1993 Saturn SL2 Engine is flooding

Tiny
CDGPEG
  • MEMBER
  • 1993 SATURN SL2
  • 4 CYL
  • 2WD
  • MANUAL
  • 500,000 MILES
Have replaced O2, MAP, TPS, Air Intake sensor, air filter, spark plugs & wires, fuel injectors, cleaned butterfly in intake, and still get engine code 45, running rich. No Kidding it looks like a diesel when it is running down the road.
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Thursday, February 11th, 2010 AT 8:59 PM

5 Replies

Tiny
SATURNTECH9
  • EXPERT
Wow if the mileage u posted is real then u did good with ur car. How deos the car run smooth or does it miss?Looks like the only sensor u didnt replace was the coolant temp sensor that controls how rich or lean the car runs when they go bad they usually say the engine is running colder then they really are causing the computer to make the engine run too rich. There under 20. If u want to check it out its the bottom sensor screwed into the head theres two of them the top one runs the gauge bottom runs the fan and computer. The one ur looking for has two wires going to it a black one and a yellow one. Also check the connector make sure its not corroded if it is then u will have clean or replace it. The old sensors also crack and allow coolant to leak into the connector. So if u replace it make sure u get a brass tip one not a plastic tip one those are the ones that crack. If that all checks out good I would check out ur compression. Let me know what u find.
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Friday, February 12th, 2010 AT 10:53 AM
Tiny
CDGPEG
  • MEMBER
Yes the mileage is right, my father-in-law bought the car new. Thanks for the secondary temp sensor, it doesn't miss in fact on the highway it still purrs, and the compression is approx. 175 on all 4 cyls, a little low but evenly worn!
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Friday, February 12th, 2010 AT 2:08 PM
Tiny
CDGPEG
  • MEMBER
I have replaced the temp coolant sensor, now the cooling fan runs continuously, and it has engine codes, 14, 15, & 45 and the low coolant light is on, but I refilled the system after the sensor. On the brighter side of things, even though it has a code 45 it isn't flooding and is idling below 1k rpms. I took it for a test drive and when I push the clutch in at a stop the engine tries to slowly die out. Please help again.
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Sunday, February 14th, 2010 AT 4:17 PM
Tiny
SATURNTECH9
  • EXPERT


http://www.2carpros.com/forum/automotive_pictures/416332_img013_1.jpg


this the only pic i could get to upload on here right now.send me ur email adress via private email on here and i will send u the rest of the info.code 14 is coolant temp low.sensor,signal voltage low.code 15 is coolant temp.sensor,signal voltage high.from what u describe i would look into the code 15 because ur fan runs all the time and it sounds like ur engine is starving for fuel now.to set a code 15 the computer thinks ur engine is running above 265 f have u tried just plugging in the old sensor without installing it to see if ur fan turns off.maybe u just got a bad sensor.or unplug the sensor and see if ur fan turns off.let me know what u find.
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Monday, February 15th, 2010 AT 12:31 PM
Tiny
CDGPEG
  • MEMBER
Thanks for the help, I did take the new sensor back and exchanged it and everything is running like. Well as new as can be expected. It must have been a bad sensor.
I am going to make sure all my friends know about this site! Thanks again
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Wednesday, February 17th, 2010 AT 9:24 PM

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