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Northstar cooling system expert
Mark Carrington posted an answer for this 1997 Cadillac DeVille:
"The most common overheating problem with the Northstar engine is a blocked purge..."
Mark Carrington posted an answer for this 2001 Cadillac Sts:
"Have an oil change every 3000 miles by about 2000 miles it is allready a quart to 2 low..."
"What you describe is normal for the Northstar engine, they do tend to burn oil. It sounds..."
Mark Carrington posted an answer for this 2001 Cadillac DeVille:
"COOLANT LEAKS ONLY WHEN CAR IS BEING DRIVEN. NO LEAKAGE ON GARAGE FLOOR. INTERMITTANT..."
"From the way you describe it, It is likely the pressure cap on the surge tank..."
Mark Carrington posted an answer for this 1999 Cadillac DeVille:
"My car continues to over heat and I have changed the termostac and good anti freeze. What..."
Mark Carrington posted an answer for this 1998 Cadillac DeVille:
"98 deville 32 valve North Star OVERHEATS after 33 miles of drive ?? does not overheat in..."
"shut car off and remove keys,headlights will go off and come back on and now it's..."
"just bought this beautiful car, but drove 30 miles on the highway and it is over heating...."
"Yes,it is quite common on the Northstar engine, usually due to lack of cooling system..."
"runshot. replaced raditor,thermostat still runs hot"
"can a worn out coolant cap cause overheating"
"There is no radiator cap on the Northstar engine. The only cap is on the surge tank (or..."
"cadilac deville 2001 runs hot when you get into stop and go trffic."
"I Have a 1997 cadillac sts, i fixed the head gaskets, and replaced the thermostat. Also i..."
"I have a 1999 Cadilac Deville that I replaced a bad radiator, found it had the wrong..."
"98 Deville Northstar V-8 - can you rebuild these engines - I've heard when you have..."
"If you have overheating problems with this engine, don't assume it's the head gaskets...."
"my 1998 cadillac deville overheats only when i turn off the a/c"
"Hi, my 1998 Cadillac DeVille is overheating for no apparent reason. It is in the shop and..."
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