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Old 04-23-2012, 08:52 PM   #1
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84 SVO

Does anyone have an 84 SVO, if so have you had any cooling problems?
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Old 04-23-2012, 10:09 PM   #2
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Re: 84 SVO

No, but what are your issues and what have you done to remedy the problem so far?
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Old 04-23-2012, 10:12 PM   #3
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I have replaced the fan, and changed the thermostat. It is still running hot. Also when I turn it off I here a boiling noise.
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Old 04-23-2012, 10:14 PM   #4
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i would change the cap. sounds like its not sealing. the water will boil easier if not properly pressurized.
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Old 04-23-2012, 10:22 PM   #5
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Also it is idling at 1000 rpm. And I don't know why.

---------- Post added at 08:22 PM ---------- Previous post was at 08:17 PM ----------

What if the over flow tank is cracked?
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Old 04-23-2012, 10:28 PM   #6
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Re: 84 SVO

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Also it is idling at 1000 rpm. And I don't know why.

---------- Post added at 08:22 PM ---------- Previous post was at 08:17 PM ----------

What if the over flow tank is cracked?
Then it may be sucking air back into the system which would account for the boiling noise if you had an air bubble trapped in the engine.
The idle issue may be from a vacuum leak or blown intake gasket.
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Old 04-23-2012, 10:30 PM   #7
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Thanks I will check it tomorrow.
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Old 04-23-2012, 10:31 PM   #8
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autozone sells some plastic repair stuff if your are looking for a cheap repair.
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Old 04-23-2012, 10:51 PM   #9
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Re: 84 SVO

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autozone sells some plastic repair stuff if your are looking for a cheap repair.
That's good to know.
Years ago I had a plastic "spin welder" repair kit.
It had different types of plastic rods that the "welder" would spin at high speed to melt the plastic back together.
It actually worked pretty good on most plastics.
Have you seen anything like that lately?
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Old 04-23-2012, 10:55 PM   #10
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Quote:
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That's good to know.
Years ago I had a plastic "spin welder" repair kit.
It had different types of plastic rods that the "welder" would spin at high speed to melt the plastic back together.
It actually worked pretty good on most plastics.
Have you seen anything like that lately?
no but i have heard of that. i do know a guy that has a plastic welding shop. he repairs anything plastic. but i have never been to his shop or checked out his process.
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Old 04-23-2012, 11:07 PM   #11
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Re: 84 SVO

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no but i have heard of that. i do know a guy that has a plastic welding shop. he repairs anything plastic. but i have never been to his shop or checked out his process.
Well, if you run across one somewhere, shoot me a link please.


I have a heat gun like most plastic welding shops use, but it just doesn't work as well IMO.
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Old 04-23-2012, 11:10 PM   #12
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Quote:
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Well, if you run across one somewhere, shoot me a link please.

I have a heat gun like most plastic welding shops use, but it just doesn't work as well IMO.
Absolutely. The stuff at autozone is more like a plastic expoxy. But they do have different types. And from my experience they handle most needs. I actually used it on a crack in an overflow tank as he described.
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Old 04-23-2012, 11:49 PM   #13
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Check your fan circuit. Pull the sensor wire for it from the sensor on the lower intake and ground it and see if the fan runs. Can't recall the color of wire right now, but I just touch it to one of the strut bolts. All the earlier 2.3 cars re notorious for the fan relay box crapping out. It's under the cover at the base of your dash at the steering colmumn. A black box ~ 2x3x1" thick. I had to clean my board on the module where the pins in the plug slid in and replace the plug end as it had gotten hot and was brittle as hell with age too.
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Old 04-24-2012, 08:07 AM   #14
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I found that sensor, but the guy I bought the car from had someone put a toggle switch in the dash for the fan. So the fan works but it still doesn't cool.
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Old 04-24-2012, 09:11 AM   #15
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What is normal operating temp?
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Old 04-24-2012, 09:55 AM   #16
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+/- 195 ish
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Old 04-24-2012, 05:15 PM   #17
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I got it to stay cool. I had a spare radiator with elec. fan. Swapped them out and it stays nice and cool now. How accurate is the factory gauge. Also I unplugged the knock sensor and now it idles and drive perfectly. ))
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Old 04-24-2012, 09:06 PM   #18
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Re: 84 SVO

Factory gauges are not very accurate in most cases.

