Question about 1990 Pontiac Bonneville

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Does not start in cold weather when it is 45degrees or less

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  • Pontiac Master
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The first thing I would check would be the fuel pressure - pump may not be reliably starting. Besides that try turning the key off-on several times (to get extra prime shots) and see if that makes a difference.
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It can be also possible that fuel regulator is got weak or the ignition coil is getting moistured due to cold weather.

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This problem is seen in many other car models too.In cold weather the fuel pump, the coil the hoses etc etc all gets contracted and very tight and when weather gets warm or engine gets warm, then it expands so the flow of fuel starts and engine starts normally.------

In some cases its noticed that fuel freezes in the injector and that blocks the flow of fuel in cold weather and engine requires to be warm to get it started.----

Get the tune up done for the parts and get fuel pump, fuel filter,m the coil ,the spark plugs , the injector, the fuel regulator, the fuel and other parts serviced.This will help.If any part tested weak then get it replaced.

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This should help.Thanks.Helpmech.


Posted on May 21, 2011

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Posted on Jan 02, 2017

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My car doesnt want to start up right away in the morning. Almost like its really cold out and it takes it a min. The rest of the day its fine runs great. Any ideas?


Reason 1 - Gasoline, like any other liquid, evaporates less when it is cold.You have seen this -- if you pour water onto a hot sidewalk it will evaporate a lot faster than it will from a cooler place like a shady sidewalk. When it gets really cold, gasoline evaporates slowly so it is harder to burn it (the gasoline must be vaporized to burn). Sometimes you will see people spray ether into their engines in cold weather to help them start -- ether evaporates better than gasoline in cold weather.

Reason 2 - Oil gets a lot thicker in cold weather. You probably know that cold pancake syrup or honey from the refrigator is a lot thicker than hot syrup or honey. Oil does the same thing. So when you try to start a cold engine, the engine has to push around the cold, gooey oil and that makes it harder for the engine to spin. In really cold places people must use synthetic motor oils because these oils stay liquid in cold temperatures.


Re ason 3 - Batteries have problems in cold weather, too. A battery is a can full of chemicals that produce electrons The chemical reactions inside of batteries take place more slowly when the battery is cold, so the battery produces fewer electrons. The starter motor therefore has less energy to work with when it tries to start the engine, and this causes the engine to crank slowly.

All three of these problems can make it impossible to start an engine in really cold weather. People either keep their cars in heated garages or use "block heaters" to get around these problems. A block heater is a little electric heater that you plug into the wall to keep the engine warm.
i hope it was convince answers

May 30, 2011 | Dodge Stratus Cars & Trucks

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When it is below frezzing my Isuzu makes a clicking sound instead of starkting but in warm weather it starts all the time ?


more then likely the battery is going bad. in cold weather it takes a good (cca) cold cranking amps, battery to turn engine over. but in warm weather the engine is not as cold and therefore needs less cranking amps. thats why you hear clicking when trying to start car in cold. it is the solinoid clicking and not enough power for starter to turn it over.

Feb 06, 2011 | 1993 Isuzu Amigo

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1997 Mercury Cougar will not start in cold weather


Try checking your battery with ammeter. in times of cold weather, battery has less charge to start!. better go for a newer one thanks

Jan 18, 2011 | Mercury Cougar Cars & Trucks

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Takes a extreme amount of time to "warm up" when starting in cold weather. Spits and spurts for a number of miles during cold weather starts. Problem does not appear when the outside ambient temp is very...


very likely to be the thermostat needs replacing(to test,wrap a piece of cooking foil around the radiator/front grill and see if the heatup time is less,if it is, then its the thermo.) easy,yes.....

Jul 02, 2010 | 1994 Lincoln Town Car

1 Answer

2001 dodge durango, when the weather is real cold


have the ECT checked,
Engine coolant temperature,lets the computer know whether it should push more fuel thru for cold mornings ,
the sensor could be telling the computer that your engine temp is 75 degrees,means less fuel being pushed

Dec 10, 2009 | 2001 Dodge Durango

1 Answer

It hesitate to start up in cold weather i have to give a pump of


There is a cold start valve srpay extra fuel at the start to assist the start in the cold weather. If it is not open during the start then this is why there is a problem. This valve is operated by an electric coil. Even checking the resistance reading, but the valve is still not opening due to being stuck. Power is only coming to the valve during the start and the temperature is cold reported by the coolant temperature sensor . If the coolant temperature sensor is bad reporting warm temperature then the valve will not open. The temp sensor is less expensive than the valve, so it is an economical way to tackle the sensor first. Good luck.

Nov 19, 2009 | 1997 Volkswagen Jetta

1 Answer

Hi, My 93 corolla starts hard in the cold weather. Other than that, runs great. I have changed the plugs, wires, pvc, and fuel pump. Any thoughts?


When it is cold, gasoline evaporates less and this cause it to be more difficult to burn due to the fact that it is burnt when it is evaporated,
in order to overcome the lack of gasoline evaporation problem, you can spray ether into the engine which would evaporate quickly and help the engine start. Besides this, you can also to prevent having oil too thick which wouldn't circulate properly by using thin synthetic oils. You should also try to maintain the car isolated from cold as much as possible, but by using the two last mentioned methods you would experience much less problems at the time of staring the car in cold weather.

Oct 28, 2009 | 1993 Toyota Corolla

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Takes 20 - 25 min to start when weather gets


saturn has a TSB#04-08-45-005D the ignition switches go bad usually when its cold outside and they dont let the car start,common ion issue,,you need a new ignition switch,,not the lock cylinder the switch its a little electric box on the end of the cylinder housing you need to replace that and reprogram the new one to the car,switch is like $40

Oct 16, 2009 | 2006 Saturn ION

1 Answer

1998 S-10 cold start


The cold weather wreaks havoc on everything. I am thinking that the cold weather and your octane rating are not getting along, hence no error codes. Have you tried fuel drier and or octane booster?Since the truck starts when the temperature gets warmer, I would look at octane as the culprit. Try some octane booster and see if that helps. Let me know. Hope this helps.
Thanks;
Rich
RPM Northwest

Jan 26, 2009 | 1999 GMC Jimmy

1 Answer

Cold weather starting 2000 Ford Ranger


I would check the Air Charge Sensor. This sensor measures the temp of the air charge going into the fuel injection system, when you truck is cold it requires more fuel and less air, if this sensor has gone bad it would lean out your fuel mixture as if the vehicle was already warm.

Nov 20, 2008 | 1995 Ford Ranger Supercab

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