EST Distributor

[Bob Wooten]

I am not trying to group ALL of the part guys into one bin, it is just that
there are more that only know what the book tells them & can not find the
hood latch, than the other way around.  It is especially bad here in
California where it is extremely hard to keep your doors open when the cost
of doing business is SOOOO high.  the solution is to hire cheap labor.  you
hire 5 guys @ $5/hour & 1 guy @ $10/hour.  the 5 guys make you money & the 1
guy does the hard jobs & tries to keep the customers coming back when they
have a problem with one of the 5.

for example, I needed a Ported vacuum switch for my TR this weekend.  the
parts guy could not find ANY, there are 3 on my car & he could not find any.
I told him that I wanted to talk with someone else.  the someone else found
me one right away.  I went down there & bang there it was.  2 port ported
vacuum switch (the other 2 were 3 port).  I did not take the original one
with me as I broke my PVS socket & was going to get one while I was out (BAD
mistake).  so I get it home & what do you know, it is the wrong one as well.
is this a case of a incompetent parts guy or a bad reference.  I don't know
that but @ least he did know what I wanted & where to find it.  it sure did
not make me any happier when I got the broken one out & found it to be
bigger than the "new one" needless to say, the car does not have it right
now & I have a plug in the water jacket, but I will find out tomorrow when I
go visit them again.

Sorry to go so far off subject.  know that I spent 5 years in college
working @ an auto parts store cause the hours worked for me & I had people
follow me from store to store to get MY service, parts is parts around here
& the prices are all about the same, you shop for service.

BW


Oh yea, thank you for the on topic information :)

-----Original Message-----
From: owner-gmecm at diy-efi.org [mailto:owner-gmecm at diy-efi.org]On Behalf
Of Shannen Durphey
Sent: Thursday, March 29, 2001 9:17 PM
To: gmecm at diy-efi.org
Subject: Re: EST Distributor


The MAF/165 TPI cars use an external knock sensor module.  The MAP cars do
not.
VIN F is a 305, VIN 8 is a 350.  In 1991 F cars both use a 1227730, which is
MAP.
The VIN 8 engine is used in both the Corvette and F car.
Corvettes used the large cap distributor, F cars use the small cap style.
Large cap distributors designed to use with EST systems are functionally
interchangeable with small cap style.

Parts guys are generally no better than the information they have.  Just
because
you don't understand what he meant doesn't mean he doesn't.  Remember that
the
dealership parts man's main job is to look up parts based on year, make, and
model
and get those parts to the technicians quickly.  His job is _not_ to know
the
differences between parts, or even what the parts do.  The good parts guys
do go
beyond this.

Ya know, there's a few of us "professionals" on the list.  Prolly not a good
idea
to start laying blame yet...
Shannen

Bob Wooten wrote:
>
> I see.  I think that you are right, it is time that I get another source
of
> information.  what I was using was the print in the manual & an educated
> guess @ how it works.  the description that Keith quoted makes perfect
sense
> to me now.
>
> the reference to the 8 engine code is to the VIN.  there were two TPI
engine
> codes in 91, one was 8 & the other F.  I think that the difference was one
> was MAF & one MAP.  the distributor diagrams in the manual that I have are
> different for them as well.  It appears that the 8 Engine code is the
"HEI"
> style of distributor with the Coil in cap & the F is the tall thin
> distributor that I have that has an external coil.  but as I said, I don't
> have that one so I don't know what it really is.
>
> a fried of mine has an Iroc that is a MAF car.  His computer died & the GM
> dealer told him that there are two ECM's for his car.  one has the coil
> driver in the ECM & the other has another "module" that goes between the
ECM
> & the distributor.  this has always perplexed me as I don't recall having
> ever seen a GM "Module" that was not either in the distributor or in the
> ECM.  any thoughts or is this just another "parts guy" that doesn't know
his
> ECM from a hole in the ground?
>
> Tanx, again to all.
> BW
>
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