Question about 2000 Pontiac Sunfire

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My 2000 pontiac sunfire keeps losing antifreeze but car doesnt overheat.can smell antifreeze and have puddle on ground.leaky hose?wheres radiator cap?

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Posted on Jan 02, 2017

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SOURCE: how much antifreeze do i

what type of antifreeze works best for my sunfire`/

Posted on Oct 07, 2008

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SOURCE: pontiac sunfire overheating

Blown head gasket.

Posted on Dec 02, 2008

  • 1 Answer

SOURCE: 2003 Pontiac Montana antifreeze smell?

Bad News. I recently had the same type of smell ( no leaks or puddles either) coming from my van and had to have the intake manifold gasket replaced due to the Dex-cool issue. It appears GM installed an inadequate/substandard gasket when they built the van. My van only had 65,000 miles on it. There's a Dex-cool settlement you could have applied for but repairs had to be made by May of 2008.

This is the only real complaint I've had with the van.

Posted on Dec 09, 2008

  • 1201 Answers

SOURCE: where is the 01 pontiac sunfire radiator cap

If you don't see a cap on the radiator, there isn't one, it's filled from the white plastic container, the cap should be marked engine coolant/

Posted on Jul 16, 2009

  • 148 Answers

SOURCE: Overheating problem

check the antifrezze level first but only after the cars cooled down then check to see if the coolant fans are coming on after it warms up

Posted on Jul 23, 2009

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1 Answer

Car is overheating on 2004 pontiac sunfire with plastic radiator without cap has a reservior


There are a few things that can make your car overheat 1 low on antifreeze 2 bad thermostat 3 bad radiator cap 4 radiator needs flushed 5 bad radiator hope this helps Merry Christmas

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My 2005 Pontiac Grand Prix is overheating and leaking antifreeze, I add coolant every few days then the temp goes up and I have to add coolant again. There doesn't seem to be any smoke coming from the...


You should look under the car after it sits a while and see if there is antifreeze on the ground. If so try to see where it could be leaking under the hood directly over the puddle. You could have a leaking water pump. If so there would be dampness under the right side of engine compartment. Also check the radiator hoses at front of car.

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I have 2001 pontiac sunfire keeps overheating. I replaced thermostat and antifreeze still overheats?


did you check the radiator fan? if fan doesn't works. Check the radiator fan relay.

Aug 16, 2010 | 2001 Pontiac Sunfire

1 Answer

We have a 2003 gmc Envoy V6 4X4 Automatic has 108000 miles on it i see that the hose was replaced going to the radiator we smell antifreese under the hood and having to put anti freeze in the over flow...


Well, the fluid from the radiator could be evaporating. Is the upper hose solid when you shut it off?

If you 'smell' antifreeze there 'is' a leak.

Is the fluid 50/50 strength antifreeze to water?

Usually, if there is a leak, it will drip to the ground or come out of the tailpipe (in the case of a bad head gasket).

It is not unusual to have a car with 108,000 mi. to have a leak somewhere.

Keep looking and topping off the fluid.

Jun 28, 2010 | 2003 GMC Envoy

1 Answer

I have a 2000 Pontiac Sunfire. It keeps overheating. I have replaced the radiator, water pump, a couple hoses, and the thermostat. I ariated it. It still overheats only runs cool if I run it without the...


i'm not being smart, but do you know for sure you are installing the thermostat correctly? the thermostat is there to slow the water flow down long enough for the water to obsorb the heat .also is the cooling fans operating ?do the fans come on at around 210 degrees?is the radiator grill clean? lower spoiler intact? does the engine over heat at highway speeds or while idling? are there any codes?is the engine running lean? possible fuel filter stopped up.fuel injectors dirty. let me know

Oct 14, 2009 | 2000 Pontiac Sunfire

1 Answer

We have a 2000 deville that started leaking coolant. we replaced the thermastat and it continues to leak coolant. it wont overheat as long as we keep the coolant in it. it leaks alot more when the car is...


check condition of radiator,radiator & heater hoses,look for spots wet w/ coolant.look more or less straight up above where coolant puddles on ground.engine block is equipped w/'freeze plugs' that sometimes corrode & leak.washing suspected area of leak with an engine degreaser product may aid in locating source of leak.

Sep 28, 2009 | 2000 Cadillac DeVille

1 Answer

2001 Pontiac Sunfire is dumping antifreeze out the overflow. Could it be something other than thermostat?


Common causes include: leak from engine, hoses, etc. causing overheat due to low coolant, electric fan not coming on, internally obstructed radiator, external obstruction to radiator (leaves paper. plastic bag on front of radiator of stuck between radiator and A/C condenser), bad thermostat and last, blown head gasket. Proper testing for any and all these conditions will give you the answer you are looking for. If the antifreeze is overflowing without any overheat, it can either be over-full, or in some cases, a head gasket can do this by filling the cooling system with exhaust and driving the coolant out.

Aug 15, 2009 | 2001 Pontiac Sunfire

1 Answer

Tube disconnected fron antifreeze holding tank to wherever it is supposed to go keeps losing antifreeze


there is two small hose come out from reservoir. on of them(rear one) goes to coolant bypass line it is a small metal pipe goes all the way to thermostat housing other hose(front) connected to radiator.
if you lose coolant from the bottom breathing hose on reservoir you may have air in coolant system you should bleed the system.

Jun 24, 2009 | 2000 Pontiac Grand Am GT

3 Answers

Antifreeze drip on drivers side inside cab of 2000 Audi A6 2.7T


leaking heater core or hose that feeds it. look for hoses that pass thru the firewall to passenger compartment. Most times the hose is clamped to a pipe at the firewall so you may just need a hose

Apr 03, 2009 | 2000 Audi A6

1 Answer

Antifeeze leak on my 2000 VW Beetle Turbo


Most likely a leaky gasket. The water pump is a likely candidate, but also could be from a bad radiator hose/thermostat connection. Would suggest washing down the engine with a hose connected to the hot water. While the engine is cold use the hose to wash off the oil & grease deposits and old antifreeze. Allow the engine to dry without running the car. Once dry start the car and be prepared to look for the first sign of a leak. Sounds like a dealer issue since there is very little work clearence between the front of the engine and the car body. Barely enough room to be able to change the serpentine belt.

Mar 20, 2009 | 1988 Buick Regal

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