Still puzzled, car running too rich? moisture?

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#11

05-12-2010, 10:17 PM

craby

April 2011 ROTM

ROTM Winner's Club

Join Date: Mar 2009

Location: Tokeland, Washington

Posts: 21,753

this may help
http://shbox.com/1/4th_gen_tech2.html#knock_sensor

#12

05-13-2010, 08:25 PM

rwing7486

1st Gear Member

Thread Starter

Join Date: Jun 2006

Location: Rochester Hills Michigan

Posts: 162

Quote:

Originally Posted by z28pete

Rich running does not produce a white vapor, rich running results in black smoke. What you are probably seeing is normal moisture in the exhaust system being blown out. The smell of burning gasoline is common until the cats light up, and until the PCM switches to closed loop, and follows the O2 sensors. The smell goes away as the cats get to running temp. If you are still concerned, get a scanner, not a plain code reader, and see what the PCM is seeing.

ok so ive determined that the SES light for the DTC 43 code goes away after the car reaches closed loop. Now like u said pete once the car is in closed loop in follows the O2 sensors. Before it reaches closed loop does it follow the knock sensor? and i did notice the SES flashed for like 1 second while in closed loop...believe it was the DTC 43 since i didnt reset the codes on my computer and a new code didnt show up. so u think its either the knock sensor or the module?? im going to test the resistance of the knock sensor this weekend