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Bill Roberts · 07-07-2003, 08:57 AM

These are the things that cause overheating.

Each one needs to be checked systematically.

1. Flow (clogged radiator vanes, radiator needs rodding out)
2. Blockage of air (bugs, debris)
3. Improper pressure (bleed valve open, bad radiator cap)
4. Electric fan not coming on with AC.
5. Dirty water, rusty.
6. Bent or kinked Hose.
7. Faulty head gasket (check compression)
8. Dirty or fouled Oil
9. Running without antifreeze (antifreeze raises the boiling point)
10.Faulty thermostat.
11.Bad heater core valve
12.Faulty o2 sensor (this is a long shot..but can happen)
13.Bad water pump (unlikely, unless leaking)
14.Low fluid level
15.Air in system (needs bleeding)
16.Blocked radiator hoses
17.Blockage or clog in the block
18. Faulty AC compressor and sealed system causing the condenser to overheat.
19.Slipping water pump belt.
20.Dragging brakes

It is one or more of the above. If all of that is proper, you will not overheat.

Another thing...

If it is automatic, your transmission fluid shares part of the radiator and you need to add a stand alone transmission cooler.

The A/C condenser is HOT when used and right in front of the radiator. IT is normal to expect some temperature rise but never past half way on the needle. Your car should be able to idle in 40C heat for 30 mins with AC on without overheating.

07-07-2003, 08:57 AM	#2
Bill Roberts Zilvia FREAK! Join Date: May 2003 Location: S FL. Posts: 1,538 Trader Rating: (0)	These are the things that cause overheating. Each one needs to be checked systematically. 1. Flow (clogged radiator vanes, radiator needs rodding out) 2. Blockage of air (bugs, debris) 3. Improper pressure (bleed valve open, bad radiator cap) 4. Electric fan not coming on with AC. 5. Dirty water, rusty. 6. Bent or kinked Hose. 7. Faulty head gasket (check compression) 8. Dirty or fouled Oil 9. Running without antifreeze (antifreeze raises the boiling point) 10.Faulty thermostat. 11.Bad heater core valve 12.Faulty o2 sensor (this is a long shot..but can happen) 13.Bad water pump (unlikely, unless leaking) 14.Low fluid level 15.Air in system (needs bleeding) 16.Blocked radiator hoses 17.Blockage or clog in the block 18. Faulty AC compressor and sealed system causing the condenser to overheat. 19.Slipping water pump belt. 20.Dragging brakes It is one or more of the above. If all of that is proper, you will not overheat. Another thing... If it is automatic, your transmission fluid shares part of the radiator and you need to add a stand alone transmission cooler. The A/C condenser is HOT when used and right in front of the radiator. IT is normal to expect some temperature rise but never past half way on the needle. Your car should be able to idle in 40C heat for 30 mins with AC on without overheating. Last edited by Bill Roberts; 07-07-2003 at 10:14 AM..