Question about 1998 Saturn SL

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You may be faced with missing cylinders due to exhaust valves sticking or not seating/sealing well generally caused by excessive oil consumption through valve seals and poor fuel quality.Listen to the exhaust while idling in gear and you may hear popping and feel the suction inwards on your hand which helps indicate this problem exists.Perform compression test on all cylinders and should see no more than 20% variance in the compression readings. One last ditch effort before removing the head and servicing valves may be to replace valve seals and run chevron techron in fuel system and run engine at freeway speeds for an extended amount of miles.This is the only additive that has proven usefull with this problem but works best as a preventitive measure before cylinders start dropping.

Posted on Jul 17, 2009

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My 93 saturn sc2 seems like its running on 3 cylinders. I changed plugs, wires, and coil packs. And it still runs the same. What could be the problem?

mine did the same thing. Are you SURE you have the firing order correct?? Double Check that because the firing order is from the PASSENGER side to the driver side is....1 2 3 4 ... and on the coil pak from the PASSENGER side to the driver side is ... 4 1 2 3,
I hope this helps!

May 03, 2012 | 1993 Saturn SC2

1 Answer

My saturn sc2 2001 run on 3 cylender when she want. i have changed my coil pack wire spark and spark plug. the computer can cause de problem?

the fuel injectors can be the cause.first you must isolate which cylinder is shutting down. When the engine is missing pull plug wires one at a time to determine which one does not slow or make engine run worse. CAUTION: use rubber handle pliers or rubber glove to pull wires off plugs.

Nov 28, 2010 | 2001 Saturn SC

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Runs rough when it rains, already changed spark plug wires

at night spary a lite mist of water on the coils and see if they spark out,if you see sparks then replace the coils, make sure to clean the mating surface of where the coils and module sit, also clean the area where the module bolts up.

Apr 19, 2010 | 1993 Saturn SC2

2 Answers

The car idles rough at low idle speed approx 1000 rpm or less it smoothes out at about 1200. once engage the drive train it realy miss and stalls and it doesnt matter if it forward or reverse it stall and...

You probably are developing serious ignition problems.Your coil pack may be becoming in jeopardy as open plugs wires will re-route KV's straight through the module to ground as this high energy goes to the easiest path. I would isolate possible dropping cyclinders by pulling ignition wires while looking for corrosion on the coil ends and oil soaked or faulty(cracked) spark plugs on the engine/spark plug side of the wires.The upper engine mount(torque axis) may be sagging and will exaserbate this condition as well.Here are 4 possible parts that could get you feeling brand new

1-16167763 -coil module
1-21024814-plug wire set
4-21025103-spark plugs
*1-21022185-torque axis mount with 3 studs(11518883)


Aug 14, 2009 | 1993 Saturn SC2

2 Answers

1998 saturn sc2 P0303 code just came up. already

p303 is a cylinder 3 missfire I woul first check the coil and then the ingnition module, Then if this dont work you could have a bad injector. If after testing and still no fix you should check the compression in that cyl.

Jul 09, 2009 | 1998 Saturn SL

2 Answers

My 96 Saturn sc2 wont turn over or start.

Was there oil/coolant in cylinders when they were pulled?

Jun 22, 2009 | 1992 Saturn SL2

1 Answer

2001 saturn sc2 gets code 341&340 camshaft sensor

if you have high resistance in secondary ign. system (plug wires, ign.coil) this will cause this code to set. make sure you are using a high quality spark plug wire set. not from autozone!!! and denso non platinum tipped spark plugs. also use a diaelectric grease on plug wires to keep moisture out.

Feb 18, 2009 | 2005 Saturn SC2

1 Answer

Firing problem

If your vin# has a 7 in it, the firing order is 1342
The wiring order for the coil pack is 4123.

Jan 27, 2009 | 2001 Saturn SC

2 Answers

No spark

sounds like the timing chain or belt - remove distributor cap and have someone crank the engine - see if the distributor turns

Jan 03, 2009 | 1993 Saturn SC2

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