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If it looks like sandy coloured stuff you may have a blown cylinder 
head gasket and oil leaking into the water or vice versa.


--- In dmcnews@xxxxxxxxxxxxxxx, mike clemens <rmclemns@...> wrote:
> Everyone in the group, THANKS for all your ideas.  I have spent the 
last couple days checking one item at a time, firing up the car, 
checking the symptoms, shutting it down and waiting for it to cool 
down in this 100+ weather we've been having every day, then checking 
another item.  
> Many of you sent me in the right direction with vacuum leak ideas, 
but a special thanks to John Hervey and his persistence.  He kept 
pinging me to replace the WUR and after my third one, I am able to 
get full throttle.  Also, timnagin (Greg), from another forum, forced 
me to look at something I had never even touched or even looked at, 
the idle speed screw.  The PO Arsehole had screwed with this and 
never replaced the plug.  The idiot stuck a piece of kitchen sponge 
in there to keep out any dirt or moisture and air just sucked right 
through, but at the casual glance it looked like the hole was plugged.
> So, here's where I'm at, I can start the car up, the idle hunts a 
bit (100-200 rpm), but I can get full throttle with minimum 
backfiring.  After it warms up to operating temp, I get full 
throttle, no backfiring, but the idle is hunting from almost stall to 
1000 rpm.  I disconnected the idle speed switch and rpm goes to 1500 
rpm and is rock solid.  I have not driven it yet to put a load on it 
since the A/C is down and last night's low was 82 degrees.
> I'm replacing the O2 sensor as soon as the car cools down to see if 
that will will help the idle hunting.  Any other ideas?
> Also, new topic.  I flushed the coolant system to get out years of 
crud and old coolant.  Took a couple hours, but everything was 
running clear when I finished.  I then filled the system with just 
plain water, cause I figured I'd probably have to work on this system 
again.  This morning, I fired it up and while I was waiting for it to 
get up to temp, I checked inside the reservoir bottle.  I have a 
white foam in there that looks like soap suds.  The water level is 
good, fans came one at the correct temperature, and it cooled down 
appropriately.  Any ideas on what is causing the foaming?
> Mike   TPS    1630


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