Scotty Posted February 24, 2005 Report Share Posted February 24, 2005 Good thought Paul, given that the prior owner overdid the sealant that tube could easily be clogged and stop the cooling system from stabilizing .. Link to comment Share on other sites More sharing options...
rollingthunder1994 Posted February 25, 2005 Author Report Share Posted February 25, 2005 As I said before, You guy's are the best. I printed all of your responses, and i have read them all. I'm not going to give up and just assume it's the head gasket. It's easier and cheaper to change all the hoses, and remove the line under the intake, to make sure it's not clogged. After i exhaust all my options, then i will move to the next level. I refuse to quit. I use to build motors and race car's in the 80's, so i refuse to let this new tech stuff beat me. LOL to all of you, I will most certainly keep you all posted, if i beat this, who knows, it may help the next person. Link to comment Share on other sites More sharing options...
Scotty Posted February 25, 2005 Report Share Posted February 25, 2005 Sounds good, keep us up to date.. Link to comment Share on other sites More sharing options...
Brian in AZ Posted February 26, 2005 Report Share Posted February 26, 2005 I'll make this REALLY EASY!!! I'm in Arizona...I replaced a radiator...I replaced coolant..I replaced the heater core...still the same crap. ITS YOUR THERMOSTAT! The things we used to look for as a rule of thumb dont apply to the temperment of an all aluminum engine. On a chevy 350, its easy to tell...either it works or it doesnt. But a Northstar's temp jumps up and down alot...you just never noticed it.When it gets REALLY hot , you start to watch and it just seems wierd/bad. IT'S NORMAL...whats NOT normal is how hi it goes. Replace the thermostat. Its a cheap, easy change, and you'll have peace of mind ofr $60 pts/labor and your local garage. PROMISE! Link to comment Share on other sites More sharing options...
yhman Posted February 26, 2005 Report Share Posted February 26, 2005 I as mentioned earlier, warm up the engine and check the 3/8" hoses, especially the one connected to the surge tank. If you feel it cold, it is defenatly clogged. You just need to clean the nipple which is just above the upper radiator hose connection in the engine, this nipple has an opening of 3 millimeters which is smaller than 1/8" and it could easily get clogged. I cleaned it using a drill bit of 3mm size by turning the bit by fingers only. Now my car runs perfect and no more over heat. this nipple is the air purge, please just give it a try and see. Link to comment Share on other sites More sharing options...
rollingthunder1994 Posted February 26, 2005 Author Report Share Posted February 26, 2005 Hi All, You guys are F_cking incrediable. Guru, your the best. OverHeat problems fixed. Last night after work, i decided to change all the small coolant hoses. I took off the metal line that runs from the surge tank to the water pump, no blockage. I then decided to take out the hollow bolt that is in the water pump housing. There was my problem. There was a piece of hose stuck in the hole, which was blocking correct coolant and air flow. After putting new hoses on and cleaning the nipple, i drove the car around this morning for about 3-hours. In traffic the hottest it got was 205-degrees. Once i started driving it went down to 201-and stayed there. I'm going to let the car cool for a couple of hours, recheck the tank, and top off if necessary. Thank's again guy's without your advice i would have been spending money, without solving the problem. Thank You Jeffrey!!!! Link to comment Share on other sites More sharing options...
Ranger Posted February 26, 2005 Report Share Posted February 26, 2005 I love a happy ending. Link to comment Share on other sites More sharing options...
Scotty Posted February 26, 2005 Report Share Posted February 26, 2005 Hi All, You guys are F_cking incrediable. Guru, your the best. OverHeat problems fixed. Last night after work, i decided to change all the small coolant hoses. I took off the metal line that runs from the surge tank to the water pump, no blockage. I then decided to take out the hollow bolt that is in the water pump housing. There was my problem. There was a piece of hose stuck in the hole, which was blocking correct coolant and air flow. After putting new hoses on and cleaning the nipple, i drove the car around this morning for about 3-hours. In traffic the hottest it got was 205-degrees. Once i started driving it went down to 201-and stayed there. I'm going to let the car cool for a couple of hours, recheck the tank, and top off if necessary. Thank's again guy's without your advice i would have been spending money, without solving the problem. Thank You Jeffrey!!!! I am so happy that you found your problem, you see its NOT always the head gasket as was mentioned above... A piece of hose, can you imagine? LOL, Mike Link to comment Share on other sites More sharing options...
PAUL T Posted February 26, 2005 Report Share Posted February 26, 2005 I love a happy ending. ME TOO!!! Link to comment Share on other sites More sharing options...
