I just started my car and left it started for 20 mins and then i started to hear a boiling noise. So I checked to see what it was and it was coming from the surge tank... i have a 99 sl1 saturn what c

SOURCE: My Saturn 1997 SL1 doen't like to start

CHECK THE COILS, WE HAD THE SAME PROBLEM SPENT MONEY ON NEW STARTER, BATT, ETC. .....GOOD LUCK

SOURCE: Saturn 2000 SL1 - 4

Try pulling the engine coolant temp sensor, They often crack not sure why but the ceramic tip cracks makes the car hard to start, or won't start, the car's idle may race while shifting gears, and often smokes. The sensor is on the right side of the engine when looking at it on the head. Easy to change and get too

SOURCE: 99 saturn sl1 hard to start if sitting for over an hour

you have leaking fuel injectors they are fouling out plugs.

SOURCE: rumbling noise on front of saturn ion car

Sounds Like A Wheel Bearing Has Failed. ISOLATE it & Replace it

ZJ Limited

• 17989 Answers
• Posted on Dec 29, 2009

SOURCE: 2002 Saturn SL1 check engine light code P0303

For old models, Saturn/GM also used the same material fiberglass gasket in your model, you almost certainly have a leak from a crumpled, sucked-in gasket as I suffered (and many others). I would say going to Saturn dealership to make repairs is probably not good idea if they are going to put in the same GM intake gasket part. Maybe possible to specify Felpro gasket with whatever shop you go to if you don't do the repair yourself. I would not go too long with your car in that condition as there is localized leaning at your cyl-3, that could cause a burnt exhaust valve there.

The exhaust is extra hot venting out that cylinder. P0303 is misfire at cyl-3. Mine was P0301 (cyl-1). You may get P0507 once in a while when PCM fails to control the fast idle caused by the leak under certain conditions. Most of the time, it is very slow idle caused by 3 cylinders running. You run smoother in cold idle because the IAC opens up to increase idle and end up lowering the manifold vacuum, so the reduced vacuum causes less leaking at the failing intake manifold gasket.

I'd say try cleaning everything with your ignition before replacement; Idle problems could be caused by engine coolant sensor (ECTS). Are you sure it was changed? Did they put on a new wire connector along with it?

Hope helps.