Question about 2002 Ford F250 Super Duty SuperCab

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In cold weater hard starting need to cycle through intake heater

If left outside in the cold < 30 degrees and I go to start, I let the intake heater light on the dash go out and then try to start it. It will pop and not start and then crank and crank if I let it. If I cycle through the intake heater 4 times it will most likely start and a huge puff of smoke will billow out and then run fine. Can these intake heaters go bad and how hard it this to replace. Is this something I want Ford to do or want Ford to hook up to the computer to find the problem?

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I will suggest to have ford repair these because they can be a pain. and as far as hookin up a computer it wont help much because you really need a check engine light to come on.
hope this helps you decide.
thank you

Posted on Apr 21, 2009

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Posted on Jan 02, 2017

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1 Answer

2007 Hyundai Accent GLS won't start when it's cold


probably need to be using a lighter weight oil. I use 5w-30 in central Texas. If you are that far north, where oil gets cold and thickens up....

have dealer verify by dropping off for service, parking outside overnight, and then try to bring it into the service bay next morning for service.

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Only when its cold outside it has a hard time staying running


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I have a 2000 pontiac grand prix with a digital climate control system. The heat quit working, it doesn't blow out any heat. Now that it is warm outside the air stopped blowing out any air. The digital...


I have a 2000 pontiac grand prix with a digital climate control system. The heat quit working, it doesn't blow out any heat. Now that it is warm outside the air stopped blowing out any air. The digital temperature on the climate control is not correct. When it states that it is below 30 degrees on the ext and it is warm outside the air wont be cold. Once it starts going above 30 degrees the air gets colder. Today the blower stop working all together. Was told it maybe the climate control unit was bad. You can hear the door opening/shutting when you switch the temp from cold to hot. But there was no heat blowing out whatsoever in the winter time. Could you please give me your opinion on whether or not it is the climate control unit or something else?

Jul 11, 2011 | 2000 Pontiac Grand Prix

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New battery, new fuel pump. All electrical systems work fine, every time the outside temp is less than 30 degrees, vehicle will not start. Turns over fine, just will not start.


Have a block heater installation the day light things warm up at night it gets really dry cold that's when the block heater keeps the engine warm enough to start.

Jan 03, 2011 | 2005 Chevrolet Suburban

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Hard to start below 30 degrees has newer plugs and wires and good battery.


If plugs, wires, and battery is new and good, make sure you are using 5w30 oil which is thinner and is made for winter. If needed, replace the fuel filter. There is a cold start valve that may be giving you problems. You can go to autozone.com and register for full free online repair manual for your car.

Dec 22, 2009 | 1990 Buick LeSabre

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I have a 2005 f-350 with the 6.0 in cold weather (colder than 15 degrees it has a hard time starting.


this motor has two starting aides. one is the glow plugs under the valve covers. the other is an intake manifold heater.either one will cause hard starts. both can be chked with an ohm meter. be sure to disconect you neg battery terminals before attempting. there is some high voltage under the valve covers

Dec 16, 2009 | 2005 Ford F 350 Super Duty

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Misreading outside temperature sensor on 2001 Audi A4


There are four sensors for ambient tempurature and they work in unison to provide information to the temp reading on the dash, the heater control head ( where to direct air, blending of warm/cold/outside/inside air flapper controls) depending on the ambient temp and the inside air temp sensor located just above the radio as well as the sun sensor on the top of the dash as well as the a/c compressor head.

When you start your car, the body control module takes the readings from all sensors, outside air temp located in front of the radiator, air temp sensor located in the airbox ( senses temp of air being drawn in from the outside into the air box), coolant temp, inside air temp sensor and the sun sensor on top of the dash (this is why it takes a few seconds for the climate control system to begine when you start the car). The intake air sensor is 1st priority, inside air second, coolant third, ambient 4th and sun 5th. For instance, if the sun sensor reads the sun is hot but the interior sensor reads cold, the inside akes priority. The goal is for the system to achieve a tempurature inside the car that matches the selected temp. It uses all of the sensors to set the system up to achieve that goal as quickly as possible.

Example; Its mid afternoon, sunny and 40 degrees outside adn your in stop and go traffic. The intake sensor reads 40 degrees, the outside sensor reads 60 degrees (heat from radiator...engine heat protrudes into cabin) and the sun sensor reads high (sun is strong). The system is set for 72. priority one sensor reads 40, inside sensor reads 65, ambient reads 60= system will blow hot air to the floor out put, dash outlets will lightly flow 65 degree air so the sun doesnt roast you yet your feet are cold(if it blew hot air from all outlets, your upper body would be hot but your legs/feet would be cold). as the interior sensor reaches desired temp, air will be distrubuted through thee dash, defrost and floor with the warmest air coming out the floor and defrost, coolest air out the dash vents. Its a complex system!

The two sensors that will screw the system up the most are the intake and interior sensors. the system will function reasonably well with just those two sensors though it wont blend air temps between outlets if the sun sensor isnt working. If the outside sensor fails, it simply uses the intake sensor, if the intake sensor fails it will rely on the front sensor. However, since the intake takes priority over the outside sensor, if the intake sensor sends incorrect resistance info rather than failing, it will take priority and cause the unit to malfunction such as in your case.

The intake air sensor can be changed from the outside with patience. If it where me, I would pay the two hrs labor and let the dealer do it right.

Kevin,
Kevins Small Engine service,
South Berwick ME. 03908

May 01, 2009 | 2001 Audi A4

15 Answers

'98 Yukon - Cold Start Issues (not battery)


I am thinking that there may be a fuel bleed down problem if this is an injected engine.

Try this, turn on the key, but do not try to start the engine for 30 seconds. Then see if the engine will start on the first try.

As for wearing the battery down, cold is hard on a battery, so having an engine that starts easy is easier on the battery.

Jan 26, 2009 | 1998 GMC Yukon

1 Answer

Cold weater start problem. Oil smoke in from the heater vent.


The same problem happened to me and it turned out to be my heater core.

Normally smoke will come from the heater core when it needs to be replaced.

Also the smell is most likely anti-freeze and and you normally smell it when your
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Check your coolant levels to be sure. and the hoses leading to your Heater Core

heater cores for that vehicle normally run $180 - $230 and you need to remove your
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I hope this helps!

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