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Re: [GMCnet] Reviving the Cad 500 [message #162889 is a reply to message #162887] Tue, 13 March 2012 18:58 Go to previous messageGo to previous message
Larry is currently offline  Larry   United States
Messages: 2875
Registered: January 2004
Location: Menomonie, WI
Karma:
Senior Member
Ken Henderson wrote on Tue, 13 March 2012 18:15

I went ahead this afternoon and cranked-'er-up and, despite the fact
that I didn't change any cam/lifters nor combinations, went right into
the cam break-in routine of 2000 rpm for 30 minutes. That all went
fine and the engine sounds good. Maybe I will go ahead and change the
oil before I drive it tomorrow -- after I warm it up again.

Speaking of warm-up: It was pretty warm here today, probably 80*F.
During the engine run, the H20 temperature eventually got up to 202*F.
Then the fan clutch engaged and the temperature dropped back to
198*F, when the fan clutch disengaged. It did that about 8-10 times
during the run. Those are temperatures from the EBL What's Up
Display, which I trust more than my analog gauge (which did agree). I
have no idea what the fan clutch temperature was, but the
engage/disengage temperatures were very consistent. I'd prefer it to
cut in at a little higher temperature, but we don't get to choose.

When I last parked the coach, the main tank was empty and the aux
nearly so because I was considering dropping the tanks for hose
replacement. Therefore it didn't surprise me when the engine quit
just before I was about to shut it down. What did surprise me was
later, after I added 5 gallons of gas, was that the engine wouldn't
start. WUD says the Ignition +12 VDC is coming up for just a second
and then dropping off. Hmmmm... SHE came then to call me to supper,
so troubleshooting that has to wait until tomorrow. Surely can't be
much of a problem, but I can't imagine what offhand.

Ken H.


Hum, fan clutch doesn't have much of a range. Mine comes on at 210* and off at 195 or so....but then that's the least of your problems right now.

On mine, I was able to put a jumper between the terminals of the connector at the oil pressure sensor. That keeps the FP running so you can check to see if fuel is reaching the TB. Yes, I found out the hard way that there is power going to the OP switch full time...even with the switch off. Long story but ruined a FP not knowing that.
Keep us posted.


Larry Smile
78 Royale w/500 Caddy
Menomonie, WI.
 
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