I have a SC1 Saturn - the service engine soon light has come on - I took it to a local garage they put it on the computer and said it may need plugs and wires or sensor of some sort. This morning on my way in it started chugging - it was already warm but I guess the term is "missing" - any ideas of what could be wrong.. It has low mileage and I have never had any problems - rountine maintenance done like clockwork... any ideas ???

Here's a good repair manual, Saturn SC1 Haynes Repair Manual Base Shop Service Garage Book oe eBay

Need a different mechanic

They never tested anything,
if you got codes

sc1 means saturn coupe with a single overhead cam engine sl1 means saturn sedan with a single overhead cam engine same engine and same parts for both these cars

sounds like either you have 2 of the wires crossed.........one is loose....probably #1 or your #1 plug needs regapped or is not tight and losing seal....all will cause a misfire and set the check engine light

If this light comes on and
stays on, it means that
service is required for your
vehicle.-- quote from saturn

according to the Saturn website it means the your car is due for schedualed maintance such as an ol change or tune up

Sounds like throttle positioning sensor.

most likely it needs tune up.or could be needing oil change. if it continues have a mechanic put an engine anylizer test done.

mcdevito75 here, You can check the cold idle switch or if equipt the idle speed motor, Where they are exactly is ?? try to contact a Saturn Dealership or auto parts store.

a p0341 code mean cam reference performance, really it means you have a secondary ignition problem,,,,like a bad ignition module
a bad crank sensor
a high resistance spark plugs,do not use bosch platinum plugs in these cars
high resistance spark plug wires,,,i work at the dealer and the first thing we do is replace the spark plugs and wires if that dont work we replace the crank sensor,if thatdont work we reaplce the ignition mondule,and by then your fixed and you started with the cheapest items first,,,i would try plugs and wires and a crank sensor,,,,wires $50 plugs $14 crank sensor $37

Two things to check. The fan relay, and the coolant temperature sensor. There may be two sensors, the two wire one is for the computer hence for the ran relay. Buy a haines manual at your local auto parts store. This will help you find what you are looking for, and its only about 15 bucks.

Alternatively you can put a jumper accrss the fan relay to make the fan run whenever the engine is running.