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Found 7 results

  1. Backstory: I live in Hawaii and just bought my very first Cadillac for $600 with about 83K miles on it from the Honolulu airport area. Just needed a temporary car to get me to work and back. The person selling the car said it just needed some fixing but runs fine. His friend gave it to him because he had to move to the mainland. The seller's reason for selling was he had no space to store the vehicle. The car was selling for around $1000 at first then drop to $600 because the "engine got hot but not overheated". With the help of family members, we tried to get it over the Likelike Highway which is a reasonably difficult hill. However, the car never made it there because it overheated. We did try to keep topping it off with an all-vehicle Preston yellow container green coolant but no good. We ended up towing it to my living location where it would sit until it could be sent to the mechanic shop. Current Mechanic Coolant System Fixes and Replacements: -The old thermostat was cleaned but not replaced. -New radiator and radiator fans installed. March 13th-14th, 2023 Test-Run Analysis: When I picked it up on the 13th of March from the mechanic shop, they said to drive it for a few days and then let them know. They said it stayed around the 2nd tick from the 12 o'clock position but didn't go to H anymore. Drove it around in the afternoon for about 45min trying to see how well it now handles. Stay around the two ticks from the H but only once went over. Parked it at home and let it sit for a bit. Went back out at night to see if it would make a difference with the cool night air. The hot air actually kicked on for a little bit and the temperature gauge stayed at the 12 o'clock position. However, it didn't last too long before it went back to cool and the temperature gauge went back to two ticks from H. Barely made it home because it was going over but didn't go to the red zone. I'm thinking about replacing the thermostat and water pump myself to see if that fixes the problem. Current Condition of Vehicle for Possible Clues: Suspecting possible accident from the front. The left headlight is newer and not fitted in properly as the right headlight is. The blinkers just stay a solid yellow when turned on. The hood looks like a replacement sprayed over incompletely to match the color but with no clear coat. The front bumper is pointing slightly down with a small cracked hole on the side of the bumper. ABS, Traction Control, and Airbag lights stay on. The new radiator doesn't fit properly on its left mounting side piece. No coolant flush yet just been topped off after some parts were replaced or cleaned. I hope this also helps in some way or form.
  2. I have a 2008 DTS that is overheating due the fans not operating correctly. The fans do not come on. Only 1 fan will come on if you run the AC, the passenger side fan runs with the AC on, the driver side fan does not run at all. I replaced the entire fan assembly (2 fans in the assembly) same thing happened with the new fan. I checked the relays, they tested good, I replaced the relays just for the sake of it, fuse is an inline fuse you can view, it looks good, put a reader on it tested good, coolant levels are good, replaced thermostat for good measure. What can the issue be? why is the driver side fan not coming on, and why is the fans not running without the AC on? This is driving me crazy.
  3. I have a 96 Cadillac Deville that is overheating and blowing white smoke out of the tail pipe as well as spitting water out of the tail pipe. Any help would be greatly appreciated. Has new water pump, new thermostat, no leak, etc.
  4. It is important to note that you will see wider fluctuations in engine temperatures with the AC off because the fans cycle on at 229 and off below 216 with the AC off. This will be true if the AC is disabled due to low refrigerant. With the AC on and operational, the fans are on low full time. The following details the cooling fan operation. The PCM will command fan operation when: Low Speed Fan Operation Engine coolant temperature exceeds approximately 106°C (229°F). Transmission fluid temperature exceeds 150°C (302°F). A/C operation is requested. After the vehicle is shut OFF if the coolant temperature at key-off is more than 151°C (304°F) and system voltage was more than 12 volts. The fans will stay ON for approximately 3 minutes. The fans will switch from low to OFF when the coolant drops below 102°C (216°F). High Speed Fan Operation Engine coolant temperature reaches 112°C(234°F). Transmission temperature is more than 151°C (304°F). When certain DTCs set. The fans will switch from high to low (except DTCs set) when the coolant drops below 106°C (229°F).
  5. Hi All, I haven't been on the forums for a while - life has been busy, and the DTS has been running great (around 105k miles)! Until tonight. I pulled into the driveway after a 25 minute drive home (80°F ambient temperature), windows down (A/C off), I got the message "AC off due to high engine temp" or something similar. After I turned off the car, both rad fans continued to run for a couple minutes. After dinner, I went back outside and noticed coolant under the driver's side of the car (approximately below the water pump). I plugged in my OBDLink MX and turned on the ignition to check for codes - nothing showed, and coolant temp around 160 as reported by the OBD dongle. I turned on the car and verified that the pump belt was in tact and driving (it was), the temperatures quickly rose to 220 (fans on), and I shut off the car shortly after. I'd also cranked the heat in the car but the air didn't feel hot at all. Based on the location of the coolant dripping, I initially assumed the pump was bad, but when I searched for info on failed pumps, most posts talk about a broken belt. There appears to be coolant in the surge tank but I haven't opened it yet. Do you have any advice to help me troubleshoot this issue? Thanks,
  6. Hello folks I own a 1999 Cadillac Deville and I was told by my mechanic that I have a blown headgasket... We have tried using blue devil headgasket sealer which worked for about 1 day and then the overheating appeared again. I was quoted by my mechanic that the job to fix the engine would cost anywhere between 2500-5000 dollars depending on the severity of the damage. Coolant was replaced thermostat was replaced... unfortunately this did not fix the issue I rely on my Cadillac heavily for work and I need a inexpensive fix and fast one ASAP that will last me and not pillage my bank account so that I can continue working. if anyone has any advice on how and what I should do thanks...
  7. Have a 97 Deville, had been leaking coolant slowly, after engine had warmed up it was dripping by passenger front tire ( down the boot area), also associated with? AC would only blow hot air. Took it in, was told that I needed a new thermostat and a backflush told them to do it if it would fix problem. Now over a 20 mile trip had to pull over 3 times as engine was too hot to drive, had to add coolant as was low. Is it possible that they put a bad thermostat in or should I be worrying more that either they screwed something up when they worked on it or a new problem has arisen? I took it back, they said the fan was not coming on, and they replaced 3 relays. Also stated they ran power to the fan and it works. Claims it may have to do with the ECU and they aren't qualified to check any further than they have. Any suggestions? Thanks
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