i have a 1995 pontiac gran prix gtp 3.4 motor well ive replaced the water pump the thermostat and ive unscrewed the bleeder nut on the hose coming from rad to motor and i still cant get the coolant to circulate help me somebody please im going crazy

Asked by Jan 06, 2014 at 09:55 PM about the 1995 Pontiac Grand Prix 2 Dr GTP Coupe

Question type: Maintenance & Repair

i dont no what else to do to make it circulate again it did befor not now

3 Answers

4,505

Is the t-stat facing the right way, and is it the proper temperature t-stat? There are lots of things that can stop the coolant from circulating but the main culprit is the t-stat. Make sure you don't have any collapsed hoses. You might want to try running the engine with the t-stat removed. If there's still no circulation, you've got some sort of major blockage in the water jacket or passageways. I'm guessing the car was overheating, which led you to replace those parts? You can try a power flush and see what comes out, but if you've got a serious blockage it might require pullling the freeze plugs to see what''s going on.

3,705

Good advice from Norm although I think a major blockage in the block is unlikely. More likely thermostat, water pump or a bunch of air in the system that won't move. For some reason modern engines are tough to fill and bleed the air out of. A lot of mechanics have a vacuum tool they use when filling modern cooling systems. You might need to get it professionally done by someone so equipped.

I'm a qualified ASE Master auto tech at a local shop and I'd have to say that both these gentlemen are correct. The first and primary culprit would be the thermostat. Did you replace the thermostat when you installed the engine into your car? Also, it's VERY rare but , altho it's possible that if you don't find the problem in the thermostat the pulley on the water pump may have come loose from the vanes and isn't moving your coolant. Also when the engine is running are any of your coolant hoses collapsing when the car is warmed up? What do you know of the history of your replacement engine I've experienced that a water pump with the vanes going the wrong direction will cause an overheating issue. Finally backflush your cooling system. It should be done every 100,00 miles. Then check your cooling system stem to stern. There's really not that much to it.

Your Answer

Add photo

Related Questions

Grand Prix

Looking for a Used Grand Prix in your area?

CarGurus has 3,715 nationwide Grand Prix listings starting at $1,100.

ZIP:

Search Pontiac Grand Prix Questions

Pontiac Grand Prix Experts

#1 Js08016
Js08016
Reputation 3,980
#2 Tom Demyan
Tom Demyan
Reputation 2,660
#3 munron
munron
Reputation 2,070
View All

Related Models For Sale

Used Chevrolet Impala
792 Great Deals out of 34,371 listings starting at $799
Used Pontiac Bonneville
5 Great Deals out of 653 listings starting at $1,599
Used Chevrolet Monte Carlo
15 Great Deals out of 1,658 listings starting at $2,000
Used Pontiac Grand Am
1,644 listings starting at $1,995
Used Ford Mustang
363 Great Deals out of 44,352 listings starting at $1,000
Used Chevrolet Camaro
283 Great Deals out of 38,314 listings starting at $1,250
Used Nissan Maxima
345 Great Deals out of 25,215 listings starting at $1,400
Used Honda Accord
814 Great Deals out of 81,559 listings starting at $899
Used Nissan Altima
1,088 Great Deals out of 82,556 listings starting at $670
Used Jeep Grand Cherokee
840 Great Deals out of 68,654 listings starting at $864

Used Cars For Sale

2008 Pontiac Grand Prix For Sale
13 Great Deals out of 463 listings starting at $1,200
2007 Pontiac Grand Prix For Sale
5 Great Deals out of 540 listings starting at $3,250
2006 Pontiac Grand Prix For Sale
8 Great Deals out of 605 listings starting at $1,999
2005 Pontiac Grand Prix For Sale
451 listings starting at $5,900