Cooling System Issues... Help!!!
10-02-2006, 04:30 PM
#1
Thread Starter
Join Date: Aug 2006
Posts: 21
Cooling System Issues... Help!!!
I have a question for all of you 5.0 guru's running around out there. I think, but am not sure, that maybe my 86 5.0 has a little issue. I have a very hard time getting the air out of the system, and it seems that if I dont take the gauge temp sensor loose a bit to let the air out there, my gauge goes nuts. My question is this. On the EGR cooling lines, the one that comes off the back of the EGR goes to the back of the intake/block (not sure which one), never seems to be wet inside, and if I blow through the hose that goes to the intake/block, I can't blow through this hose at all. Shouldnt this be able to pass water/coolant all the time? I hooked up a new water temp gauge this weekend, and it seems that the car will warm up to 200 or so, and just sit there. The gauge doesnt seem to move even when the thermostat should open. I have a 192 thermostat in it right now. Any ideas? I am more worried about that EGR line possibly being blocked, but any help would be great!
10-02-2006, 05:46 PM
#2
5th Gear Member
Join Date: May 2005
Location: Central New York
Posts: 3,850
RE: Cooling System Issues... Help!!!
well normal operating temp is 200 degrees, and a 192 will yield a 200 reading, if you ran a 180* tstat which is recmmended you'd be a little lower, does the temp guage move from 130-200 between startup and operating temp? the EGR is an emissions recycling system there shouldnt be any coolant in it. as for blowing air though it.... i'm not sure how you'd tell. But if it was clogged/blocked the check engine light would be on. Has your car overheated? Have you burped the system?
10-03-2006, 12:46 AM
#3
Thread Starter
Join Date: Aug 2006
Posts: 21
RE: Cooling System Issues... Help!!!
ORIGINAL: 7upedition
well normal operating temp is 200 degrees, and a 192 will yield a 200 reading, if you ran a 180* tstat which is recmmended you'd be a little lower, does the temp guage move from 130-200 between startup and operating temp? the EGR is an emissions recycling system there shouldnt be any coolant in it. as for blowing air though it.... i'm not sure how you'd tell. But if it was clogged/blocked the check engine light would be on. Has your car overheated? Have you burped the system?
well normal operating temp is 200 degrees, and a 192 will yield a 200 reading, if you ran a 180* tstat which is recmmended you'd be a little lower, does the temp guage move from 130-200 between startup and operating temp? the EGR is an emissions recycling system there shouldnt be any coolant in it. as for blowing air though it.... i'm not sure how you'd tell. But if it was clogged/blocked the check engine light would be on. Has your car overheated? Have you burped the system?
10-03-2006, 12:50 AM
#4
The Rogue Mod
Join Date: Feb 2006
Location: Maryland Sucka's!!
Posts: 21,918
RE: Cooling System Issues... Help!!!
You may have a circulation problem/blockage, but the egr passage lines will not cause the problem. What does the inside of the rad look like and are you using the stock fan or electric?
10-03-2006, 01:47 AM
#6
4th Gear Member
Join Date: Aug 2006
Location: Cape May County, NJ
Posts: 1,097
RE: Cooling System Issues... Help!!!
jack the car up in the front with the wheels off the gorund 3-4 inches , take the cap off the rad turn the heater on . Turn on the car let if run let ti idle at 1500-2000 rpm when the coolant rises and overflows out of the rad the air bubble will be gone. Air travels to teh highest point when traped soemtime you goto elavate teh fill point ofr the system for it to excape
10-03-2006, 01:47 AM
#7
5th Gear Member
Join Date: Feb 2006
Location:
Posts: 3,768
RE: Cooling System Issues... Help!!!
ORIGINAL: fish2222
It sits about 200 and rises to about 210 when I put my foot in it. I am just surprised not to see a change when the thermostat opens. As for the EGR, I am talking the EGR coolant hoses that are supposed to cool the exhaust down so it doesnt overheat the intake. They just have no coolant in them at all it seems and they are supposed to.
ORIGINAL: 7upedition
well normal operating temp is 200 degrees, and a 192 will yield a 200 reading, if you ran a 180* tstat which is recmmended you'd be a little lower, does the temp guage move from 130-200 between startup and operating temp? the EGR is an emissions recycling system there shouldnt be any coolant in it. as for blowing air though it.... i'm not sure how you'd tell. But if it was clogged/blocked the check engine light would be on. Has your car overheated? Have you burped the system?
well normal operating temp is 200 degrees, and a 192 will yield a 200 reading, if you ran a 180* tstat which is recmmended you'd be a little lower, does the temp guage move from 130-200 between startup and operating temp? the EGR is an emissions recycling system there shouldnt be any coolant in it. as for blowing air though it.... i'm not sure how you'd tell. But if it was clogged/blocked the check engine light would be on. Has your car overheated? Have you burped the system?
