Have a temp issue and 'burping' my 93 rt10...help

[toddster911]

I just got a 1993 rt/10, 57000 miles, and noticed that the rad cap was puking a little coolant. After a little research, noticed I had a 7lbs cap and not a 16lbs like original (don't know why)All the while the temp would come up to 200-210 and drop back suddenly to 190. After the new cap was put on it would hover around 210-230 and stay steady and different rpm's, idle, and speed. ...figured maybe air or lack of coolant. I read pretty much all different ways to burp the system, I chose to raise the front by 6" and fill it, run it cap off untill the thermostat opened, well 200 degrees came and all the while just a little coolant would gurgle out (never saw the fans on--what temp should they run at?). (tried a funnel but it was to hard to place.) Now I figured the air was out, so I shut the car down to cap it....and WHOOSH a giser blew out the cap opening....must have lost 2 or so quarts for sure. I let it cool down ..rinced the colant off the body, and when cool I filled the cap area back up, capped it and called it a night (not fun one either...lol)
I figured this was not normal...wanted some input on what I did wrong, and where the temp guage should buzz around normally in driving conditions. The temp outside here is about 70-72,
also what temp the fans are supposed to cycle at? and how the heck are we supposed to see the resevoir tank through the gromet on pass side....see the bottle, not the level??

thanks to all that chime in

 

[dave6666]

If the vehicle was low on coolant while waiting for the stat to open and start circulation there may have been just air at the stat. Which could be at a slightly lower temp than the coolant would be at given the same situation otherwise. When you added the coolant to this hot engine it boiled and gurgled etc as it tried to displace this hot air. You're lucky you didn't get burned all to heck.

The best place to fill the Gen 1 from what I've heard is at the heater core. And make sure the fascia overflow bottle if Gen 1's have one is full and not cracked. Stick a small flashlight through the hole and read at the slot in the wheelwell.

__________________________________________________

Please note the complaint-free content. Dave, contemporary mod-rice Viper/Ricer owner, and I approve this message.

 

[Venomiss]

Also for a 93 that might be helpful for you.
http://forums.viperclub.org/rt-10-gts-discussions/640571-proper-burping-technique.html

 

[toddster911]

Thanks Dave6666, the original fill up was on a cold engine....never filled it again till it cooled down again. Think I had some parts right and some wrong...did not fill from heater core (although mine has been bypassed for some reason or other...better-colder a/c?). I got a quick call into Jonb...sorry again Jonb, did not know mondays were ''off'' days....I will take you up on you offer for a call back tomorrow though....as it seems burping the 93 is a whole other beast....will chime in with updates as the occur.

Thanks for the help....any step by step on the 93 and burping would be great....searches are weak.

cheers

 

[JonB]

93s dont have a surge tank, but instead a "too low" rad cap! Well chat more tomorrow, Thanks

 

[daytonprowler]

I changed all the coolant hoses on my '93 before running the Grand Caravan to VOI11.

You need to get the front of the car as high as you can. Take off the radiator cap and fill it through the heater core. As you fill through the heater core, you will be able to hear the air escape through the radiator neck.

As stated before, check your overflow tank and make sure it is not punctured. If it is.... it's taking in air.

I would investigate why the heater core is bypassed.

Good luck.

 

[toddster911]

thanks Dayton, the heater core was bypassed for heat radiation in cabin area, I will snap a few pic's tomorrow, did check the tank and it is puncture free and had coolant in it.

Should I empty all out again and start over, or remove the core bypass (hoses from core originally) and just top it off that way...do you normally pour it into the core after removing the hoses or into the hose itself? in my case the 2 hoses were disconnected from the core and a male-male tube and some clamps were used to bypass...the 2 open wholes of the core seemed to have been siliconed.

Will be talking to Jonb tomorrow, he will surely shine the light if I get no answers before. Thanks again Daytonprowler!

cheers

 

[daytonprowler]

Fill it through the heater hose itself. The trick is getting the radiator as high as you possibly can, filling from the back of the engine (through the heater hose) and actually pushing the air from the back of the engine and out the radiator neck.

Afterwards, I left the radiator cap off for a couple of hours just to see if anymore air might come out.

Also, I don't think I'd worry about the heat in the cabin. Hook the heater core back up. Most of the heat comes from the exhaust running under the floor boards.

If it's really hot out, turn the temp selector to cold and the ventilation system to direct air out of the dashboard vents. That way the residual heat from the heater core won't come into the cabin.

And with having the heater core hooked up (when you have the temperature turned to hot) you get that little bit of extra cooling for your engine. Think of a heater core as an extra miniature radiator.

 

[Early93Viper]

I have burped a GEN I over 20 times. Take off hood install this to your filler neck:

Lisle 24610 Newly Revised Ill-Free Antifreeze Funnel#

Have anti-freeze mix (a lot of it) ready. While car is running keep funnel full. Use stopper and turn off the car if she starts spitting up. (Put towels on your facia) Repeat until you get as much anti freeze as possible in there. Than fill up the coolant reservoir when the car has cooled down by taking off the hose to the filler neck and fill it up until it overflows.

 

[bluesrt]

if you jack the front of the car up on a 45 degree angle it will go a ton smoother on burping,the only way to fly

 

[toddster911]

Update:
I had the most wonderful and enlightening talk with Jonb today, he is one fine gentleman, and one hell of an encyclopedia (google search for you young people) on vipers!!....He took close to an hour of his time and very busy schedule to help me a newbie viper owner (not to cars though) and my burping/temp issue.
Heater core is the way to go and a cold engine-no need to ever run it to do this way...of course to test afterwards, but not to bleed...I did step by step as jonb explained (would hope to do a write up soon DIY style if I am permitted)....and I seem to have no air in my system anymore, its late hear and real crappy windy rainy weather so I will have to wait for the test run...but seems all good to me. THANKS AGAIN JONB....great speaking with you and learning years of experience worth on my year car in minutes....The Guru I dub thee

Second update....heater core was bypassed because it was leaking...I pressurized it and she peed like a race horse...so my snake will have no heat for now...not like I need it anyway in the summer.
I will chime back in with test drive and temps update soon....cheers vca!!

 

[toddster911]

Hello all, Thought I would share a small update, the temps seem to be good so far, I did however overfill the tank in the front seeing there is no looking window or any way to see it other than the very bottom of the tank....no biggie I think other than when it looks to expand, it spills a little coolant, would think itr will stabilize, seens to have less and less dribble from the tank and none from the rad or cap. The temps are rather cool and it hovers around the second line from 100 and when I let it sit in warmer weather (saturday was 75) at idle, it crept up to the start of the yellow, fans kicked on and brought it right back down to 190....if I roll with it warm, it will stay at 190....I think that is normal temps for a 93 antenna car, and yes the gaskets were changed for those who wondered.
So the `burp` seems to have worked unless what I am experiencing is not normal...next I will get the fan kit to get them running quicker..does anyone have the wiring for the fans? I thought of adding and overide switch to power it at any given time, as we know the fans only work when the engine is running (I also thought of a timer style setup...like a turbo timer but for the fans only, would keep fans on for 2 mins after key is turned off) Thoughts? I know Roe has a kit, but if I am not mistaken it only kicks them on earlier...want mine to run when engine shut off too for a few...like most cars do if hot.

 

[toddster911]

Just re-read the Roe kit ...it does what I want, but will it work for pre 96 cars...mine is a 93, I will call to see...

It pays to read....lol