2003 Rendezvous No Heat when Idling

Posted in the Buick Rendezvous Forum

DesignatedKnitte r

Chicago, IL

#1 Oct 13, 2006
Also, now that cold weather is here, I've discovered that my car doesn't produce heat when idling. Once I'm driving along, it gets nice and warm, but if I stop at a traffic signal, the air gradually cools off. It did not do this last winter.
The car's temperature gage runs close to the middle - a little below.
DesignatedKnitte r

Chicago, IL

#2 Oct 24, 2006
Turns out this issue was that I was losing coolant. The car is in the shop now for them to diagnose that.
same thing

Catonsville, MD

#3 Feb 5, 2007
DesignatedKnitter wrote:
Turns out this issue was that I was losing coolant. The car is in the shop now for them to diagnose that.
Mine is doing the same thing now, what was ur diagnosis????
DesignatedKnitte r

Chicago, IL

#4 Feb 5, 2007
It was the famous "Intake Manifold Gasket" issue which has been covered at length elsewhere in this forum. I needed the gasket plus a water pump, but fortuanately I did not need a new head gasket. The faster you get it fixed, the less damage it causes.

And for the record, I never had coolant on my garage floor or any sign that I was losing coolant until I didn't have heat. The pressurized the system to diagnose it.
Frank

Kansas City, MO

#5 Feb 17, 2007
DesignatedKnitter wrote:
Also, now that cold weather is here, I've discovered that my car doesn't produce heat when idling. Once I'm driving along, it gets nice and warm, but if I stop at a traffic signal, the air gradually cools off. It did not do this last winter.
The car's temperature gage runs close to the middle - a little below.
Sounds like a bad engine thermostat.
Scott

Wise, VA

#6 Feb 18, 2007
It sounds to me like you got robbed!! A simple heat issue with no coolant leaking at all is certainly NOT a bad intake gasket!! Plus you didn't have any engine overheating problems? I hate shops that take advantage of people! You really need to take this to another shop, an honest one if one still exhists. Get a statement and have the first shop explaining to the better business beauru why they came up with this diagnosis and charged you for work not needed!!
a mitchell

Cleveland, OH

#7 Mar 19, 2007
some body told me that i needed to have my system power flush , but now that i hear this i don't think this will work. I need some advice I just bought the thing the end of december and I have a feeling the dealership knew about this problem i think the sold me a lemon
a mitchell

Cleveland, OH

#8 Mar 19, 2007
same thing wrote:
<quoted text>
Mine is doing the same thing now, what was ur diagnosis????
mine is doing the same thing and I just bought the car and i feel like the dealership knew about this problem i wonder will the charges be covered under my extended warranty.
ROY

Pasadena, MD

#9 Mar 29, 2007
Scott wrote:
It sounds to me like you got robbed!! A simple heat issue with no coolant leaking at all is certainly NOT a bad intake gasket!! Plus you didn't have any engine overheating problems? I hate shops that take advantage of people! You really need to take this to another shop, an honest one if one still exhists. Get a statement and have the first shop explaining to the better business beauru why they came up with this diagnosis and charged you for work not needed!!
DOOD THAT IS EXACTLY WHAT THAT IS IF YOUR NOT AMECH OR HAVE ANY MECH ABILITY YOU SHOULDNT TELL PEOPLE THAT THATS WHY US PROFESSIONAL MECHANICS GET A BAD RAPP FROM YOU PEOPLE WHO DNT KNOW AND THAT TICKS ME OFF IM A VERY HONEST MECHANIC MY FATHER TAUGHT ME THAT WAY
Dianne

Pleasant Valley, NY

#10 May 15, 2007
I have a 2003 Buick Rendezvous that feels like it runs out of gas when the tank has gas in it. It only seems to happen when the car runs for long periods of time or when its hot. Any clues
New_Rendezvous_o wner

United States

#11 May 22, 2007
Hey guys!
I just bought a 2003 Rendezvous and noticed that everytime I ran A/C, the temperature guage goes over half of the mark. At times specially at the traffic lights, it goes to 3/4 of the 125 mark. Not sure what the issue is? Any suggestions? I don't have an extended warrranty however, I still have 2 weeks dealer warranty out of one month initially I got. Any help/suggestions would be very helpful.
Thanks in advance.
cplnomads2002

Two Rivers, WI

#12 Feb 11, 2008
Dianne wrote:
I have a 2003 Buick Rendezvous that feels like it runs out of gas when the tank has gas in it. It only seems to happen when the car runs for long periods of time or when its hot. Any clues
hi there I just got a letter from Buick saying that the fuel line mak crack and if you have or had the ploblem they will pay for it..customer center# 18006088080 8:00 to 11;00pm m-f
cplnomads2002

Two Rivers, WI

#13 Feb 11, 2008
hi there I just got a letter from Buick saying that the fuel line mak crack and if you have or had the ploblem they will pay for it..customer center# 18006088080 8:00 to 11;00pm m-f
Aziz

Flushing, NY

#14 Jan 12, 2011
I have a buck rendezvous 03 and the heat isn't working for two days now. It was working fine before, but now it's just blowing a cold air. Any ideas?
envoy13

Providence, RI

#15 Dec 27, 2011
my 03 was doing the same thing i replace the thermostat and i check the chamber inside of the car but nothing since to work, but then i check some videos and my conclusion was the heater core i got the engine flush and the heater core to and my mechanic put in CLR into the heater core for about 20 minutes an i have to tell you is working awesome.

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