covered the bases? (was: Computer crosses; Type 44 won't

[Ben Swann]

What codes are being generated?  A bad ECU will either give 1 1 1 1 or
nothing on a no start condition.  In most other cases a code would be
generated.

I have heard that a MAC-14 could substitute for a MAC-11, but don't know
about the reverse.  I don't think you will blow anything up trying.

Remember - you need to have all three of the signals present and in proper
order - the Hall sender, the RPM/Speed sender and TDC/Reference sender to
sync. up and have the ECU put out what the coil uses as a primary and also
the fuel pump relay get pulsed only after those signals are present.

Ben

[Date: Fri, 15 Apr 2005 17:54:03 -0600
From: Dennis Unsworth <unzie at ixi.net>
Subject: Re: covered the bases? (was: Computer crosses; Type 44 won't
go now)
To: <quattro at audifans.com>
Message-ID: <BE85B03B.97FD%unzie at ixi.net>
Content-Type: text/plain; charset="US-ASCII"

Thank you, listers. She still won't go, but not for lack of trying. Here's a
quick list and if you have ideas, love to hear from you.

Unless we've missed something, next step is to replace the computer with one
from another MC-2 (dual knock sensor) Type 44.

- No start; no spark, but plenty of fuel. Was very wet under the hood;
wouldn't start; started after a few hours of drying and drove home, but
wouldn't start again save for once at the shop - rapped on the computer (it
was clean and dry in there) and it started once, but hasn't started since.

- Checked all fuses; all relays. Jumpered fuel pump relay - it's good.

- Reference sensor and speed sensor good; ignition coil and power to coil
good. Checked all resistance readings to coil; good.

- Also checked power and ground to power output stage and power to computer.
Good.

- But no signal from computer on pin #2;

Does all this point to an ecu transplant?

Dennis
Helena Montana
90 200 TQ - Montana "222 TQ"]