Originally posted by Contour_dave:
... It runs like a champ until the outside air temp gets to about 75-80F. Then it just will run for awile and then die. Operating temp doesn't seem to matter in that as long as the outside air temp is cool, it will run forever and not miss a beat. ...



Originally posted by Tony2005:
Originally posted by Contour_dave:
... Would plugged exhaust (cat/pre-cat) cause the symptoms to become noticeably worse in warm weather?




No. If it weather related, most probably a vacuum leak or Intake Air Temperature sensor problem.



Originally posted by Tony2005:
Originally posted by Contour_dave:
... How do you test the temperature sensor...any quick and easy ways?

Thanks



http://www.autozone.com/servlet/UiBroker?ForwardPage=/az/cds/en_us/0900823d/80/1b/ca/f8/0900823d801bcaf8.jsp

According to Haynes, at 38 F, the resistance should be 35 to 40 K-ohms, at 182 F (1.9 to 2.5 K-ohms) and 218 F (1.0 to 1.3 K-ohms).

And since the PCM uses both the MAF and IAT to determine the amount of fuel to achieve the ideal air/fuel mixture ratio, you might as well clean the MAF sensor while you are at it.

MAF sensor
http://www.contour.org/mods/mods.php?s=howto&displayid=36
and
http://www.contour.org/ubbthreads/showflat.php?Cat=&Board=zetecmaint&Number=989728&page=&view=&sb=5&o=&fpart=1&vc=1
and
http://www.autozone.com/servlet/UiBroker?ForwardPage=/az/cds/en_us/0900823d/80/1b/cb/25/0900823d801bcb25.jsp




Check/change the Intake Air Temperature sensor and Mass Air Flow sensor.

Last edited by Tony2005; 05/30/06 01:33 AM.
"Always do the cheap and easy ones first." 1996 V6 ATX 96K miles