what would cause coolant not to come out motor into upper radiator hose

Wadd Sims

Asked by Apr 23, 2016 at 10:08 AM about the 1990 Pontiac Grand Prix 4 Dr LE Sedan

Question type: Maintenance & Repair

3 Answers

Wadd Sims

Just put new water pump on

Tom Demyan

The car needs to be running to get it up to temperature first, then the thermostat can open and the coolant can flow through the upper hose into the radiator.


And if the engine is already running which I'm guessing it is, that's a sign of air trapped in the system. There's a bleeder valve near the thermostat that is used to let out the air. I've also read that it helps to have the car parked facing uphill while filling and bleeding the system. Getting the air out does seem to be a bit tricky on these engines, but its imperative that you do or you will overheat and damage other things.

Your Answer

Add photo

Related Questions

Grand Prix

Looking for a Used Grand Prix in your area?

CarGurus has 4,404 nationwide Grand Prix listings starting at $1,800.


Search Pontiac Grand Prix Questions

Pontiac Grand Prix Experts

#1 Js08016
Reputation 3,680
#2 Tom Demyan
Tom Demyan
Reputation 2,450
#3 munron
Reputation 1,950
View All

Related Models For Sale

Used Pontiac Bonneville"
867 listings starting at $2,950
Used Pontiac Grand Am"
1,981 listings starting at $1,995
Used Ford Mustang"
770 Great Deals out of 41,446 listings starting at $900
Used Chevrolet Camaro"
855 Great Deals out of 39,085 listings starting at $2,650
Used Nissan Maxima"
491 Great Deals out of 24,113 listings starting at $800
Used Pontiac Firebird"
12 Great Deals out of 893 listings starting at $2,900

Used Cars For Sale

2008 Pontiac Grand Prix For Sale
18 Great Deals out of 555 listings starting at $2,495
2007 Pontiac Grand Prix For Sale
601 listings starting at $5,500
2006 Pontiac Grand Prix For Sale
6 Great Deals out of 791 listings starting at $2,950
2005 Pontiac Grand Prix For Sale
6 Great Deals out of 503 listings starting at $1,995