It could literally be anywhere. But usually, the radiator sludges up first, because it's cooler than other areas, allowing corrosion byproducts and chemicals in the coolant to plate out onto the radiator tubes.
Then again, there may be NO clog. It may be that your water pump impellar is so eroded from cavitation and / or so corroded from improper coolant chemistry that it can no longer pump enough coolant to keep the engine cool.
The only way to be sure is to do a total tear-down of the engine and coolant system, and inspect everything.
Trouble code P1151 means: Coolant Path Clog Up for Coolant Heat Storage System
what is the question? why it would overheat???? if so: because -thermostat is stuck closed -or no coolant -or head gasket leak -or coolant system leak -or bad water pump -or clog in coolant system -or ......
No, there are different types of coolant though so make sure you use/refill with something that is compatible with the liquid already in your system. If you use two different types of coolant they may clog up or end up not functioning as it should.
you probably need to flush the coolant system. GM claims that the coolant is good for a ridiculous number of miles, but it is not so. The coolant breaks down and forms large clumps which will clog up the heater core. You may need to flush several times to get it all out.
Possible reasons for overheating: Low or out of coolant Clog in cooling system Thermostat failure Cooling fan not operating water pump failure
Overheating is always caused by a problem with the cooling system. you may have a leak, or a clog, or air trapped in the system. check there is no oil in the coolant, and the coolant level is sufficient. if there is oil (it will look creamy rather than translucent) or the level is low, bring it to a garage for inspection and repair.
Yes. Can clog coolant passages in your engine and other areas.
Coolant may not be moving through the system fast enough. Possibly a bad pump or a clog somewhere.
It could be a couple of things. The coolant system could be over full. There could be a clog in the radiator. Or possibly the thermostat but not likely. also, the ford coolant tank is pressure sealed, if the cap to the tank has a defective seal, it WILL overflow when you stop your car, or whenever the pressure builds
1999 SL2 should have what is known as DEXCOOL in the cooling system. It's a GM special coolant that you can obtain at any Autozone or your preferred parts provider. The color in this should be a pinkish color if not orangish. Hope this helps you. DO NOT USE GREEN ANTIFREEZE/COOLANT IN YOUR ENGINE OR MIX COLORS OF COOLANT! YOU WILL CAUSE A GELATIN LIKE SUBSTANCE TO FORM, AND POSSIBLY CLOG/RUIN YOUR COOLING SYSTEM.
By bleeding the coolant system.
Manual calls for DEX-COOL It actually depends on what type of coolant is in it now. If it's green, it's been traded out with normal coolant. If it's reddish, it still has DEX-COOL in it. NOTE: you should never mix the two types together. DEX-COOL and normal coolant can clog up the system if mixed together. Some places sell a type that is safe for either type of system, but i'd go with whichever is currently in your system, $5 for a gallon of regular coolant or $8 for DEX-COOL but it improves expectancy of your heating and cooling system (which the venture sure can use)