cyrez00 Posted January 12, 2008 Report Share Posted January 12, 2008 So what is the latest on this story? It's so quiet all of the sudden! Marc. If you are in complete control..... you are not going fast enough.... Link to comment Share on other sites More sharing options...
Marika Posted January 12, 2008 Author Report Share Posted January 12, 2008 So what is the latest on this story? It's so quiet all of the sudden! Marc. I've added a truck load of stop leak tablets to the antifreeze. Given the fact that the radiator is brand new I'm not overly concerned that it might get clogged by the tablets. It's still losing antifreeze but at a much slower rate. I'm still investigating my options on the repair of the engine, basically trying to locate a good mechanic. I'll keep everyone informed. By the way, the donations, which I thank everyone for, are still sitting in the paypal account. If you really want to make people safe drivers again then simply remove all the safety features from cars. No more seat belts, ABS brakes, traction control, air bags or stability control. No more anything. You'll see how quickly people will slow down and once again learn to drive like "normal" humans. Link to comment Share on other sites More sharing options...
Bruce Nunnally Posted January 12, 2008 Report Share Posted January 12, 2008 When I had a problem with the NS in my 96 the advice from a trusted source was to add extra sealant tabs. His argument was that it might seal, and couldn't hurt. Bruce 2023 Cadillac CT4-V Blackwing Follow me on: Twitter Instagram Youtube Link to comment Share on other sites More sharing options...
Ranger Posted January 12, 2008 Report Share Posted January 12, 2008 Marika, The fact that you are "still losing antifreeze but at a much slower rate" leads me to believe that it is not a head gasket. The tabs would not low down a head gasket leak as it would be under very high pressure. An intake manifold gasket (much cheaper repair) is much more likely (assuming that it is not an external leak). Link to comment Share on other sites More sharing options...
Marika Posted January 12, 2008 Author Report Share Posted January 12, 2008 Marika, The fact that you are "still losing antifreeze but at a much slower rate" leads me to believe that it is not a head gasket. The tabs would not low down a head gasket leak as it would be under very high pressure. An intake manifold gasket (much cheaper repair) is much more likely (assuming that it is not an external leak). I tend to agree which is why I'm concentrating on finding a good mechanic, someone I can trust. I'll keep everyone informed. If you really want to make people safe drivers again then simply remove all the safety features from cars. No more seat belts, ABS brakes, traction control, air bags or stability control. No more anything. You'll see how quickly people will slow down and once again learn to drive like "normal" humans. Link to comment Share on other sites More sharing options...
Marika Posted January 22, 2008 Author Report Share Posted January 22, 2008 Overheated again this morning. After I stopped the car, I could hear violent bubbling and belching under the hood. I carefully opened the hood and found antifreeze had spewed out of the top of the recovery tank, it went all over the battery etc. After the engine cooled down, I opened the radiator cap, it was low so I refilled it to the top. Didn't take much antifreeze to refill it. I'll be using a car today that the auto body shop at the corner is loaning me. I checked the oil level, it was LOW and the oil looked fine... So I guess the head gasket is NOT blown and it probably IS the intake manifold that's leaking. On the road to recovery!! (I hope). Now, just to find a mechanic I can trust. If you really want to make people safe drivers again then simply remove all the safety features from cars. No more seat belts, ABS brakes, traction control, air bags or stability control. No more anything. You'll see how quickly people will slow down and once again learn to drive like "normal" humans. Link to comment Share on other sites More sharing options...
jasper60103 Posted January 22, 2008 Report Share Posted January 22, 2008 Marika: If its any consolation, I had the intake manifold gasket replaced on my 95 Chevy Lumina (3.1) over a year ago. Its still holding strong. My mech says GM improved the intake manifold gasket over the factory installed one. Of course they never admitted fault. Link to comment Share on other sites More sharing options...
