Question about 2005 Pontiac Bonneville

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Engine smell in the cars vents when air or heater turned on also engine temp gauge is eratic

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Suspect bad heater core and a low coolant condition

Posted on Oct 05, 2010

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2 Answers

Get hot air from heater


If the blower works and there is no hot air, you may have an issue with your heater core. Does it smell like coolant in the car?

Oct 08, 2014 | 2000 Pontiac Grand Prix GTP

1 Answer

Erratic temp gauge - strong smell of antifreeze - temp light comes on flickers goes out. really hot air coming through heater vents.


have the alternator checked for out put. have a pressure test done on the cooling system to check for leaks The fluctuating temp gauge may be the boiling water gushing past the sender bulb .

Mar 02, 2014 | Buick Century Cars & Trucks

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No heat but blows cold air


Not if the engine is getting up to normal temp. Could be low on coolant or a problem with the heater core or a blend door under the dash.

Jan 24, 2014 | 2001 Saturn L-Series

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Cold air only from heater


first check temp gauge on dash is it normal if so termostat is fine than check the heater hoses going inside from engine compartment if they are hot rule out control valve if it in the engine compartment sit in the vehicle and listen for any noise when you move heater temp switch from cold to hot if you hear clicking noises and no change it may be blend door accutator with moves when you slide or turn heat control nob the heater may have to be removed on some models eexpensive repair may be needed

Jan 21, 2013 | 2007 Toyota RAV4

1 Answer

No heat just cold air


Is the gauge showing the engine is warming up to normal temp ?
Are the heater hoses getting hot ?
If the heater core is getting hot, it could be a blend door problem. The blend doors direct air thru the heater core and the ac evaporator among other things.

Dec 06, 2012 | 2005 GMC Yukon

1 Answer

Smoke coming through vents temp. gauge going up acting like its going 2 overheat turn heater on hot and smokes bad turn to cool and smokes a little my husband thinks it's the thermostat and wants to...


If the heater core is leaking, you would get a lot of steam that would smell "sweet". That would also leave you low on coolant, which could be a source of your overheating. If it's more of an electrical smell, you may have a blower motor or a blower motor resistor going bad, but won't cause the engine to overheat.

May 03, 2011 | Ford Ranger Cars & Trucks

2 Answers

No Heat, fan blows cold air, car dosn't overheat and no smell from coolant


If the engine temp gauge reads like normal, then you either have a bad heater core, or the valve that feeds the engine coolant to the heater core is stuck shut. If the temp gauge seems to be on the cold side, or fluctuates from normal to cooler than normal and back, it may be your thermostat is stuck open.

Oct 05, 2010 | 2001 Dodge Stratus

3 Answers

2001 Mitsubishi Montero Limited. 122k miles.


2003 Mitsubishi Montero Limited. 97k miles. Temp gauge is erratic when actual temp is normal. How do I fix this?

Nov 13, 2009 | 2001 Mitsubishi Montero

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GMC Sonoma SLE 4.3L 1991- Coolant Temp Gauge Not reading


there are 2 coolant sensors one for gauge and one for ecm

Jul 23, 2009 | 1991 GMC Sonoma

1 Answer

Heater on driver-side blows barely warm air other vents blow cold


the most probabale cause of this would be a disfunctional hear core if you replace your heater your heater will more than likley work the the way it's supposed to

Jan 18, 2009 | 2001 Dodge Grand Caravan

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