So, does it have a knock or was the sensor just defective?
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Old 04-24-2012, 10:37 PM   #19
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I don't really know, but I read somewhere that if you disconnect it will run smoother through the rpm range when you are "having fun". Should I buy an aftermarket gauge for the water temp. If so where should I put the sensor?
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Old 04-24-2012, 10:41 PM   #20
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Here are some pictures. I have given it a bath since then.
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Old 04-24-2012, 10:45 PM   #21
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Re: 84 SVO

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I don't really know, but I read somewhere that if you disconnect it will run smoother through the rpm range when you are "having fun". Should I buy an aftermarket gauge for the water temp. If so where should I put the sensor?
I would probably get an aftermarket gauge to ensure operating temps are within specs. It will need to be connected into a water jacket opening somewhere on the engine.

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Here are some pictures. I have given it a bath since then.
Looks good, well worth restoring.
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Old 04-24-2012, 10:55 PM   #22
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Yup, I got a deal on it. 500 because I deliver to the guy. I think I'm going to replace the carpet. The mice got to it over the winter when he parked it.
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Old 04-24-2012, 10:59 PM   #23
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Re: 84 SVO

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Yup, I got a deal on it. 500 because I deliver to the guy. I think I'm going to replace the carpet. The mice got to it over the winter when he parked it.
Hmmm, want your money back plus a few hundred?
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Old 04-24-2012, 11:01 PM   #24
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Idk it growing on me . Any other gauge suggestion?
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Old 04-24-2012, 11:09 PM   #25
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Re: 84 SVO

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Idk it growing on me . Any other gauge suggestion?
What gauges do you want?
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Old 04-24-2012, 11:13 PM   #26
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Something to help idk.
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Old 04-24-2012, 11:26 PM   #27
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Re: 84 SVO

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Something to help idk.
Well there is a very wide selection to choose from.
The most important are:
1. Temperature
2. Oil Pressure
3. Fuel Pressure
4. Boost Pressure


Go to American Muscle and browse through their selection and see what you like.
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Old 04-24-2012, 11:37 PM   #28
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I will thanks.
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Old 04-25-2012, 02:42 AM   #29
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Nice, our controller is prolly toasted if he put a manual switch... Plug the knock sensor back in, if it runs le crap that way you have another issue. Or maybe put a new one on. No is can lead to holy pistons (or worse). Do a good tuneup on it too, for a start.

---------- Post added at 03:42 AM ---------- Previous post was at 03:42 AM ----------

Quote:
Originally Posted by etc1006
Nice, our controller is prolly toasted if he put a manual switch... Plug the knock sensor back in, if it runs le crap that way you have another issue. Or maybe put a new one on. No is can lead to holy pistons (or worse). Do a good tuneup on it too, for a start.
Oh and Ford factory gauges aren't known to be real accurate.
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Old 04-25-2012, 08:39 AM   #30
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Where would the switch be?

---------- Post added at 06:39 AM ---------- Previous post was at 05:59 AM ----------

Hey etc1006 what is your timing set at? And how do you adjust it. I plugged the sensor back in and drove it. From about 2750-4000 it's bogs and stutters.
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Old 04-25-2012, 11:02 PM   #31
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I have it set to 10 btdc Iirc. These aren't like a v8 were you can bump the timing. It has a wire with an inline plug on the 84 that you need to unplug to read and set the timing correctly. It's called the SPOUT. Later cars had a little jumper you pulled out of a plug.
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Old 04-26-2012, 12:32 AM   #32
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Quote:
Originally Posted by etc1006
I have it set to 10 btdc Iirc. These aren't like a v8 were you can bump the timing. It has a wire with an inline plug on the 84 that you need to unplug to read and set the timing correctly. It's called the SPOUT. Later cars had a little jumper you pulled out of a plug.
Where is the wire?
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