BodybyFisher Posted January 22, 2008 Report Share Posted January 22, 2008 Marika: If its any consolation, I had the intake manifold gasket replaced on my 95 Chevy Lumina (3.1) over a year ago. Its still holding strong. My mech says GM improved the intake manifold gasket over the factory installed one. Of course they never admitted fault. This is a totally different type of engine, the 4.9 is a traditional intake setup, the 3100 and 3400 has upper and lower intake manifold gaskets. The gaskets and torque were re-designed. GM faced a class action suit in Canada over the 3100/3400 intake manifold gaskets see this >> http://forums.speedarena.com/zerothread?id...6581&page=1 I have done the intake gaskets on a Chevy 3400 http://caddyinfo.ipbhost.com/index.php?sho...876&hl=3400 and a Pontiac 3400 http://caddyinfo.ipbhost.com/index.php?sho...330&hl=3400 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...
jasper60103 Posted January 22, 2008 Report Share Posted January 22, 2008 This is a totally different type of engine,... In spite of the differences, I was just trying to stress the point if the job is done right, it should work. Also, I'm aware of the lawsuite. Unfortunately, it doesn't help me. thanks, -jasper Link to comment Share on other sites More sharing options...
BodybyFisher Posted January 22, 2008 Report Share Posted January 22, 2008 This is a totally different type of engine,... In spite of the differences, I was just trying to stress the point if the job is done right, it should work. Also, I'm aware of the lawsuite. Unfortunately, it doesn't help me. thanks, -jasper No question if it's done right she will have not problems, the intake on the 4.9 is WAY easier than the 3100/3400. If you look closely at these intake gaskets you will see why they leaked on the last 3400 I did, on the 3400 all the ROCKER ARMS must come off and all of the push rods must come out, they must be kept in order as they are different sizes. That is NOT the case with the 4.9, the intake comes off without all of the rocker arm/pushrod work. Notice the crack in the interior at the top of this coolant jacket seal, look at the seal at the lower right, in addition there were NO over torque stops on the original gaskets/seals. There was OIL in the Coolant also, this is the coolant bottle notice the OIL floating: 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...
Jan Olsson Posted January 24, 2008 Report Share Posted January 24, 2008 Any luck over there Marika? Link to comment Share on other sites More sharing options...
Marika Posted January 24, 2008 Author Report Share Posted January 24, 2008 Any luck over there Marika? I found a mechanic in town who replaced the thermostat and topped off the antifreeze and the engine oil and as of today it was running OK. We'll see how long that lasts before the next episode. If you really want to make people safe drivers again then simply remove all the safety features from cars. No more seat belts, ABS brakes, traction control, air bags or stability control. No more anything. You'll see how quickly people will slow down and once again learn to drive like "normal" humans. Link to comment Share on other sites More sharing options...
Jan Olsson Posted January 24, 2008 Report Share Posted January 24, 2008 For all that it's worth I think it's the intake manifold. It seems to be the weak spot (at least on the 4.5 engines) Wouldn't it be an idea to look at the intake mainfold gaskets? They are fairly accessible and wouldn't take that long (=not too much money) to check? Keeping my finger crossed! Link to comment Share on other sites More sharing options...
Marika Posted January 24, 2008 Author Report Share Posted January 24, 2008 For all that it's worth I think it's the intake manifold. It seems to be the weak spot (at least on the 4.5 engines) Wouldn't it be an idea to look at the intake mainfold gaskets? They are fairly accessible and wouldn't take that long (=not too much money) to check? Keeping my finger crossed! I plan to take the car back to the mechanic next week and let him check the fluid levels and then hunt for leaks. I'm going to solve this problem if it makes me end up in a nut house.... If you really want to make people safe drivers again then simply remove all the safety features from cars. No more seat belts, ABS brakes, traction control, air bags or stability control. No more anything. You'll see how quickly people will slow down and once again learn to drive like "normal" humans. Link to comment Share on other sites More sharing options...
Marika Posted January 25, 2008 Author Report Share Posted January 25, 2008 After ONE day of peace and quiet, the car overheated again this morning. Temperature shot up to 260F, then ENGINE HOT, IDLE ENGINE showed and then the temperature went back down to 232F but was very unstable. Opened the hood and found that again, antifreeze was all over the inside of the engine compartment, have come out of the recovery tank. I think it's just time to send this car to the junk yard. If you really want to make people safe drivers again then simply remove all the safety features from cars. No more seat belts, ABS brakes, traction control, air bags or stability control. No more anything. You'll see how quickly people will slow down and once again learn to drive like "normal" humans. Link to comment Share on other sites More sharing options...
