Question about 2002 Saturn Sl
Which wire to which plug... plugs to coil pack
Posted by Anonymous on
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Posted on Jan 02, 2017
SOURCE: INTERMITTENT SPARK
Make sure the spark plugs are not platinum or anything other than regular copper plugs. The S-series uses a "waste spark" system and will destroy platinum plugs. Regular copper NGKs that came from the factory with the car work the best.
How do you know it is a spark problem? Are you able to verify spark, fuel and compression?
I ask because the usual solution to what you are describing in your problem is replacing the Engine Coolant Temperature Sensor (ECTS). The factory one is plastic and cracks. When it cracks it sends the PCM a signal that the engine is 40F below zero. The PCM will compensate by dumping A LOT of fuel into the engine to try and warm it up. It will cause all kinds of starting and idling problems.
Autozone or the dealer sells the better brass tipped one. The ECTS is located just under and behind the upper radiator hose. You'll need to remove the air intake tubing to see it or get to it. It has two wires going to it and goes into a connector. Squeeze the connector at the "ears" and it will come off.
Now is the time to check the connector for corrosion and gunk. If there is clean it out very well. If there is no gunk or corrosion continue on.
A 10MM DEEP well socket will take it out. Swap it quickly because some coolant will come out (a couple of ounces). Hand tighten it and snug it with the socket (not too much because it will strip out). Connector back on (either direction it's non polar). Put the intake back on and enjoy better starting and idling.
Posted on Jan 28, 2010
1998 Saturn SL
1.9 liter DOHC FIRING ORDER is: 1-3-4-2
There are several engines on this car - so check your vin number and go to the link above for more help
Posted on Mar 20, 2010
SOURCE: my saturn sc2 2001 run
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.
Posted on Nov 28, 2010
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