engine speed senson

[ferrarifreak013]

does anyone happen to know any thing about an engine speed sensor. I am doing a project for them in my auto2 class and am having some trouble finding anything about them online. any help would be greatley appreciated!

[johnnynumfiv]

You mean a tachometer?

[ferrarifreak013]

sorry but no its a sensor that is on the crankshaft and it is not the crankshaft speed sensor and i meant to say sensor on the thread title

[johnnynumfiv]

http://en.wikipedia.org/wiki/Crank_sensor

[ferrarifreak013]

yeah those are still two different sensors i need the engine speed sensor that sends messages along with the crank and cam positioning sensors to the ecm

[Quiggs]

That Wiki link pretty much said everything I was going to. A cam sensor works the same way in basic principle.

Depending on the car, it may have one or the other, or both.

[drakkie]

yeah those are still two different sensors i need the engine speed sensor that sends messages along with the crank and cam positioning sensors to the ecm

I think you have some errors in your approach. As far as i learned so far,the ECU gets the engine speeds from the crank sensor. I think you may be looking to far and doing too complicated...

[mmm_aapls]

I think you have some errors in your approach. As far as i learned so far,the ECU gets the engine speeds from the crank sensor. I think you may be looking to far and doing too complicated...

As far as I know, the ECU gets signals striaght from the crank / cam ect and uses those signals to manage the engine. An engine speed "signal" might be sent out on the CAN bus to other modules such as the TCM (transmission) and the EBCM (Brake module).
In the absence of wheel speed senors, this information can also be sent on the bus the the BCM where it is converted to a lower speed data and sent to the Instrument clutser to display RPM / Speed.

[ferrarifreak013]

yeah im very sorry i went to school today and confronted my auto teacher on the subject. he led me the wrong way when i started the project telling me that they are different and i went to school today and told him i think they are the same thing he said yeah you are right i just wanted you to figure that out by your self, so im sorry about all the mix ups.

[johnnynumfiv]

Lawlz n00b.

[LotusLocost]

yeah im very sorry i went to school today, and confronted my auto teacher on the subject. he led me the wrong way. When i started the project telling me that, they are different and i, went to school today and told him i think. They are the same thing he said yeah. You are right i just wanted you to, figure that out. By your self, so im sorry about all. The mix ups.

punctuation is a bitch huh

Yeah I know spelling is to..:P

[ferrarifreak013]

^ha yeah im sorry im terrible at english. oh and by the way johhny i had said the same things you said when he gave me the assignment, and i told you what happened from there

[johnnynumfiv]

Ubernoob.