Ed Hall Posted January 25, 2008 Report Share Posted January 25, 2008 Just a thought. Have you checked the "T" next to the firewall on the passenger side. These have been known to leak intermittently. Link to comment Share on other sites More sharing options...
Marika Posted January 25, 2008 Author Report Share Posted January 25, 2008 OK, surfing the web I used google with the following search terms: engine overheats, heater blows cold. Seems it can be a sticking thermostat which was supposedly changed yesterday and also an air lock in the system can also cause an overheat but can still cause the heater core to blow cold. Yesterday, the mechanic replaced the thermostat and refilled the system and topped off the oil. Didn't work and wasted $60 of my money. Does the heater core have an additional thermostat? Some cars apparently have two thermostats, one for the engine and one for the heater core. If you really want to make people safe drivers again then simply remove all the safety features from cars. No more seat belts, ABS brakes, traction control, air bags or stability control. No more anything. You'll see how quickly people will slow down and once again learn to drive like "normal" humans. Link to comment Share on other sites More sharing options...
jasper60103 Posted January 25, 2008 Report Share Posted January 25, 2008 No question if it's done right she will have not problems, the intake on the 4.9 is WAY easier than the 3100/3400... BBF, just curious have you heard of any complaints about the 3800 engine, Olds Delta88? Some say it was a good engine. That will be my next car, for my son that is. I plan to sell my Chevy Lumina, 3100. thanks, jasper Link to comment Share on other sites More sharing options...
KHE Posted January 26, 2008 Report Share Posted January 26, 2008 After ONE day of peace and quiet, the car overheated again this morning. Temperature shot up to 260F, then ENGINE HOT, IDLE ENGINE showed and then the temperature went back down to 232F but was very unstable. Opened the hood and found that again, antifreeze was all over the inside of the engine compartment, have come out of the recovery tank. I think it's just time to send this car to the junk yard. I don't think so. I think it is time to have the mechanic remove the intake manifold and inspect/replace the gaskets - based on my earlier post(s), I am betting that is the problem. You have too much invested in the car to throw in the towel now. Kevin '93 Fleetwood Brougham '05 Deville '04 Deville 2013 Silverado Z71 Link to comment Share on other sites More sharing options...
Marika Posted January 26, 2008 Author Report Share Posted January 26, 2008 After ONE day of peace and quiet, the car overheated again this morning. Temperature shot up to 260F, then ENGINE HOT, IDLE ENGINE showed and then the temperature went back down to 232F but was very unstable. Opened the hood and found that again, antifreeze was all over the inside of the engine compartment, have come out of the recovery tank. I think it's just time to send this car to the junk yard. I don't think so. I think it is time to have the mechanic remove the intake manifold and inspect/replace the gaskets - based on my earlier post(s), I am betting that is the problem. You have too much invested in the car to throw in the towel now. I know you're right, I do have way too much $$$ and time invested in this car to just toss it away. I just wish I could find a mechanic that knows what the heck he's doing. If you really want to make people safe drivers again then simply remove all the safety features from cars. No more seat belts, ABS brakes, traction control, air bags or stability control. No more anything. You'll see how quickly people will slow down and once again learn to drive like "normal" humans. Link to comment Share on other sites More sharing options...
Ranger Posted January 26, 2008 Report Share Posted January 26, 2008 Does the heater core have an additional thermostat? No. Link to comment Share on other sites More sharing options...
BodybyFisher Posted January 26, 2008 Report Share Posted January 26, 2008 No question if it's done right she will have not problems, the intake on the 4.9 is WAY easier than the 3100/3400... BBF, just curious have you heard of any complaints about the 3800 engine, Olds Delta88? Some say it was a good engine. That will be my next car, for my son that is. I plan to sell my Chevy Lumina, 3100. thanks, jasper Jasper, I have not heard the same problems with the 3800 engine at least not as chronic. If you go to the link I provided above there was some mention of the 3800. 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...