Bob D Posted February 26, 2005 Report Share Posted February 26, 2005 Hi All, You guys are F_cking incrediable. Guru, your the best. OverHeat problems fixed. Last night after work, i decided to change all the small coolant hoses. I took off the metal line that runs from the surge tank to the water pump, no blockage. I then decided to take out the hollow bolt that is in the water pump housing. There was my problem. There was a piece of hose stuck in the hole, which was blocking correct coolant and air flow. After putting new hoses on and cleaning the nipple, i drove the car around this morning for about 3-hours. In traffic the hottest it got was 205-degrees. Once i started driving it went down to 201-and stayed there. I'm going to let the car cool for a couple of hours, recheck the tank, and top off if necessary. Thank's again guy's without your advice i would have been spending money, without solving the problem. Thank You Jeffrey!!!! I love it. See what happens when a bunch of positive minded people stick together? '93 STS.. opened, dropped, wide...fast. Link to comment Share on other sites More sharing options...
Scotty Posted February 26, 2005 Report Share Posted February 26, 2005 I love it. See what happens when a bunch of positive minded people stick together? Now, just suppose you were a gloom and doomer and had really negative ideas about this engine, and you believed that when you had an overheating problem, you needed headgaskets as has been suggested here. Now suppose you met up with a shady or incompetent mechanic or dealer. He might say very quickly, this engine "is known for this" and you need head gaskets and rip you off either consciously or unconsciously! Because your negative thought process was already full of GLOOM, you get sucked in! This is the problem with drawing a conclusion before all possibilities and facts are exhausted and examined. One of the reasons I stopped responding to the gloom and doomer was because I thought, Well, the proof is in the pudding, lets see how this turns out! And look what happened, success! Do you think a person that believes the following statement would have had the success that Jeff has had?: You can cross your fingers, arms, legs, eyes, it doesn't matter. The first step to recovery is admitting you have a problem. There is nothing interesting about any aspect of this story except the fact that this poor guy was optimistically led on a wild goose chase in the first place. Optimism works best when tempered with realism. Wild GOOSE chase my POSTERIOR! Link to comment Share on other sites More sharing options...
Scotty Posted February 26, 2005 Report Share Posted February 26, 2005 By the way it looks like yhman and PaulT nailed this vapor vent line problem along with Guru confirming that it could cause overheating... Amazing... great job guys this was a great thread... The glass IS half FULL!!! Link to comment Share on other sites More sharing options...
Regis Posted February 26, 2005 Report Share Posted February 26, 2005 Oooooo that was amazing guys. I'm getting a little misty eyed myself. Excellent job! "Burns" rubber " I've never considered myself to be all that conservative, but it seems the more liberal some people get the more conservative I become. " Link to comment Share on other sites More sharing options...
mike5514 Posted February 27, 2005 Report Share Posted February 27, 2005 Great post! I know the first thing I will check when I have a overheat problem. Mike Link to comment Share on other sites More sharing options...
Scotty Posted February 27, 2005 Report Share Posted February 27, 2005 Great post! I know the first thing I will check when I have a overheat problem. Mike No MIKE, Immediately run and have your head gaskets replaced and have the block time-serted if you overheat! Link to comment Share on other sites More sharing options...
adallak Posted February 27, 2005 Report Share Posted February 27, 2005 QUOTE (mike5514 @ Feb 26 2005, 07:29 PM) Great post! I know the first thing I will check when I have a overheat problem. Mike No MIKE, Immediately run and have your head gaskets replaced and have the block time-serted if you overheat! the head gasket is the first thing to check out The saddest thing in life is wasted talent Link to comment Share on other sites More sharing options...
Scotty Posted February 27, 2005 Report Share Posted February 27, 2005 Yep next time I go to 240 degrees im pulling the HEADS, did I see a time-sert kit for sale? Link to comment Share on other sites More sharing options...
rollingthunder1994 Posted February 27, 2005 Author Report Share Posted February 27, 2005 You know what i like most about you guys? The fact that you all can be serious and funny at the same time. For the year that i've had the car, I got alot of negative feed back about it. I had people tell me run away from it when you get a chance, burn it, It's a car full of headaches, and the list goes on and on. I've loved the car since the style came out, and i was not going to let negative people change my mind about the car. I also realized that all those negative people didn't take the time to get to know the NS motor, and had the impression that this engine was maintanence free. It's an incrediable engine, but just like any other engine out there you have to take care of it. Link to comment Share on other sites More sharing options...
STSMan Posted October 6, 2005 Report Share Posted October 6, 2005 I've had the same exact problems as thunder. Concerning the purge line, mine doesn't flow constantly. More like flow then some steam/air, flow a again. Almost Like a gurgle, pulsating flow @ best. Is this a problem?? Link to comment Share on other sites More sharing options...
