[s-cars] Bad CPS

[Tom Green]

Teddy,

You are going to take the cam sprocket off and put it back on.  How  
sure are
you that you aren't going to move the shaft a little, a half-tooth  
maybe?, and
then, which way did you move it?.  Guess wrong, and it will run, but  
not great.

You can't see the crank sprocket, so the only means to ensure it  
hasn't moved
is the belt kept in tension while you quickly remove and replace the  
sensor.
Think about Dave's analogy to laproscopic surgery, and also that you  
want
to minimize the time the "patient" is opened where something can go  
wrong.

If you are doing the timing belt at this time, sure, you can see and  
lock the
crank so you know it doesn't move and then put the cam sprocket back on
the timing mark, but that is totally different that the proposed  
procedure.

Tom

Previously written:
> Date: Mon, 19 Jun 2006 16:28:12 -0700 (PDT)
> From: Theodore Chen <tedebearp at yahoo.com>
> Subject: Re: [s-cars] Help! Bad CPS - Dealer quote
> To: Dave Forgie <forgied at ae.ca>, s-car-list at audifans.com,
> 	iain.atkinson at tesco.net
> Message-ID: <20060619232812.80469.qmail at web50606.mail.yahoo.com>
> Content-Type: text/plain; charset=iso-8859-1
>
> what's the problem with that?  is it that hard to put the belt back on
> if it falls off?  in fact, wouldn't taking the belt off give you  
> more room
> to work?
>
> i ask these questions because i'm preparing to do the timing belt and
> i'll replace the CPS while i'm at it.  looking at the writeup for
> replacing the timing belt, i don't see why there's an issue with the
> timing belt coming off, as long as the camshaft and crankshaft don't
> change position.
>
> -teddy
>
> --- Dave Forgie <forgied at ae.ca> wrote:
>
>> You just don't want the belt to come off the crank pulley,  the water
>> pump, or the tensioner, etc.
>>
>> Dave F.
>>
>>>>> Theodore Chen <tedebearp at yahoo.com> 06/19/06 11:54AM >>>
>> not sure i understand.  why does the belt position matter?  i thought
>> it's the position of the camshaft relative to the position of the
>> crankshaft
>> that matters.  seems to me that you could take the belt off and not
>> worry
>> about the belt moving, as long as the camshaft and crankshaft don't
>> move.
>>
>> -teddy
>>
>> --- iain.atkinson at tesco.net wrote:
>>
>>> I have slipped th belt off on a few I5 motors in the past but always
>> mark it
>>> first so i know if it's moved at all, finding a way of keeping
>> tension on it
>>> whilst you work is good idea, bungee tie onto the hood springs to
>> mind.