RE: [DML] My first tune up

["Joseph Kuchan" <josephkuchan@xxxxxxxxxxx>]

The car may be as warm as its going to get, but the way the ECU detects that 
is when it sees a signal from the lambda probe. (O2 sensor) Make sure it is 
working and connected. If it hasn't been replaced in a long time you may 
want to just replace it so you don't have to wonder if it is working. Make 
sure it is connected to the ecu. There is a "quick disconnect" style 
connector in the single lead that goes from the lambda probe through the 
wheel well area into the box behind the drivers seat where the ECU is 
located. Make sure that has not become disconnected, which is a common 
issue. If the ECU does not see a signal from the lambda probe that could be 
your problem.

Joe Kuchan


>From: Ryan Wright <ryanpwright@xxxxxxxxx>
>Reply-To: dmcnews@xxxxxxxxxxxxxxx
>To: DMCForum@xxxxxxxxxxxxxxx, dmcnews@xxxxxxxxxxxxxxx
>Subject: [DML] My first tune up
>Date: Fri, 3 Feb 2006 21:12:30 -0800
>
>I've pulled the transmission twice but have yet to perform a tune-up
>beyond replacing the plugs, etc. That's lame, so now I'm attempting to
>perform my first real tune up on my DeLorean.
>
>I just need some help. :-)
>
>The diagnostic socket now works (thanks to Dave Delman; connection
>underneath was unplugged & damaged as you suggested). Dwell meter
>shows a steady position when cold, as it should. Unfortunately, once
>the car warms up, the dwell meter still shows a steady position. I
>tried running a ground from the ECU to the engine block as suggested
>here (http://mysite.verizon.net/vze7u0gn/id6.html), but it didn't
>help. I'm fairly certain I can hear the frequency valve buzzing.
>
>Now what do I do?
>
>Second piece of information to this puzzle: I started this quest
>because of a lean condition causing a "glug glug" noise on
>deceleration. Working blind since my dwell meter wasn't swinging back
>and forth, I dialed the mixture up 1/4 of a turn anyway. This fixed
>(!) the glug glug noise, but unfortunately caused the engine to begin
>surging up and down fairly significantly at idle - so I put the
>mixture back where it was.
>
>From here, I have no idea where to go. Any advice would be greatly 
>appreciated.
>
>-Ryan
>
>
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