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Starts good in morings but hard starting when warm

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2002 Ford Mustang GT, CAR STARTS UP FINE WHEN COLD. Hard to start when warm No Check Engine lights come on.


Think about how the vehicle is acting. Starts fine when cold, hard to start when warm. In these computer operated systems, the computer runs everything. Starts fine when cold: the computer has the engine in cold start mode putting more fuel in till it warms up. Temperature sending unit in the manifold sends a message to the computer telling it to stop the cold start mode and it stops dumping excess fuel into the cylinders and it runs fine. IF, mind you, IF the temperature sending unit is faulty, it's not telling the computer to stop the cold start mode and is flooding the engine with fuel cause it's sill in cold start mode. This is my take away on your situation and the temp sending unit is something to check to be sure it's functional. Check it out. I hope this WAS the answer to your problem my friend. It's typical. Luck to'ya Bro.

Jun 06, 2017 | Ford Cars & Trucks

1 Answer

Cool mornings it doesn't want to start ,i have to turn the key to start and let it off several times and it will eventually start after that it starts fine all day and starts fine on warm days


How to Start a Car in Freezing Cold Winter Weather

www.wikihow.com > ... > Cars > Car Maintenance and Repair

wikiHowFreezing cold weather can take a toll on car batteries. ... It's much more difficult to start a cold car with a mostly-empty tank, so do yourself a favor and gas up ...

Why is it so hard to start a car in the winter? - HowStuffWorks

auto.howstuffworks.com/car-driving-safety/.../start-car-in-winter.htm
To start a car in winter, your engine has to work extra hard. Learn the top 3 reasons your car is hard to start in cold winter weather.

Debunking 5 Cold-Weather Car Myths - Popular Mechanics


Nov 21, 2015 | Cars & Trucks

1 Answer

2001 saturn L100 hard starting when cold


Have load test run on battery. Your cranking amps maybe low. If your battery is over 3-4 years old then thats more than likely your problem

Sep 17, 2015 | Saturn Cars & Trucks

1 Answer

Hard starting, rough idle when cold, then smooth running when warm


Need year/make/model/mileage of vehicle to provide a more specific set of troubleshooting steps.

When was the last tune up? Hard starts when cold are usually caused by fouled spark plugs, worn plug wires, or weak ignition coils. Fuel systems are not as effected by temperature changes as the ignition components.

Nov 28, 2012 | Cars & Trucks

1 Answer

1988 Ford Taurus hard start problem


Change the coolant sensor located close to the thermostat housing. This is easy but do not over tighten it. You will have the same problem if you do. Tighten till it does not leak only.Good luck!

Nov 25, 2009 | 1988 Ford Taurus

1 Answer

Will not start when warmed up


Your starter is going bad. Consider replacing it. Temprature does not mean a car should not start.

Good luck.

Rate this please.

Apr 17, 2009 | Toyota Corolla Cars & Trucks

1 Answer

When my chev 2000 sub is warm hard to start


I have a really good hunch that your problem is the spark plugs. As with this when your engine gets warmer the plugs get hotter and they start to lose power when you try to start your engine. I am not positive on this but I am really certain, but with this problem there can be a number of things happening.

Jan 30, 2009 | 2000 Chevrolet Suburban

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