<VV> Non-Corvair No Start Help ! question
corvairduval at cox.net
corvairduval at cox.net
Wed Dec 23 13:41:04 EST 2009
OBD2 systems do not do the flashy light code retrieval. They are 5 digit
(one letter, 4 numbers) codes.
Yes, the scanner should read all codes in ECM memory without the engine
running.
The best way to test the CMPS is with a scope. Not a great answer, as it
requires another piece of equipment that's not cheap. Maybe you can borrow
one. Maybe someone else has a suggestion on a cheap test.
Frank DuVal
Original Message:
-----------------
From: roboman91324 at aol.com
Date: Tue, 22 Dec 2009 14:58:22 EST
To: virtualvairs at corvair.org, Chaz at ProperProPer.com
Subject: <VV> Non-Corvair "No Start" Help ! question
On most modern cars with computers, you can access the computer without
the scanner. The computer stores the problem errors in memory for a
predetermined number of car starts. You will need to jumper between two
contacts
and the error codes will flash at you from the dash board lights. You
then
look them up and hopefully figure out what the problem is. This is done
with the ignition on but without the engine running. At least, that is
how
it works with most makes of car. Buy a service manual from your FLAPS for
your series of car to learn what contacts to jumper and how to interpret
the
codes.
snip
By the way, most scanners are capable of reading the errors without the
engine running. Are you sure that yours is not capable of this?
snip
Good luck,
Doc
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Message: 5
Date: Tue, 22 Dec 2009 01:25:14 -0800
From: "Charles Lee" <Chaz at ProperProPer.com>
Subject: Re: <VV> Non-Corvair "No Start" Help ! question
To: <budpon at cs.com>, "Louis Armer" <carmerjr at mindspring.com>
Cc: virtualvairs at corvair.org
Message-ID: <F05E481847724BF899F8BC627546FEB9 at CharliePC>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
Besides my 1967 Monza, my "runner" is a 1996 Ford Probe (sorry about the
name there)
More to the point is that it is not running after overheating and boiling
over (something my Corvair NEVER did !)
Now it runs for 5 seconds and quits just like turning off the key.
The "probing" question is whether the camshaft sensor (in the distributor)
is "offline" ?
I have it on some authority that the "5 seconds" of run time is because
the PCM/ECU starts the car with initial cam values, and then seeks "real"
camshaft status, finds none and shuts down. (It runs smooth and high RPM
if I
flex the pedal until it shuts down)
I don't want to "shop and swap" for $300 to "test" a new distributor,
since CMPS is integral to it.
So, can anyone say if this is true, that the Cam sensor is a likely
suspect?
The car is OBD-II and I have a scanner, but can't get it to run long
enough to get DTC codes.
Any ideas on how to test the "Hall-effect" CMP sensor ?
Thanks
Charlie
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