Cadillac 501 engine

I posted here awhile back about having inherited my fathers Cadillac Eldorado with a 501 C.I. engine, and I'm still trying to get on top of the learning curve. Here is my latest dilemma: Looking at the engine heads there seems to be two temperature sensors screwed directly in to the heads. One is on the right-hand side all the way forward, the other is on the left-hand side all the way aft. There is a single black wire coming from the one up front and a green wire coming from the rearward one. They're not intersecting any oil or coolant passageways that I can see, so my conclusion is they are measuring the head temperatures directly. Did Cadillac actually make an engine system this sophisticated back then and if so how do I tell if it is working? Or am I even on the right page of music?

Reply to
ironrod
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One could be for the temperature gauge and the other for the hot light. Knowing what year the car was could help. Most call that engine the 500.

Al

Reply to
Big Al

"ironrod" wrote in news:2yXBe.735$5N3.662 @bgtnsc05-news.ops.worldnet.att.net:

You're not even on the right page of manufacturer. This is a Mustang group. F-O-R-D. Not even remotely related to C-A-D-I-L-L-A-C.

Reply to
elaich

He is well aware of that. Before berating regular posters to this group, perhapse you should be here awile first and see who who does and doesn't know where they are. It should have been a clue when he mentioned how he had posted about said Cadillac 501 in this group before.

Reply to
WindsorFox[SS]

"WindsorFox[SS]" wrote in news:NC3Ce.56200 $iU.1153@lakeread05:

Ah, the lokal Netcop. Been wondering where you were lurking. BTW, I'm the spelling cop. You need a dictionary.

"Perhapse?" "awile?"

Reply to
elaich

lokal??

Heh

Don Manning

Reply to
2.3Sleeper

"2.3Sleeper" wrote in news:PIiCe.549$zh7.501 @newssvr29.news.prodigy.net:

And you didn't figure out that was intentional?

Reply to
elaich

Reply to
ironrod

news:PIiCe.549$zh7.501

Yes, but I could not resist.

Don Manning

Reply to
2.3Sleeper

There's a bible at the bay:

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-- Mike

93 Cobra
Reply to
Mike R

He'll probably say he did that to mimic my typos...

Reply to
WindsorFox[SS]

C'mon, if someone in the Mustang group can't look at that subject line and see it's OT, then really don't need to be driving. Besides that anyone that's been here more than 8 months would remember the last time you posted about it. And yeah, I've been to the Caddi group. Unfortunately (for you) all of the old Cadillacs we had are gone. I have been sniffing around in the garage and if I find the Cadillac shop manuals I had I'll let you know.

Reply to
WindsorFox[SS]

"ironrod" wrote in news:xenCe.433048$cg1.233306 @bgtnsc04-news.ops.worldnet.att.net:

Sorry, my post was mostly tongue-in-cheek. It sounds like some kind of primitive emissions control to me. I would trace those wires, and see if they lead to a box that also has vacuum hoses attached. Then again, it just may be an unusually complicated "hot" warning.

Great source of info for those old cars are the Motor's and/or Chilton's manuals. Most libraries will have them in the reference section.

Reply to
elaich

You DO manage to attract all the new spazzes, don't you? Never fails.

Too funny.

:()

Reply to
dwight

Reply to
ironrod

I did some primitive troubleshooting today, and found that they do indeed appear to be head temperature sensors with a separate warning light than the water temperature sensor, looks as if both sensors have to close (right & left heads) before the light/alarm goes off, it also seems that the signal is wired into the drivers side door switch so that it self tests whenever you open the door with the ignition on. (You can see why this drives me crazy.)

Reply to
ironrod

Wish I had caught that one earlier, probably just what I needed.

Reply to
ironrod

Don't sweat it. Here's another one on the bay in excellent shape, with seller feedback at 100%. If you plan on keeping the ole Caddy, then don't let this one slip away. Your call...HTH

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-- Mike

93 Cobra
Reply to
Mike R

And you get the groundhog. Life is JUST not fair....

Reply to
WindsorFox[SS]

What's not fair about that? You saying I don't deserve groundhogs?

dwight

Reply to
dwight

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