Crank Sensor/Cam sensor

[Brian Warburton]

Lack of crank sensor normally = lack of engine running. There is no way I am aware of to get/keep an engine running without one.
Lack of CAM sensor gives the ECU a 1 in 2 chance of getting the synchronisation right, not a 1 in 6. The crank sensor with give the ECU an indication of TDC cylinder-1, just won't say whether it's on the compression TDC or the end-of-exhaust TDC.

Brian Warburton (ex-Ford EEC-iv/v team)

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From:	INTERNET:diy_efi at diy-efi.org, INTERNET:diy_efi at diy-efi.org
To:	[unknown], INTERNET:diy_efi at diy-efi.org
	
Date:	07/07/01 16:58 PM

RE:	Crank Sensor/Cam sensor

 
I have a question concerning the GM ECM# 18188021...  According to the GM 
manual I am using, both the crank sensor and the cam sensor are used to 
determine #1 tdc and thus to calculate the computer will calculate the 
correct sequence with a 1 in 6 chance of getting it wrong. Could the lack of 
a crank sensor coupled with a bad cam sensor cause this rich on one bank 
problem I am experiencing? It is a seemingly random condition.

Thanks!
Bill K
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Subject: Crank Sensor/Cam sensor
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