Northstar Engines and System Technical Discussion Discussion, NGK Spark plugs & coolant level message - 2003 Deville in Cadillac Engine Technical Discussion; I'm looking at NGK V-Power (Part # 3951) from Advance Autoparts as replacements for my 2003 Deville I just bought. ...
I'm looking at NGK V-Power (Part # 3951) from Advance Autoparts as replacements for my 2003 Deville I just bought. Are these good spark plugs for this engine?
Also - I'm getting a "Check coolant level" message. The level is fine so I'm thinking the sensor is clogged up and unable to detect properly - This happened on my Pontiac Grand Prix GTP because of the Dex-cool antifreeze clogging things up. How easy is it to drain the cooling system (ie. Is there a drain plug or is it done by disconnecting a radiator hose?) and are there any special procedures that need to be followed when refilling (like on the 3800 series 2 on the Grand Prix)?
Cooling system drain/fill/purge line checks in Tech Tips and in here - lots of times. The system is a royal PITA to drain due to the inaccessible location of the drain plug in the bottom of the driver's side radiator end tank. Refill takes about 10 - 12 quarts of 50/50 coolant. Mix your own. Proper level is halfway full in the surge tank, cold only.
Sometimes the coolant level sensor magnetic float hangs up and can be freed with surge tank removal and soapy water agitation and good rinse. Other times it requires tank replacement. About $57, shipped.
Automobile(s): White Diamond '03 DHS (with DTS floor shift)
Re: NGK Spark plugs
Dex doesn't clog anything up. It's simply a failing level sensor. No need to drain the system (unless you are due for a coolant change). Simply siphon the surge tank and then change it. Just did mine a few weeks ago.
radiator drains ARE a pain. I made mine a bit easier by using an old broom handle. cut it to approx.5-6 inches or
whatever works for you. take the cut end and cut a groove in it wide enough for the plug. use it for an extension.
If you are going to collect the coolant, don't bother use that time to find your garden hose. something square works also but don't be tempted to us a tool ,just your hand, not both.you'll see