Ranger Posted October 6, 2005 Report Share Posted October 6, 2005 No, I don't think so. At idle it will probably pulsate or "gurgle". I suspect if you raise the RPM it will flow constant. The point is, that the line is clear, free flowing and not plugged. Link to comment Share on other sites More sharing options...
husky125cc Posted December 3, 2008 Report Share Posted December 3, 2008 Guys - you have no idea how psyched I am after reading this. I have been trying and trying to resolve this issue for a friend of mine for a month or so. I've been through everything in trying to prevent this car from becoming a permanent fixture in my driveway. I've went through thermostat, water pump, clogged radiator, head gaskets, etc, etc.... I've been thinking all along that it's a simple air lock issue as my brother suggested. I've been trying to resolve that and I even unhooked the surge tank line and blew through it and unhooked the line that goes to the top of the water pump in order to purge air out while adding fluid and water to the surge tank. It was burping up a lot so I ruled that out as a possibility. I even blew through the surge tank while having the line unhooked from the water pump. I had no blockage. Now I see there's a nipple on there and I feel like an idiot for not looking for that. My question is this....is the nipple from the 3/8" line located on the surge tank? on the line from the surge tank to the water pump? or is it located on the top radiator hose going into the water pump? Link to comment Share on other sites More sharing options...
BodybyFisher Posted December 3, 2008 Report Share Posted December 3, 2008 Guys - you have no idea how psyched I am after reading this. I have been trying and trying to resolve this issue for a friend of mine for a month or so. I've been through everything in trying to prevent this car from becoming a permanent fixture in my driveway. I've went through thermostat, water pump, clogged radiator, head gaskets, etc, etc.... I've been thinking all along that it's a simple air lock issue as my brother suggested. I've been trying to resolve that and I even unhooked the surge tank line and blew through it and unhooked the line that goes to the top of the water pump in order to purge air out while adding fluid and water to the surge tank. It was burping up a lot so I ruled that out as a possibility. I even blew through the surge tank while having the line unhooked from the water pump. I had no blockage. Now I see there's a nipple on there and I feel like an idiot for not looking for that. My question is this....is the nipple from the 3/8" line located on the surge tank? on the line from the surge tank to the water pump? or is it located on the top radiator hose going into the water pump? I am formerly Scotty from this thread. The purge line runs from the throttle body cooling circuit across the engine to the surge TANK. The first thing to do is to pull the hose off the surge tank while the coolant is cool (and NOT under pressure) and the engine idling and see if you have coolant flowing out of that line, you should get a steady stream. I am not sure what side of the car the tank is on the 99, on my 96 its on the passenger side. Anyway, where the hose connects to the throttle body area there is a bolt with a HOLE in it, that acts as a metering device. If that metering hole gets clogged, it traps AIR in the system and does not allow the system to fill with coolant and allows air to be trapped in the system and the water pump cavitates. Also check that the nipple at the tank is clear where the hose connects. Here is a view of the 96 bolt with a hole Pre-1995 - DTC codes OBD1 >> 1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/ Cadillac History & Specifications Year by Year http://www.motorera.com/cadillac/index.htm Link to comment Share on other sites More sharing options...
Ranger Posted December 4, 2008 Report Share Posted December 4, 2008 I am not sure what side of the car the tank is on the 99, on my 96 its on the passenger side. I think the '99 is on the drivers side. Link to comment Share on other sites More sharing options...
husky125cc Posted December 4, 2008 Report Share Posted December 4, 2008 I am not sure what side of the car the tank is on the 99, on my 96 its on the passenger side. I think the '99 is on the drivers side. Thanks for the info....located the nipple and all was clear. However, when I have the line off, it just spits fluid out as well as air. The thermostat appears to be working correctly and it seems when it opens, I lose flow. The car has had a new water pump installed before I got to it so I'm thinking it can't be that. The car is overheating anytime a load is put on it. I've tried everything in getting all the air out even though it's supposed to be self-purging. No visible leaks anywhere....also, when the thermostat opens, I lose heat inside the compartment. Link to comment Share on other sites More sharing options...
jking220 Posted December 4, 2008 Report Share Posted December 4, 2008 I am not sure what side of the car the tank is on the 99, on my 96 its on the passenger side. I think the '99 is on the drivers side. Thanks for the info....located the nipple and all was clear. However, when I have the line off, it just spits fluid out as well as air. The thermostat appears to be working correctly and it seems when it opens, I lose flow. The car has had a new water pump installed before I got to it so I'm thinking it can't be that. The car is overheating anytime a load is put on it. I've tried everything in getting all the air out even though it's supposed to be self-purging. No visible leaks anywhere....also, when the thermostat opens, I lose heat inside the compartment. I see you ruled out HGs in your first post. What makes you rule it out as a problem? Also, have you run your codes to see if you have anything? Jonah Link to comment Share on other sites More sharing options...
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