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6.0L Power Stroke Engine and Drivetrain Discussion of the 6.0L Power Stroke diesel engine and drivetrain in the 2003-Up Super Duties and Excursions. No gas engine discussion allowed except on transmissions and drivetrain that pertain to all models. Please confine discussion of topics in this forum to those items that are specific to the 6.0L Power Stroke engine. is the premier Diesel Truck Forum on the internet. Registered Users do not see the above ads.
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Old 01-26-2013, 10:05 AM   #16 (permalink)
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IIRC a friend of mine bought an "03" used and someone had removed the vac solenoid from the inline hose for the heater. long story short, I finally found the long grey vac hose that went to the solenoid and connected it to a stub on the heater/ac box the one that has the blower attached. there is a nipple on the upper right hand side of the box. I plugged the vac stub into that nipple. HEAT. That was 8 years ago, he is still driving it. Hope this helps.
03 F-250 CC LB XLT 3:73 rear/ almost stock/ early build/ 78,000 miles...03 F-250 ext cab Lariat Fx4 SB 3:73's /stock/187,000 all original injectors...FICM by Ed @FICM.COM / ScanGuage 2 monitoring the vitals...
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Old 01-26-2013, 10:25 AM   #17 (permalink)
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Jetboy - You are saying that the thermostat is different for an 03 and early 04 engine vs a mid 04 and later one? If so do you have part numbers?

My info says they are all the same: 3C3Z-8575-AA

boonedawg - any updates?
06 F250 CC SB FX4 Lariat;ARP studs;OEM gaskets;Banks exhaust;DynaTrac Ball joints;Coolant filter;High-Idle mod;RACCCV6000;JimmiJammers;Ravelco;SynchroMax xfer case;Fumoto valve;Harpooned;CPOhighwayProducts toolbox;tracrac;Fox Weatherboots;Wet Okole Seat Covers;BriteBox;Re-flashed;Quadzilla Recon XZT Fuel Press;Blue FPR spring;DashDAQ;PHP FICM;RiffRaff boots;DCPower250A;PowerInverter;Rancho7000's;BPD EGR cooler;One-piece HPOP fitting;D-plugs&standpipes;BPD Billet WaterPump;SCT w/ Matts SRL+;ELC Ultra;DuraTracs

Last edited by bismic; 01-26-2013 at 10:29 AM.
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Old 01-26-2013, 12:09 PM   #18 (permalink)
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No Heat

03-07 all have the same thermostat.

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2005 F-350 cc, 6sp, 4" turbo back MBRP, 03 turbo, ARP studs, Sinister EGR delete, Southbend clutch, SCT with custom tunes and really bald tires
1996 F-350 Reg cab psd auto 187k so far so good
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Old 01-27-2013, 11:26 AM   #19 (permalink)
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Just getting back to y'all. Freezing rain since yesterday, had to use the cold, cold truck to rescue a couple of friends! Bismic - Just telling you what the parts store gave me first before I pulled the old one and took it in for proper 03PS, gonna have a look per your suggestion and will report back. Want to be sure to thank all 3 of you for jumping in. First time user, y'all literally saved me from lighting the truck on fire, felt so alone w/all these issues!!!! Still pissed. Love the truck, hate the engine. Dropped over $4 G's since buying a year ago and now that it's averaging 10 - 20 degrees outside it's cold in that dang cab!
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Old 01-27-2013, 12:01 PM   #20 (permalink)
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J...My job 1 03 has only one grey vac. line going to box (like 03 saying) but also nothing in heater hoses like you found out. When you turn on heat, do you hear a "thump" kinda sound inside cab? Appears your 04 has 03 6L. Hope you get it fixed, know you do.

btw..I use little 12V heater/fan that helps on cold/icy mornings here, until I get cab heat.
03 F250 XLT SC/SB 4X4 6L (stock) TqS. SRW 3.73's BD:02/11/03. 01 TL 23' SGII
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Old 01-28-2013, 11:51 AM   #21 (permalink)
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How cold is it outside? Try covering the radiator with cardboard to get the temp up. The thermostats fail open so this could be the problem. The engine temps should be 190+. Mine is 170 to 180 and I have the replacement thermometer ready to go when I get a weather window to replace it in.
2006 F250 Lariat Supercrew, ESOF 4x4, 18" tires, FX 4, HD Alt., block heater, Integrated Trailer Brake Controller, Upfitters, power rear window, cab lights - delivered 10/25/05

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