Having problems with your Cadillac Seville ?

Hello, I replaced starter and "cleaned up all the intake and egr passages on my 94 seville.New valve cover gaskets and new radiator.Looks nice,..but,... Watching the temp gauge climb to 114 degrees scares me.Old radiator had jello like substance in it. I was going to drain the new antifreeze that I just puty in. Then flush the system with a strong cleaner. Then I considered wiring in some kind of dirrect fan switch onder the dash. Will this mess up and confuse my PCM computor and set a bunch

Posted / edited by AnonymousUser on : 21-09-2020

Answers :

Hello, my name is Ben. You have probably found out the "jello" like substance is what happens when you mix the old green anti-freeze with the new orange colored coolant. When mixed the two have a tendency to jell. Flushing with a strong cleaner might work, you may also consider "back-flushing" the system. I would also remove the water pump and make sure there is no clogging inside it. As for installing a bypass switch for the fan, it shouldn't effect the PCM in any way. Also a cooler thermostat won't hurt either as long as the engine reaches normal operating temperature.
These engines normally run around 200 deg ferheneit. 114 deg f is really cold and can cause excessive fuel consumptions as well as plugging the catalytic converter. Sounds like you have quite a grasp on the situation and are doing good. The "jello like substance" you encountered is most likely the mix of Dexcool and regular "green" coolant. These must not be mixed!! It would not hurt to chemically flush the system and use which ever coolant you prefer at that point. Make sure you mix the coolant with bottled distilled water. This will give a long life and keep down corrosion and electrolosis. Let me know if you need anything else.
Repair Help & Product Troubleshooting for Cadillac Seville

Tips for a great answer:

- Provide details, support with references or personal experience .
- If you need clarification, ask it in the comment box .
- It's 100% free, no registration required.

Suggested Questions/Answers :

Loading ...

  • Start your question with What, Why, How, When, etc. and end with a "?"
  • Be clear and specific
  • Use proper spelling and grammar
all rights reserved to the respective owners || carrestorationshop.com || Terms of Use || Contact || Privacy Policy
Load time: 0.0095 seconds