It did'nt crank/start :(

[L DC]

Huw, you bring up some very interesting points
regarding the grounds, which I can't help but to come
up with more Qs.

For instance, you said:

"Does that "little ground strap" to the engine mount
look heavy enough to be the return path for the
starter current?"

Yes, it looks beefy enough, BUT does that ground run
to the starter? It does not look like it does...at
least from looking at the starter connections.

Doesn't the starter get grounded as it makes contact
with the tranny housing? If so, I might have to strip
paint off of that area, which brings me to the next
point below.

Also you said:

"Is the engine mount well grounded to the block?"

That depends, I took such mount out and painted it, I
also painted the whole engine block, including the
area to which such mount attaches to the block.

So, if paint serves as an alienating agent between the
mount and the engine block, the answer is
then...NO...the engine mount is not well grounded.

But again, is paint an alienating agent in these
instances, I can see being the fact, say on
starter/alternator connections?

I mean, these engine blocks left the factory fully
painted in black, correct? And that paint did not
cause a ground problem, correct?

Many thanks in advance!!

-Louis





   

--- Huw Powell <audi at humanspeakers.com> wrote:

> 
> > I ran home from work yesterday to start my freshly
> > detailed/painted engine on my'86 5KTQ but it did
> not
> > crank.
> > 
> > Good thing "nosy neighbors" were not around, or
> else I
> > would have spent the night in jail.
> > 
> > I'm hoping that is something as simple as a bad
> ground
> > due to maybe paint in betwen sheet metal, such as
> in
> > the starter connection. 
> 
> That's a good place to start, besides making sure
> the starter 
> connections are set up right.
> 
> > Any other critical ground and
> > or + connection I should look besides that of the
> > starter and little ground strap to hooks up to the
> > driver-side alumium engine mount?
> 
> Well, besides the starter and alternator, which
> ground to the block, 
> there is usually a heavy ground attached to a tranny
> bolt (type 44 might 
> be different?).  The tranny should ground to the
> engine.  There are 
> usually some brown ECU wires grounded to the intake
> manifold.  The OXS 
> heater ground is via the exhaust system to the head
> (on 3 wire OXS). 
> Most of the block/head mounted sensors are grounded
> through the block 
> and head, too.
> 
> Does that "little ground strap" to the engine mount
> look heavy enough to 
> be the return path for the starter current?  Is the
> engine mount well 
> grounded to the block?
> 
> Anyway, that's all I can think of right off the top
> of my head.
> 
> -- 
> Huw Powell
> 
> http://www.humanspeakers.com/audi
> 
> http://www.humanthoughts.org/
> 


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