will running tap water in coolant system in 2004 pontiac grand prix cause it to overheat?

Asked by Jul 29, 2014 at 06:34 PM about the 2004 Pontiac Grand Prix GT1

Question type: Maintenance & Repair

will running tap water in 2004 pontiac grand prix cause overheating

5 Answers

90,635

Just plain water has a boiling point of 212 degrees adding a pressure cap will raise that some. Antifreeze has a much higher boiling point. Are the cooling fans running properly? Radiator's air flow not restricted?

90,635

Found your other post, it is a big no no to put any block seal in your system as it causes more problems than it cures, it radiator is usually what gets plugged up followed by the heater core, then smaller water passages in the engine. If it got that hot then it most likely blew the head gasket or cracked the head or heads, could have even blued the block. The only way to tell for sure is have a good shop do some engine block testing.

605

I have run plain water in the summer without a problem, but it is not the best ideal. Make sure you get some anti-freeze in there by fall. Do not use Dexcool!!!!!

3,825

Plain tap water is fine but it needs to be mixed with coolant as has already been said. This is important year round. If you're going to switch from the factory Dexcool your entire system needs to be properly flushed first to remove all of it as it is not compatible with other types of non- dexcool coolant. GM still uses it in their cars.

4,525

Tap water is actually better at transferring heat than 50/50 antifreeze, but it will boil at a lower temperature than the mix, and that can cause problems. So as a temporary emergency fix, tap water is okay. But do not leave it in the engine. The minerals in tap water will corrode internal engine parts and can quickly clog up small water passages with deposits. When I say 'quickly' I mean within a few weeks. Some people use distilled water to avoid this, but the anti-corrosion additives in anti-freeze are a vital part of the cooling system and shouldn't be neglected.

Your Answer

Add photo

Related Questions

Grand Prix

Looking for a Used Grand Prix in your area?

CarGurus has 2,844 nationwide Grand Prix listings starting at $1,995.

ZIP:

Search Pontiac Grand Prix Questions

Pontiac Grand Prix Experts

#1 Js08016
Js08016
Reputation 4,110
#2 Tom Demyan
Tom Demyan
Reputation 2,760
#3 munron
munron
Reputation 2,150
View All

Related Models For Sale

Used Chevrolet Impala
513 Great Deals out of 28,995 listings starting at $1,100
Used Pontiac Bonneville
540 listings starting at $3,699
Used Chevrolet Monte Carlo
13 Great Deals out of 1,390 listings starting at $1,995
Used Pontiac G6
52 Great Deals out of 4,164 listings starting at $699
Used Pontiac Grand Am
1,218 listings starting at $950
Used Pontiac GTO
5 Great Deals out of 432 listings starting at $5,995
Used Ford Mustang
361 Great Deals out of 46,750 listings starting at $1,500
Used Chevrolet Malibu
810 Great Deals out of 81,104 listings starting at $995
Used Honda Accord
711 Great Deals out of 86,747 listings starting at $1,250
Used Chrysler 300
335 Great Deals out of 20,331 listings starting at $1,000
Used Nissan Maxima
279 Great Deals out of 26,273 listings starting at $1,990

Used Cars For Sale