BodybyFisher Posted January 26, 2008 Report Share Posted January 26, 2008 After ONE day of peace and quiet, the car overheated again this morning. Temperature shot up to 260F, then ENGINE HOT, IDLE ENGINE showed and then the temperature went back down to 232F but was very unstable. Opened the hood and found that again, antifreeze was all over the inside of the engine compartment, have come out of the recovery tank. I think it's just time to send this car to the junk yard. I don't think so. I think it is time to have the mechanic remove the intake manifold and inspect/replace the gaskets - based on my earlier post(s), I am betting that is the problem. You have too much invested in the car to throw in the towel now. I know you're right, I do have way too much $$$ and time invested in this car to just toss it away. I just wish I could find a mechanic that knows what the heck he's doing. Why did he replace the thermostat?, didn't you have the thermostat replaced during the last overheating fiasco? You need to just bite the bullet at this point and have the intake manifold gasket replaced, it needs to be eliminated. Has anyone pressure tested the cooling system? You have said that your oil in the valve covers looks like honey, that is an indication that water is getting into the oil. The GURU said OFTEN that the intake was a prime spot for leaks on this engine. 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...
Marika Posted January 26, 2008 Author Report Share Posted January 26, 2008 After ONE day of peace and quiet, the car overheated again this morning. Temperature shot up to 260F, then ENGINE HOT, IDLE ENGINE showed and then the temperature went back down to 232F but was very unstable. Opened the hood and found that again, antifreeze was all over the inside of the engine compartment, have come out of the recovery tank. I think it's just time to send this car to the junk yard. I don't think so. I think it is time to have the mechanic remove the intake manifold and inspect/replace the gaskets - based on my earlier post(s), I am betting that is the problem. You have too much invested in the car to throw in the towel now. I know you're right, I do have way too much $$$ and time invested in this car to just toss it away. I just wish I could find a mechanic that knows what the heck he's doing. Why did he replace the thermostat?, didn't you have the thermostat replaced during the last overheating fiasco? You need to just bite the bullet at this point and have the intake manifold gasket replaced, it needs to be eliminated. Has anyone pressure tested the cooling system? You have said that your oil in the valve covers looks like honey, that is an indication that water is getting into the oil. The GURU said OFTEN that the intake was a prime spot for leaks on this engine. The Guru also said I should check the water pump. If you really want to make people safe drivers again then simply remove all the safety features from cars. No more seat belts, ABS brakes, traction control, air bags or stability control. No more anything. You'll see how quickly people will slow down and once again learn to drive like "normal" humans. Link to comment Share on other sites More sharing options...
BodybyFisher Posted January 26, 2008 Report Share Posted January 26, 2008 Check the water pump for what?, that its turning? That the impeller came off? The water pump was replaced 2/06 because it was leaking, <a href="http://caddyinfo.ipbhost.com/index.php?sho...p;hl=water+pump" target="_blank">http://caddyinfo.ipbhost.com/index.php?sho...p;hl=water+pump</a> I am not sure why you said, the guru said to check the water pump, is that sarcasm? Reading words, sometimes sarcasm is hard to detect, are you doubting that the intake manifold gaskets are bad by making that statement "The Guru also said I should check the water pump"? The cooling system needs to be pressure tested. Does the upper radiator hose get hard when the engine is at normal operating temp? When you take the car to a new mechanic make sure he knows the history and what was done the last time. Does the oil in the valve covers look like coffee or honey color? Here is the thread where you went to Brogan 10/06, you had temp sensors and related wiring, radiator, thermostat and coolant flushed. Supposedly it was holding pressure at this point BUT at some point you had TRACER DYE in the oil. There was a statement about checking the water pump also, but I doubt its your water pump I can not see how a waterpump could cause intermittant overheating. Here is some of the history <a href="http://caddyinfo.ipbhost.com/index.php?sho...30&start=30" target="_blank">http://caddyinfo.ipbhost.com/index.php?sho...30&start=30</a> This is either the piston sleeves leaking at the o-ring, the intake seals/gasket leaking at the coolant jacket, a collapsing lower radiator hose or a head gasket, PLEASE have it pressure tested. Find a radiator shop that can pressure test the cooling system, all you want are the results, just the test. Check for coolant in the OIL, either by the dye method or by analysis (Blackstone). If there is coolant in the OIL, its either the sleeve seals, intake gasket or head gasket. I am not sure if you are ignoring me or not, but FROM the BEGINNING, I said DIAGNOSIS needs to be done, NOT replacing of thermostats. DIAGNOSIS 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...
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