Ok after many SHO Forum and Google searches I havent come up with anything. Talked to a few mechanics who were obviously unfamiliar with the SHO and pointed me to bad head gaskets. I even talked to tech support @ SHO Shop and what he told me makes the most sense. Probably got a leak somewhere thats not visible.
Anyway here it is. Car is a '92 MTX. Replaced water pump, t-stat with 180 from autozone, new ford oem radiator cap 16lb ,new dual core radiator. Car is running hotter than it did before I replaced all those parts. Top and bottom hoses still need to be replaced. When the car is hot the top hose is fully pressurized and swelled up to the point it looks like it could bust.
So here is how it's acting.
When i start it up when the engine is cold and start driving by jumping right on the freeway or nonstop cruising where there is constant airflow, even on a hot day (100 +) the needle does not go past the quarter mark on the guage but when i hit stoplights or stop and go traffic, it takes about 10 minutes for the needle to start rising up the guage to the point of no return. The highest it gets is a little above the N but never goes to the last mark before it gets out of the normal range so in other words it doesnt overheat according to the guage just runs way too hot.
Now when the car is this hot and i jump on the freeway and get to 80 mph,90 or 100 mph all the air being forced into the engine bay brings the temp back down to between 1/2 to 1/4 mark. The fan kicks on everytime it gets to the halfway mark but never brings the temp down.
I do smell coolant in the cabin when the car is running hot.
There have been a couple occassions when the coolant boiled over out of the radiator to overflow but this was with an autozone radiator cap and hasnt done that yet with the ford oem cap.
There is no coolant in the oil and vise versa and no visible leaks which leads me to think the leak is either internal or external and being burned off by the exhaust. there is no white smoke out of tailpipes at idle or part throttle though there is a little smoke during full throttle.
I would think that if the head gasket was bad the car wouldn't run as strong as it does and that the engine would overheat no matter what the driving conditions are. next step is a cooling system pressure test but can anyone chime in on what the problem could be!
Anyway here it is. Car is a '92 MTX. Replaced water pump, t-stat with 180 from autozone, new ford oem radiator cap 16lb ,new dual core radiator. Car is running hotter than it did before I replaced all those parts. Top and bottom hoses still need to be replaced. When the car is hot the top hose is fully pressurized and swelled up to the point it looks like it could bust.
So here is how it's acting.
When i start it up when the engine is cold and start driving by jumping right on the freeway or nonstop cruising where there is constant airflow, even on a hot day (100 +) the needle does not go past the quarter mark on the guage but when i hit stoplights or stop and go traffic, it takes about 10 minutes for the needle to start rising up the guage to the point of no return. The highest it gets is a little above the N but never goes to the last mark before it gets out of the normal range so in other words it doesnt overheat according to the guage just runs way too hot.
Now when the car is this hot and i jump on the freeway and get to 80 mph,90 or 100 mph all the air being forced into the engine bay brings the temp back down to between 1/2 to 1/4 mark. The fan kicks on everytime it gets to the halfway mark but never brings the temp down.
I do smell coolant in the cabin when the car is running hot.
There have been a couple occassions when the coolant boiled over out of the radiator to overflow but this was with an autozone radiator cap and hasnt done that yet with the ford oem cap.
There is no coolant in the oil and vise versa and no visible leaks which leads me to think the leak is either internal or external and being burned off by the exhaust. there is no white smoke out of tailpipes at idle or part throttle though there is a little smoke during full throttle.
I would think that if the head gasket was bad the car wouldn't run as strong as it does and that the engine would overheat no matter what the driving conditions are. next step is a cooling system pressure test but can anyone chime in on what the problem could be!
