Here is the engine with the crossover housing removed. I think perhaps the idea was to let the Seville become the top of the line. Also on top of that zero sales pressure. All Replacement brand items are backed by 1-year, unlimited-mileage warranty. Sell it quick if you do not have the money to fix it with, which is very costly. Definitely an underrated designer for his personal work in the 50s and 60s along with Jerry Hirshberg.
A faulty thermostat might not open, meaning coolant won't flow. Do you have an oil leak on your Northstar 4. The weather is mild: overcast, somewhat humid and about 74°. Inside also was a triumph of design, with a fantastic instrument panel that again looked like a great blend of American and International design influences. Being a follower is much worse.
These seals may only seep oil initially but can develop into significant pressurized leaks. I have a 97 Deville. From what I hear all northstar's of this era will have this problem at some point and the problem was not fixed until 2001 or so. Thank goodness I bought the extended warranty. Saw fluid around the water pump and replaced it. This can be diagnosed with a scanner. A leaky head gasket can be sealed temporary using a sealant.
There are several common areas these engines will leak from. My '97 had a leak there, but it was a very minor seepage, so slow that I never got around to replacing it. The video above shows you where the coolant reservoir, hoses and connections on your 1992 Seville Base are located and the steps needed to fix minor coolant leaks. There are plenty of hints of the Voyage show car in this car. Professional and knowledgeable staff; clean and organized shop. Still mine went to 135k before I sold it.
Bloated Broughams, dowdy DeVilles and comical Cateras proved that the wreath-and-crest brigade were still decidedly out-to-lunch. So my opinion is that overheating the engine may weaken the alloy in the block so that the bolts fail. Lately I've been sliding a sheet of white plastic under the car to catch the drips overnight in hope of identifying the fluid. It regards the head gaskets breaking at an alarming and consistent rate for the past 10 years! The complaints are organized into groups with data published by vehicle, vehicle component, and specific problem. Sold it and the gasket is still on my work bench. A leaky head gasket is difficult to diagnose because you won't find an external leak.
The following is a helpful tip. The car had 40k miles on it. The current and failure mileages were 57,813. Again if you own a corvette or even a cadillac save yourself the trouble calling around. Not even trying to lead.
There's a reason these guys hold a 5 star rating. Did engine leak down test and cyl 3 is leaking 30% the rest are normal and Compression test is also normal. Anyway, it's a very delicate procedure getting the later 2000-up crossovers on since the throttle body housing is part of the crossover on the later northstar engine. In many 1992 Sevilles, a coolant leak can be a precursor to a hose bursting or flying off, which severely limits how far you can drive before your engine overheats. Engine coolant which is also called anti-freeze or antifreeze circulates through your Seville's engine and keeps it from overheating. Unfortunately he lives in a rural area and there is no local cadillac dealership for diagnostic repairs. Then a bit later it wanted more coolant and they knew something was not right.
The Northstar engine series is a family of automobile engines designed by General Motors. The gaskets simply will not last forever. It was supposed to be able to run for a short distance with no coolant without melting down and it would do that. Lying on the ground beside the car, I can see it dripping from two different places: the first is slightly forward of dead center of the car right along the driveshaft, while the other is just forward of the front axle. I've also had it to two separate shops a total of five times specifically to find the remaining leak that no one seems able to track down. Something like the Holden Commodore variant, and it could have had the Northstar or even the 4.
I am getting alittle worried as I rack up th mileage reading the past entries, I too burn oil at about 1 qt. Suspension parts wore out quickly, which led to an obnoxious clunky rattle. Luckily for me I keep my engine bay quite clean it helps to determine leaks easier but it just so happens it was in the area that you describe. Finally, voltage spikes from the alternators affected all cars with Northstar series engines, causing lights to randomly dim at night and giving them a penchant for bliwing bulbs — something shared by the Atlas inline engine series around the same time. It's a very powerfull engine and if kept up proper, smooth as silk. Rust holes had developed in it after 13 years. Often times these crossover seals like to leak when sitting, and when they get bad like these they leak all the time, causing people to refill the coolant often.
Upon further investigation, you appear to be right. She provided both physical and electronic documents, and even called me an Uber for a ride home! But coolant needed replacing at some point which they did without checking into how come. Take your vehicle to a professional mechanic for assistance. It also helps if you put the lowers in with the bolts installed as clearance with the transmission is somewhat tricky and they have to be in there anyway or they won't fit once the crossover is in. The contact maneuvered to the side of the road to inspect the vehicle and noticed a substantial amount of coolant leakage underneath the dashboard and the front passenger floor area. The problem turnned out to ba a blown head gasket.