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Cam Angle Sensors 92 SVX OBD I
Doing a poll... How common is it for a cam angle sensor (s) to become weak and cause hard cold (or even warm) starting? And does anyone have test procedure that can be done with an digital VOM? Thanks in advance...
Norm |
#2
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Re: Cam Angle Sensors 92 SVX OBD I
Quote:
As you probable know it is a magnetic pick-up, and the field does become weaker with age. Harvey.
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One Arm Bloke. Tell it like it is! 95 Lsi. Bordeaux Pearl, Aust. RHD.149,000Kls Subaru BBS wheels. 97 Liberty GX Auto sedan. 320,000Kls. 04 Liberty 30R Auto Premium. 92.000kls. Last edited by oab_au; 12-28-2004 at 05:59 PM. |
#3
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The problem with using a VOM is that it can't display fast enough, no matter what its sampling rate may be.
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ASE Certified Master Automotive Technician w/L1. ASE Certified Master Medium/Heavy Truck Technician. Certified EVT (Emergency Vehicle Technician) |
#4
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Thanks for the info. Any input as to why the field would weaken over time? Resistance change in the coil? Magnet on the cam gear loosing its flux?
Norm |
#5
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Quote:
In some other engines that use this type of magnetic pick-up, the flux gap around the magnet core, becomes bridged by metal filings. this shorts some of the magnetic flux out, at the case, reducing the flux across the pick-up gap, and hence the signal. The output of these sensors depends on the strengh of the field and the speed of rotation. This why they can give so much trouble when starting, when the speed is slow, and its ok when running, due to the speed. Harvey.
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One Arm Bloke. Tell it like it is! 95 Lsi. Bordeaux Pearl, Aust. RHD.149,000Kls Subaru BBS wheels. 97 Liberty GX Auto sedan. 320,000Kls. 04 Liberty 30R Auto Premium. 92.000kls. Last edited by oab_au; 12-29-2004 at 02:53 PM. |
#6
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Another consideration is that some manufacturers won't allow the fuel to enable until a specific voltage threshold is reached. This is done in order to help prevent flooding when trying to start a slow spinning engine.
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ASE Certified Master Automotive Technician w/L1. ASE Certified Master Medium/Heavy Truck Technician. Certified EVT (Emergency Vehicle Technician) |
#7
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Is this the error code you received?
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David B. SVXipedia @ SVX-IW.COM -- SVX Information Warehouse 2.0 coming...eventually! Ebony 1992 SVX LS-L 5 spd Koni/GC Stebro 187k miles RIP (Rust In Pieces) 1993 SVX 5 spd Koni/GC Stebro Polyurethane bushings still available! |
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