Tuning, tuning and more tuning.

["cruznmd" <racuti1@xxxx>]

Since I had plugged the idle tube vacuum leak and couldn't find any 
other vacuum leaks, I have wanted to plug my O2 sensor back in, and 
let the Lambda computer try to regulate the frequency valve again.

I have a new O2 sensor. I can't find any vac leaks (which doesn't 
mean there aren't any).

I hooked up the dwell meter and watched. Since it is so much cooler 
here in Maryland now, the warm up took longer. Finally the O2 sensor 
began sending voltage.

The dwell meter exhibited a much more consistent behavior this time 
but I'm not sure it's right yet. I also read that if it wasn't 
behaving right, to run a new ground from the block to the ECU 
bracket. I did this but it didn't help.

The idle was a tad rougher, only noticable by ear. The tach never 
wavered.

The manual says the dwell meter should fluctuate between 35-45 
degrees. Mine goes to 30, climbs to 45 and just -drops- back to 30. 
The range is close, but isn't it supposed to be a steady rocking back 
and forth vs. a climb/drop sort of motion?

Thanks,

Rich
#5335