saturn wagon emissions

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  #1  
Old 10-01-02, 04:52 PM
lancejo2001
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saturn wagon emissions

I have a 1993 sw2 saturn wagon. It is a 4 -cylinder manual transmission.

I have failed the emissions test four times now. I personally have put a

new O2 sensor in and a new temperature gauge in. I have also replaced

the plugs, changed the valve gaskets and changed the oil. The third time I got

an HC of 2.3514 (limit is .8000) and a CO of 18.0952 (limit is 15.000).

I then took the car in and they did an emissions test for ($80) and changed

the plugs( $66). I then got an HC of 1.2513. The CO was ok. Althougth, this is

almost the identical readings I got the very first time I took it in. What is the

next step and did I get ripped off or what at the shop? The car has 135k on

it and runs a little hot when sitting except if the A/C is on. Any suggestions?
 
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  #2  
Old 10-01-02, 05:12 PM
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Join Date: Apr 2002
Location: Pittsburgh,Pa
Posts: 2,417
You might want to look closer at the printout.I think you are giving us bad info.Your car would not even run at 18.09 co.Read the report and repost if I'm deciphering you right you might just have to change your oil.Please post back before attempting any further repairs.Co is measured in %.Hc measured in ppm.Co2 is measured in%.O2 also %.Give us those we'll help.
 
  #3  
Old 10-01-02, 09:15 PM
Joe_F
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I agree with Davo. Saturns are known to run hot and the fan will only kick on when the gauge nears the red zone.

By the way, there are TWO coolant switches on most Saturns. Both are located near the upper hose. One controls the fans and temp gauge, the other is the input to the ECM. I'll bet you only changed one .

Barring that, need better descriptions of the readings. With 18.0 on the CO, you'd be passed out (not to mention CO is odorless and colorless, but VERY fatal).
 
  #4  
Old 10-04-02, 04:04 AM
lancejo2001
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1993 satrun wagon emissions

No the test results I gave you were accurate and right off the report. I

did put in a pass-all type of emissions additive before I took the third test

and that might of accounted for the high (around 18.0) CO emission. Joe is

right I replaced one coolant switch only because the Saturn parts guy told

me the one closest to the hood controls the temp. and fan and that the

other one only controls the temperature gauge. Replacing that one would

only be a waste of my cash. Any other suggestions? Thanks
 
  #5  
Old 10-04-02, 05:39 AM
Joe_F
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Replace them both. Tune up the vehicle. Go through it thoroughly.

Check the EGR valve for carbonization. Rectify any exhaust leaks that are present. Does the vehicle burn oil? If it does, you may not pass, the oil may be getting picked up by the machine.
 
  #6  
Old 10-04-02, 06:03 PM
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Join Date: Apr 2002
Location: Pittsburgh,Pa
Posts: 2,417
Any emission machine I have ever used only reads up to 10%co 18%co
is almost double,your car would not run at 18% co which is carbon monoxide a real killer.Are you giving us co2 readings?Co2 is not poisonus to humans and is a byproduct of the total(14.7 to 1ratio)combustion of a fuel.Although tree huggers don't like CO2either.The readings you give us are innacurate,I do emission repair and cant understand the readings you give,I believe the readings you gave us are at least,if correct skewed .If you pm me which I don't prefer,you can send me a copy of the report through my email.Which I wont list here.Sorry Joe without his contact directly Idon't feel we can help him.
 
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