and let me know what you find.
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Cleaned the MAS and shot some starter fluid into it...started and ran until the fluid was gone...checked fuses, but can't check relays...it's not getting fuel...maybe fuel pump, relay or filter clogged?
It can be any of these. Does the fuel pump come on when the key is turned on? You would notice a buzzing from the fuel tank when the key is on.