Question about 2000 Ford Expedition
It starts right up but then dies if I don't keep it reeving! It takes 10-15 to get it to go but then it's fine
Your vehicle needs a signal from a Temperature sensor to activate the "Cold start routine". The cold start routine is a modern day version of a choke used in the old days. This process will make the engine speed up by enriching the fuel mix and resetting the engine timing.
The problem is that your engine is stuck in the normal "Lean" run position for better mileage and lower emissions. There can be 2 temperature sensors in each vehicle with only one dedicated to operating the engine controls. The other sensor would operate the dash gauge or light.
When the Temperature sensor is replaced, the system should work again. If it does not respond, there could be a connector problem in the PCM unit, but it is less likely.
The onboard diagnostics would generally monitor the PCM, but the Temperature sensor is usually an unmonitored device.
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Posted on Jan 10, 2013
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Posted on Jan 02, 2017
your problem appears to be the idle control motor located on the air intake manifold it is a small motor that goes bad quite often. Other items that can cause this is a bad /clogged air filter or a tune up (spark plugs and wires), or clogged fuel injectors. to clean the injectors you can buy a container of fuel system cleaner and pour it into the gas tank and as you drive it cleans the system.
Once the fuel system is cleaned via a tankful of cleaner & gas then the idle controller motor would be next on the list to be replaced.
Good Luck !
Posted on Dec 03, 2008
SOURCE: E85 fuel in a regular gas tank
Siphon out as much of the E85 as you can and fill the tank with good gasoline and drive it like you stole it for a while. You can't drain a tank without removing it and the fuel filter isn't going to catch anything in the E85. This is what I would do anyway.
Posted on Dec 13, 2008
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