Cooling / heating issues

Asked by GuruXHZJZ Oct 28, 2018 at 08:09 PM about the 2005 Buick Rendezvous CX FWD

Question type: Maintenance & Repair

2006 Buick Redezvous 133k. Well maintained. Last
winter/spring season I had replaced the original thermostat   
replaced due to lack of heat in car. It will be warm (not hot)
then cold & back again. A month or so later I had it
replaced again. Bad part? Now 6 months later I'm having
same issues. Temp gauge will sometimes rapidly increase
causing me to pull over. Sometimes the temp gauge will be
in normal operating range & have no heat. You can also
hear a gargling sound in the car from time to time.
My thought was I have air in the system due to the
thermostat replacement. Its not a simple replacement due
to the fact the throttle body has to be removed. I've tried
burping the system with some success. Any other
suggestions? I'm thinking a radiator flush first?

5 Answers

GuruXHZJZ answered 5 years ago

I'd like to add this is an everyday rider. No problems over the summer (warmer months).

Mark helpful
26,255

taver91 answered 5 years ago

First, check your coolant level and make sure there is sufficient liquid in the system. If that is good, are you absolutely sure you put in the new thermostats in the proper direction? Past that, check for continuous flow from the water pump and through the radiator. If flow is sporadic or sluggish, you may need a new pump or radiator.

1 people found this helpful.
Mark helpful

GuruXHZJZ answered 5 years ago

..this also doesn't happen everyday. Saturday I drove & ran errands for half the day. No indication of over heating on gauge. The heat temp fluctuated a couple times but no big swings. Drove into work Sun am no problems. Sun night, overheating (according to the gauge) & no heat. Today, heat was great with no overheating problems. What gives?

Mark helpful
26,255

taver91 answered 5 years ago

Answer is still the same. Check your coolant level first then move on to the other suggestions made.

Mark helpful

Your Answer:

Related Questions

Rendezvous

Looking for a Used Rendezvous in your area?

CarGurus has 91 nationwide Rendezvous listings starting at $2,999.

ZIP:

Own this car?

Share your experience with others.

2005 Buick Rendezvous

Write a car review

Review another car

Shortcuts

Search Buick Rendezvous Questions

CarGurus Experts

  • #1
    jimmypd65
    Reputation
    1,050
  • #2
    Bilhar
    Reputation
    970
  • #3
    Randal Davis
    Reputation
    910
View All

Know more, shop wisely

Search

Related Models For Sale

Used Buick Rainier
42 listings starting at $3,495

Used Cars For Sale

2007 Buick Rendezvous CX FWD For Sale
15 listings starting at $3,495
2006 Buick Rendezvous CX FWD For Sale
8 listings
2005 Buick Rendezvous CX FWD For Sale
7 listings starting at $2,999
2004 Buick Rendezvous CX FWD For Sale
8 listings
2003 Buick Rendezvous CX FWD For Sale
4 listings

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.