Was starting fine till a couple weeks ago. Now it will crank but not start unless I depress the pedal a few times. I plugged the in the engine block heater overnight for about a week and still had to depress pedal to start. if I drive it and turn key off it will start back up. But if it sits I have to depress the pedal to start it. Once it is started it runs fine. Any suggestions will be appreciated

 

When you're cranking it, or when it finally does start, are you seeing white smoke out the tail pipe?

 

Never checked. I will go and check.

 

Just went and started and didn't see any white smoke. I was checking at night by the street light. I wii recheck in the morning in day light. Is it suppose to be little smoke or alot of smoke.

 

I just went out and started the truck in daylight and there was some white smoke out of the tail pipe.

 

How cold is it where you're at and how heavy is the white smoke? Does the smoke change if you don't pump the pedal? If you unplug the ICP sensor first, will it start without having to touch the pedal?

 

Today it was in the 60's, not heavy but noticeable, never check but will check tomorrow, never unpluged icp sensor will try that tomorrow, no will not start unless I pump the pedal.

 

Temps in the 60's, white smoke not alot but noticeable, never notice will check tomorrow, never unplugged icp sensor will try tomorrow, no have to pump pedal to start.

 

When your cranking the motor, what are your RPM's? If your batteries are weak, or your starter, and your not getting the rpm's high enough, your motor will not fire.

 

I haven't been checking these things so I have to check these things tomorrow and will let you know after checking

 

This morning when I got in the truck I cranked it and didn't touch the pedal and it started after about 15 seconds of cranking and no white smoke. i didn't check the icp sensor today because it was raining and it was dark and late when I got off of work. Through out the day when I drove it at lunch it started with out touching the pedal and it still took about 15 seconds to start. This morning when I went to start the tach whet alittle above 0 around 300 rpm and then went higher after it started. I just put two new batteries in on Nov. 18, 2012 because if I didn't get the truck started right away batteries would run down pretty quickly. had them tested and they were bad.

 

Do you have a Glow Plug Relay(GPR) Glow Plug Relay 1999 - 2003 Non-California models
or a Glow Plug Control Module(GPCM) Glow Plug Module 1999-2003 Excursion and F-Series California Models
What year is the truck and how many miles?
Do you have a multimeter and do you know how to use it?
If so then you can test the Glow plug system if you have a GPR.
If your truck looks like there are two GPR's in the center of the engine bay then the one closest to the back of the engine bay is the GPR.
4 leads total on the GPR. Two large and two small. We will be measuring voltage on the Large terminals.
On the terminal closest to the passenger side....that one should be at battery voltage all the time. The one closest to the driver's side should be dead with the key off. With the truck cold.....Turn the key on but not running and check the voltage on the Large terminal closest to the driver's side and see if it has 11-12.5 volts on it. If it does then the GPR is working properly. One of the two small leads will have battery voltage when the key is on. The GPR can stay turned on when the key is on for up to two minutes.
This is free to check if you have a multimeter. Get back to us with this info and let us know what year and how many miles. Thanks and Good Day.
Dwayne

 

I have a 2000 year truck and it has almost 118000 miles on it. I have a multimeter and i do know how to use it. It is raining today but i will check the GPR as as I can and let you know the outcome.

 

Today I unplugged the ICP sensor and the truck started with out touching the peddal.

 

I just checked the GPR and with truck off I have 12.55 volts on the terminal on the passenger side and when i turn the key on (not starting) I get 11.45 volts on both big terminals and I get 11.43 volts on the small terminal closest to the front of the truck. The GPR stays turned on for about 45 seconds.