Question about 1993 Buick Skylark

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Tips on changing out thermostat on 93 Buick Skylark

Just finished replacing radiator and now have no heat and engine overheats when driving, not idling. Figure it must be thermostat. Also need to know how to flush system to get out old sludge that could be causing bloackage.

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  • Buick Master
  • 331 Answers

Yeah its the thermostat if your not getting any heat from the heater.

flush: how to video

Posted on Oct 13, 2008

  • alex metro
    alex metro Oct 13, 2008

    didn't work. the first time

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4 Answers

I have a 1992 buick skylark v6 3300 it is overheating no leaks no oil in the water or water in the oil no antifreeze in te exaust just changed the thermostat


Probably the water pump, when the engine is completely cool, open the radiator cap, start the engine, turn on the heat full, and check to see if you have circulation at the radiator cap nosal you should see movement of water if pump is good....

Feb 20, 2015 | 1992 Buick Skylark

2 Answers

86 buick skylark overheating


Sounds to me like you addressed everything but the radiator. Check it or just replace it.

Sep 05, 2014 | 1986 Buick Skylark

2 Answers

My Buick skylark doesn't leak but it over heats..


To troubleshoot this types of problem,click the link below :---

All types of car overheating problems and troubleshooting? http://technoanswers.blogspot.com/2011/11/all-types-of-car-overheating-problems.html

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heater blows through defrost?

-http://howtobyme.blogspot.in/2012/02/heater-blows-only-from-defrost.html
--------Go through the procedure to confirm the issue.

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Engine Overheats and heater blowing cold?

http://howtobyme.blogspot.com/2011/11/engine-overheats-and-heater-blowing.html

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Heat blows cold on drivers side and hot on passenger side?

http://schematicsdiagram.blogspot.com/2011/12/heat-blows-cold-on-drivers-side-and-hot.html

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This will help.Thanks.

Dec 08, 2011 | 1995 Buick Skylark

2 Answers

1998 Buick Skylark is over heating


You need to check the radiator cap for air leaks and also try having the radiator Flushed as you could have plugged fins inside the radiator, causing the radiator not to cool the antifreeze.

Jul 10, 2009 | 1998 Buick Skylark

1 Answer

'86 Skylark overheats after 15 minutes of driving. Any suggestions? Oil and water are okay.


1. Try this locate your goose neck its where your thermostat is located should be top hose comming from your radiator to your engine block. Tap on it lightly several times this might be made out of aluminum so don't go crazy on it.

2. Do this while it is hot but not over heating see it it fluxuates and it may calm down, sludge and gum builds up around the thermostat and causes it not to open (Or Sticks) CLOSED and creates pressure and heat it's letting the coolant circulate through the engine thus it can't keep the engine cool.

3. Question does the electric fans kick on, if it has electric fans? If not then the fan has a sensor check sensor loose connections and the ground is very important also make sure the fuse is not blown may have two fuses on on engine fuse block and one under the dash check both.

4. Mileage if its high miles car the radiator may be old depending on your situation may consider replacing it, replace the thermostat that usually is the culprit!

REMEMBER TO check coolant level!

5. But not always. Maintenance, Maintenance, Maintenance! If doing routine checks on your vehicle Isn't your bag of tricks then try your local jiffy lube or other lube shop. GOOD LUCK!

Apr 14, 2009 | 1986 Buick Skylark

1 Answer

93 buick skylark car wont start in part but once


neutral safety switch...the linkage isnt allowing it to fully be placced in park so the signal is acting like it is in reverse, it is in the collumn

Feb 21, 2009 | 1993 Buick Skylark

3 Answers

1995 Buick skylark overheating


there could be several resons for the overheating:


1. water pump doesn't circulate properly

2. Bad thermostst

3. fan clutch/radiator fan are non operative

4. relay is bad

5. clogged system

6. clogged radiator

to check on the the specific problem first power wash the radiator to remove bugs and road grime. they block the air from flowing over the fins and coil of the radiator thus not allowing the heat to disapate from the coolant. next install the good thermostat and make sure the spring part of the thermostat is facing down.next fill the radiator with coolant all the way up to the neck of the radiator and leave the cap off. next turn your heat setting to max fan and max heat temp. start the vehicle let the vehicle heat up and keep watch for the the flow of coolant soon as it goes down you should feel the upper radiator hose get real hot this indicates that the thermostat is working. now if you have a fan clutch for a conventional rear drive vehicle once the temp reaches 180 degrees the fan should no longer free spin it should start spinning faster if it is working like it should. if you have a transverse mounted engine for front wheel drive you will have a fan unit mounted to the radiator. these should be spinning when the engine reaches temp of 180 degrees. If they are not open the junction box and located the fan relay. switch out the relay with another one( I use the a/c clutch relay)if the fans kick on it's the relay that is bad, if it doesn't then either it's the fan unit itself or the temp sensor on the fan unit.now after you have done all these checks and everything is in order check the hoses going to the heater core at the fire wall they should be hot to the touch if they are not you have a clog at the by-pass of the water pump or manifold inlet.if the hoses are hot and you still have no heat then it's a bad valve inside the cab near the heatercore or a defective climate control module. check the fuse first to see that it is good.after the engine has been running a while the level of coolant should have gone down and then refill to proper level and replace cap after all of this if you still don't have heat and it overheats you have a bad water pump.... please rate this thanks

Sep 23, 2008 | 1995 Buick Skylark

2 Answers

Over heating


change water pump

Sep 06, 2008 | 1995 Buick Skylark

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