check engine light flash for a while, Why?

MMamdouh · Post by **MMamdouh** » Thu Sep 21, 2006 6:43 am

how did you clean the sensor? what did you use for cleanup?

MMamdouh

greatiliad · Post by **greatiliad** » Thu Sep 21, 2006 12:35 pm

MMamdouh wrote:how did you clean the sensor? what did you use for cleanup?

MMamdouh

take it easy, man
I just use a rug the clean the surface of the senser
probably it is dirty

MMamdouh · Post by **MMamdouh** » Thu Sep 21, 2006 12:49 pm

i didn't understand what do you mean by "take it easy" but anyways i wanted to know the procedure you did as every different sensor has its own method of cleanup and the last thing i want is a busted crank position sensor due to wrong cleanup procedure.

MMamdouh

greatiliad · Post by **greatiliad** » Thu Sep 21, 2006 1:41 pm

MMamdouh wrote:i didn't understand what do you mean by "take it easy" but anyways i wanted to know the procedure you did as every different sensor has its own method of cleanup and the last thing i want is a busted crank position sensor due to wrong cleanup procedure.

MMamdouh

the major method for ECU to detect engine misfire is to detect the speed change of crank shaft pulley.
the method of crank speed sensor is: when the conductor cut the magnetic fields, the conductor will generate electric current.
that is why the sensor does not tough the pulley and can know how fast it runs.

So, if any other conductor or any other magnetic things existing between the sensor and the pulley,
or the pulley is not installed perfectly, which means the destance between pulley and sensor will change when the pulley runs.
the current will change a little bit. and ECU misunderstand it and report engine misfire.

MMamdouh · Post by **MMamdouh** » Sun Sep 24, 2006 11:11 am

good explanation... i just realized that ABS sensors are using the very same concept.

MMamdouh