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Cadillac Repair/Warped /cracked heads & valves
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Question
I have a 1998 Cadillac Deville D'Elegance. How would I know if any of the valves are messed up or a head is warped or cracked.
Hello,
i have stressed so many times, Cadillac aluminum egines cannot be overheated. For close ti 30 years (since 1982) Cadillac evidently did not care about repeat customers because there engines could never be run hot.
Here is your problem-- heads can be checked at a machine shop. What if you mill the heads, put it back together and find more problems? Or if the issue that caused it to overheat returns and blows your new head gaskets? What if the block is cracked?
You can't go with a used engine because it could be potentially junk too.
You really have a problem here. A new GM long block is about $4k installed. Even if you change the engine, is the overheating problem fixed.
Please do not ask me for the diagnoses of Cadillac engine overheating. The list is huge!
Like it or not, you have a huge problem and the options are grim.
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Rob Painter
Expertise
Alarm system questions cannot be answered on this forum. These systems are not what I can answer. Without being physically at the vehicle and not knowing what kind of electrical service has been done on the vehicle, there is no possible way to give an accurate answer over the internet. My expertise is in Ignition/key based anti-theft systems. These issues include GM VATS (resistor chip in key blade) PASSLOCK (MRD)-ignition lock rotation based, no special ignition key and the PKIII Transponder (computer chip in key) systems. These systems are not alarm based and are integral with the starting of the engine. This is why I cannot diagnose alarm problems without physically looking at the vehicle: Alarm systems are a completely different annimal than ignition key/lock based anti-theft system. Many alarm questions come from vehicles 10 years old, and since older, many hands that had been involved over the years.I am an expert in all GM factory (ignition/key based)systems. Alarm system questions pose to many situations beyond my knowledge as to what has been done to the vehicle over the years. Some guy may have actually wired the stereo into the alarm system. Who knows? Over my past 30 years in vehicle wiring repair, I have seen unbelievable wiring disaters done by guys that consider themselves "mechanics." I have seen stereos and alarms intalled using surgical tape. I have seen modules burn up, un-fused circuits, wiring jambed between the doors and even lamp cord used for a starter kill. To answer alarm questions over the internet without examining the vehicle is like asking; What does it take to remove a dent?
Experience
Education/Credentials-ASE certified. 11 years with a GM dealer and 17 years with a repair facility dealing with only the repair of theft recovered vehicles.
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