On Sun, 14 Jun 2009 14:46:26 GMT, "Chuck" wrote:


Hey guys... I need more input on this one. I don't think these things
should still be energized after twenty minutes of running. When I use a
voltmeter and pulse the key nothing happens because they are already
energized. I say that after warm-up they should dropout. What do you all
say?

I looked around a bit when you first posted. Enough to see that the
enrichers on Mercs are for cold engine.
My assumptions, and only assumptions is:
1. you apply juice.
2. a temp sensor in the enricher circuit says do or don't energize
enricher.
3. if it gets energized, the temp sensor also says when to turn it
off.

Should find the answer in a shop manual, or track the energizer
circuit to the temp sensor, and troubleshoot that.
Maybe a relay is stuck - if there's a relay in there.
Sometimes tapping on a sensor will tell the tale.
I told my kid to check the A/C high pressure switch wiring on his
Bonneville as a possibility for causing his cooling fans to stay on
all the time. Maybe one was off a harness and got burned or cut
by a belt.
Wires were good so he tapped the switch with a hammer handle.
Fans went off. Bad switch.
Maybe a real non-political OB mechanic will hold his nose and come in
here.

--Vic