Disco No Start continued

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Disco No Start continued

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Disco No Start continued - 7/4/2008 4:33:12 PM

bitter356

Posts: 8
Joined: 4/29/2008
Status: offline

Has anyone heard of this or is it fiction. On the RAVE cd under engine managemaent "When a new crankshaft position sensor is fitted or the flywheel removed,the adaptive values will have to be reset using TestBook." Any feedback on this??? Is there anyway to do this without TestBook???

Post #: 1

RE: Disco No Start continued - 7/5/2008 7:37:09 AM

roverguy7

Posts: 516
Joined: 4/7/2008
Status: offline

not entirely true, yes they should be reset, but they will relearn themselves over time and be right... the point of the adaption is so the ecm can learn any irregualities in the flywheel exciter ring, what it uses to know when to spark each cyl, youll never be off enough to cause a no start or anything just by changing out a sensor. as to doing it with out a t4, ive never seen a way, but who knows

< Message edited by roverguy7 -- 7/5/2008 8:07:27 AM >

(in reply to bitter356)

Post #: 2

RE: Disco No Start continued - 7/5/2008 8:03:38 AM

jkid

Posts: 554
Joined: 9/26/2007
Status: online

I replaced mine without any problems that I''m aware of, so yeah I guess you don''t HAVE to.

_____________________________

01 D2 SE (90K miles) Stock For now
1982 Mercedes 300SD (270k miles)

(in reply to roverguy7)

Post #: 3

RE: Disco No Start continued - 7/5/2008 7:18:21 PM

bitter356

Posts: 8
Joined: 4/29/2008
Status: offline

Thanks for your imput. I removed the new sensor and observed the rotating ring to result of the ring undulating back and forth 1/16". Is that enough of a variance to cause a no start? I also checked continuity for all connections from the sensor to the ECM and checked out good.

(in reply to jkid)

Post #: 4

RE: Disco No Start continued - 7/9/2008 5:08:05 PM

roverguy7

Posts: 516
Joined: 4/7/2008
Status: offline

probably not... when it doesnt start, does the check engine light turn off while cranking??

(in reply to bitter356)

Post #: 5

RE: Disco No Start continued - 7/14/2008 7:20:20 PM

bitter356

Posts: 8
Joined: 4/29/2008
Status: offline

Yes, while cranking, the CEL light goes out

(in reply to roverguy7)

Post #: 6

RE: Disco No Start continued - 7/17/2008 7:16:31 PM

roverguy7

Posts: 516
Joined: 4/7/2008
Status: offline

that means youre getting a good signal from the crank sensor... you have a seperate problem, could be fuel pressure, could be blown fuse number 2 under your hood, could be alot of things, check those first

(in reply to bitter356)

Post #: 7