truck hesitates when cold.

[iblue250]

I have a 2000 f250 7.3 diesel, and ever since the weather has gotten colder its seems to hesitate until it warms up. Seems to be hesitating at lower rpm's,also notice when i have the heater on it sounds like the blower motor is pushing more air thru the vents. Just wondering if anyone can help me figure out my problem without spending a ton of money.

[Marty]

These engines THRIVE on heat... until they warm up, they're sluggish.

You may need to elaborate for us to really help out.

[iblue250]

It seems if I'm driving down the road with my foot held steady on the throttle the engine will haul down for about 5 seconds and then it regains its power. At the same it hauls down the heater sounds like it is getting a boost of air.

[JUGGERNAUT]

my 99 does the same just does not like the cold. If I have my edge on it wont go for crap until im up to operating temp.

they need heat to ignite the fuel no heat no ignition(well poor ignition any way).

[djsdiesel]

sounds like the exhaust back presuure valve coming on to me.

[JUGGERNAUT]

Yea that comes on when cruzing but shuts off with any throttle imput

[djsdiesel]

Originally Posted by iblue250

It seems if I'm driving down the road with my foot held steady on the throttle the engine will haul down for about 5 seconds and then it regains its power. At the same it hauls down the heater sounds like it is getting a boost of air.

like i said sounds like ebpv

[JUGGERNAUT]

Sorry it was a long day.

[MAdman1]

Real quick guys.... I have the same sound ( the back pressure sound) when I keep a steady foot, and goes away when I put my foot into it. I understand it could be the ebpv but I never heard it before. Is it normal? Is there a way to fix it if not?? Thankx

[~CrazyDiesel~]

totally normal on both counts.