Radiator Goop

Asked by Mar 08, 2016 at 06:43 PM about the 2004 Pontiac Grand Prix GT1

Question type: Maintenance & Repair

I bought a USED 2004 Pontiac Grand Prix GT 3.8L, V-6 w 217,000 miles.

Last Summer it overheated for the firs time. After running a garden hose
down the radiator it cooled.

I has also seemed to overwarm at Drive Thrus. But upon resuming trip, the
gauge would resume the usual running temp.

I have had a rusty colored sediment/deposits, and upon changing the Head
Gaskets and Intake Gaskets, had a few plugged water ports. The Radiator
CAP was severely clogged.

Upon re-starting the engine, bleeding the,air out and checking the
Temperature was too hot, removed the thermostat.

Even still, the coolant, has OVERHEATED and now that it is cooled back
down, the UPPER Hose has collapsed.

Can the RADIATOR CAP cause all this?

1 Answer

4,425

Check your cooling fan to make sure it is functioning. It is probably an electric and could be failing to energize when your engine temp rises. A fan failure would cause the temp fluctuation you see between the rise in the "drive through" line and going back to normal at speed.

Your Answer

Add photo

Related Questions

Search Pontiac Grand Prix Questions

Pontiac Grand Prix Experts

#1 Js08016
Js08016
Reputation 4,070
#2 Tom Demyan
Tom Demyan
Reputation 2,700
#3 munron
munron
Reputation 2,110
View All

Related Models For Sale

Used Chevrolet Impala
619 Great Deals out of 29,142 listings starting at $789
Used Pontiac Bonneville
524 listings starting at $1,695
Used Chevrolet Monte Carlo
8 Great Deals out of 1,398 listings starting at $2,588
Used Pontiac G6
44 Great Deals out of 4,204 listings starting at $1,250
Used Chevrolet Malibu
806 Great Deals out of 88,338 listings starting at $1,900
Used Pontiac Grand Am
1,337 listings starting at $775
Used Ford Mustang
308 Great Deals out of 45,195 listings starting at $2,000
Used Pontiac GTO
5 Great Deals out of 422 listings starting at $5,995
Used Nissan Maxima
283 Great Deals out of 25,777 listings starting at $2,589
Used Nissan Altima
776 Great Deals out of 77,370 listings starting at $470
Used Chrysler 300
354 Great Deals out of 20,457 listings starting at $1,000

Used Cars For Sale