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OB mechanic question

Posted on 5/2/13 at 8:11 pm
Posted by hugo
CenLa
Member since Sep 2007
1081 posts
Posted on 5/2/13 at 8:11 pm
I have an '04 Pontiac Grand Prix, 171,000 miles on it. It recently started running hot. Kept putting water in it and finally replaced the radiator. It did good for 2 weeks and ran hot again, was completely put of water. Obviously it is losing water somewhere. Though it could be a blown head gasket. But the oil looks good, not watert. Any recommendations on what to check next?
Posted by JAB528
The Mexican Ocean
Member since Jun 2012
16870 posts
Posted on 5/2/13 at 8:12 pm to
Paging greasemonkey.

I'd check the water pump.
Posted by bbvdd
Memphis, TN
Member since Jun 2009
24944 posts
Posted on 5/2/13 at 8:12 pm to
Water pump?
Posted by Soul Gleaux
Baton Rouge
Member since Sep 2012
4026 posts
Posted on 5/2/13 at 8:13 pm to
When you changed the radiator did you put any coolant in or straight water?
Posted by hugo
CenLa
Member since Sep 2007
1081 posts
Posted on 5/2/13 at 8:15 pm to
coolant
Posted by JAB528
The Mexican Ocean
Member since Jun 2012
16870 posts
Posted on 5/2/13 at 8:15 pm to
Or your heater core.
Posted by Hurricane Mike
Member since Jun 2008
20059 posts
Posted on 5/2/13 at 8:16 pm to
My old Grand Am leaked from the hole in the water pump and the coils on the passenger side floor
Posted by Soul Gleaux
Baton Rouge
Member since Sep 2012
4026 posts
Posted on 5/2/13 at 8:19 pm to
When it has coolant in it, does it overheat fairly quickly or take 30 min or so.
Posted by meauxjeaux2
watson
Member since Oct 2007
60283 posts
Posted on 5/2/13 at 8:22 pm to
I've changed out a shite ton of heater cores in those year Grand Prix/ams.
Also make sure the electric fans are coming on. Could be boiling out of the reservoir if not.
Posted by hugo
CenLa
Member since Sep 2007
1081 posts
Posted on 5/2/13 at 8:23 pm to
It took it almost to weeks with coolant. Two days with water.
Posted by Rayvegas1484
Zebedee
Member since Feb 2010
2527 posts
Posted on 5/2/13 at 8:27 pm to
Thermostat ?
Posted by hugo
CenLa
Member since Sep 2007
1081 posts
Posted on 5/2/13 at 8:32 pm to
I was thinking all of the above. Also noticed the last few times I had the heater on, it never really got hot. Would the heater core make it loose coolant like that?
Posted by jorconalx
alexandria
Member since Aug 2011
8586 posts
Posted on 5/2/13 at 8:33 pm to
blown head gasket.



eta:
quote:

Also noticed the last few times I had the heater on, it never really got hot


i feel pretty sure i'm right about the blown head gasket.
This post was edited on 5/2/13 at 8:35 pm
Posted by meauxjeaux2
watson
Member since Oct 2007
60283 posts
Posted on 5/2/13 at 8:43 pm to
Low coolant period will cause the heater not to work,no matter how it got out of the system.
Posted by jimbeam
University of LSU
Member since Oct 2011
75703 posts
Posted on 5/2/13 at 8:43 pm to
who is your avi?
Posted by JAB528
The Mexican Ocean
Member since Jun 2012
16870 posts
Posted on 5/2/13 at 8:45 pm to
quote:

blown head gasket


No milky oil or steam coming out of the tailpipe. I don't believe the head gasket is blown.
Posted by TurnipWagon
Member since Jan 2013
68 posts
Posted on 5/2/13 at 8:50 pm to
Thermostat... The reason it didnt get hot when you had the heater on is the fluid went into the heater core. Change the thermostat, replace coolant, should be good to go
Posted by meauxjeaux2
watson
Member since Oct 2007
60283 posts
Posted on 5/2/13 at 8:51 pm to
Can't remember her name but she the one who wrote that email to her sorority sisters
Posted by meauxjeaux2
watson
Member since Oct 2007
60283 posts
Posted on 5/2/13 at 8:51 pm to
Omg
Posted by JAB528
The Mexican Ocean
Member since Jun 2012
16870 posts
Posted on 5/2/13 at 8:52 pm to
People don't seem to realize tha low/no coolant=no heater.
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