Is damage possible?

TheRiseIsTheFall · Post by **TheRiseIsTheFall** » Sun Apr 27, 2008 9:15 pm

well, I had a locaL mechanic put the last bit of my leganza together since I was rather busy at the time, and the dumb shit forgot to hook up numerous wire harnesses(got most of them re-connected) but The main thing is HE DID NOT HOOK UP OR PUT IN the Cam Shaft sensor, It starts and runs(Not sure how?, I was under the impression you had to have it in to start it?)

I'm gonna take it to him tommorow to "FIX".. My question is, I've driven it approximatley 75-100 miles like that, could any damage have been caused by a lack of the sensor?

jorge · Post by **jorge** » Mon Apr 28, 2008 2:24 am

I think it no affect but if this pass with the crankshaft sensor the car never start...

Pir0 · Post by **Pir0** » Mon Apr 28, 2008 8:19 am

Camshaft positiion sensor doesnt determine where the cam sits, it gets pulses from the cam when it turns. So no damage would be caused that way, you wont have bent any valves or anything.

But as jorge said, most likely it just wouldnt have started.

jak4calibrah · Post by **jak4calibrah** » Mon Apr 28, 2008 10:27 am

i think cam sensor helps the computer in some way for ingnition timing but the cas is the most important, in my car (not daewoo) the cam sensor is used to time injector opening(sequential fuel injection SFI) and this is its primary job.

Post by **PrecisionBoost** » Tue Apr 29, 2008 5:31 am

cam sensor is not for ignition.... it's for the sequential fuel injection

The camshaft sensor is the main sensor used for both ignition and fuel injector timing.

Given the ignition is wasted spark it fires 1&4 and 2&3 together at each compression event (doesn't care which cylinder has compressed air/fuel... it fires both cylinders )

On the other hand for sequential fuel injection the ECU must determine which cylinder ( either 1 or 4 ) or ( either 2 or 3 ) is in it's intake stroke.

It does this via the camshaft sensor.

When you first start up without the camshaft sensor installed you have a 50/50 chance of getting it right.... the engine will try and run even if the camshaft sensor is non-functional.

You might start it once and it will work just fine.... then the next time you try you might get the injectors one rotation out of sequence and the car will barely run or run like crap.