10-03-2006, 02:53 AM
#8
Thread Starter
Join Date: Aug 2006
Posts: 21
RE: Cooling System Issues... Help!!!
ORIGINAL: Twisted
Are you sure you mean to say EGR, and not throttle body spacer? I've never seen any coolant lines running near my EGR valve.
ORIGINAL: fish2222
It sits about 200 and rises to about 210 when I put my foot in it. I am just surprised not to see a change when the thermostat opens. As for the EGR, I am talking the EGR coolant hoses that are supposed to cool the exhaust down so it doesnt overheat the intake. They just have no coolant in them at all it seems and they are supposed to.
ORIGINAL: 7upedition
well normal operating temp is 200 degrees, and a 192 will yield a 200 reading, if you ran a 180* tstat which is recmmended you'd be a little lower, does the temp guage move from 130-200 between startup and operating temp? the EGR is an emissions recycling system there shouldnt be any coolant in it. as for blowing air though it.... i'm not sure how you'd tell. But if it was clogged/blocked the check engine light would be on. Has your car overheated? Have you burped the system?
well normal operating temp is 200 degrees, and a 192 will yield a 200 reading, if you ran a 180* tstat which is recmmended you'd be a little lower, does the temp guage move from 130-200 between startup and operating temp? the EGR is an emissions recycling system there shouldnt be any coolant in it. as for blowing air though it.... i'm not sure how you'd tell. But if it was clogged/blocked the check engine light would be on. Has your car overheated? Have you burped the system?
10-03-2006, 03:33 AM
#9
4th Gear Member
Join Date: Feb 2006
Location: Seattle, WA
Posts: 1,375
RE: Cooling System Issues... Help!!!
ORIGINAL: fish2222
I have a question for all of you 5.0 guru's running around out there. I think, but am not sure, that maybe my 86 5.0 has a little issue. I have a very hard time getting the air out of the system, and it seems that if I dont take the gauge temp sensor loose a bit to let the air out there, my gauge goes nuts. My question is this. On the EGR cooling lines, the one that comes off the back of the EGR goes to the back of the intake/block (not sure which one), never seems to be wet inside, and if I blow through the hose that goes to the intake/block, I can't blow through this hose at all. Shouldnt this be able to pass water/coolant all the time? I hooked up a new water temp gauge this weekend, and it seems that the car will warm up to 200 or so, and just sit there. The gauge doesnt seem to move even when the thermostat should open. I have a 192 thermostat in it right now. Any ideas? I am more worried about that EGR line possibly being blocked, but any help would be great!
I have a question for all of you 5.0 guru's running around out there. I think, but am not sure, that maybe my 86 5.0 has a little issue. I have a very hard time getting the air out of the system, and it seems that if I dont take the gauge temp sensor loose a bit to let the air out there, my gauge goes nuts. My question is this. On the EGR cooling lines, the one that comes off the back of the EGR goes to the back of the intake/block (not sure which one), never seems to be wet inside, and if I blow through the hose that goes to the intake/block, I can't blow through this hose at all. Shouldnt this be able to pass water/coolant all the time? I hooked up a new water temp gauge this weekend, and it seems that the car will warm up to 200 or so, and just sit there. The gauge doesnt seem to move even when the thermostat should open. I have a 192 thermostat in it right now. Any ideas? I am more worried about that EGR line possibly being blocked, but any help would be great!
However you should be cautious of getting the temps too high.
It may be a good idea to step down to a 180 stat, even though I would not personally recommend or do it that way myself.
I prefer to keep the coolant temps close to or just over 200F.
Check the rest of the system for problem areas.
How long does the temp spike last after you get on it?
When was the last time you flushed the coolant system?
What coolant mix are you running? (slightly more water will help, but stay within 60/40 to 40/60).
I would guess that the rad is starting to plug up a little, or there is some build up in the block/heads.
Good Luck,
jason
10-04-2006, 12:38 AM
#10
Thread Starter
Join Date: Aug 2006
Posts: 21
RE: Cooling System Issues... Help!!!
I just put in a new water pump and thermostat last week, and I am running probably closer to a 70/30 water/af mix. I completely flushed out the block and heater core when I did this, and the radiator is only about 4 weeks old, and probably only has less than 4 hours of total running time. I think I am just going to take the thermostat back out since all I use the car for is bracket racing anyway. It was much more consistant time wise with it out last time I ran it that way. I am just concerned more about that EGR coolant hose than anything else though.