99 & up 7.3L Power Stroke Engine and DrivetrainDiscussion of the 99 & up 7.3L Power Stroke diesel engine and drivetrain in the 1999-Up Super Duty trucks 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 7.3L Power Stroke engine.
check the plug to the compressor too. mine got hot somehow and doesn't make a good connection. it would intermitently go off and on
2001 7.3L F-350
4 door long bed
-210,000 miles on the truck
-2nd motor with ~115k miles on it
4" Flo~Pro Turbo Back Exhaust, 6637 with Pete's Pre-Filter, Superchips 1700 Programmer-60hp Setting, Glow Shift EGT-Trans Temp-Boost gauges, trans triaccumulaor spring &valve kit, 285 Goodyear Duratrac Tires, Standadyne used most fill ups, 15-40W Valvoline every 3-4k
mine quits working after about 20 miles down the road. If you let of the accelerator it starts blowing cold again. It usually begins around 70 mph to stop blowing cold. A guy at O'reilly's auto parts seems to think it's a screen clogged in the line that catches trash in the refrigerant line. Anytime I get back down to 45 mph or less it works great! Any help out there?
My 02 F-250 was doing the same thing. When it was real hot it would quit cooling. Removed the outer compresser clutch plate, removed the small spacer washer (which closed the air gap) & put the plate back on. Works great.
What happens is the clutch end plate wears to the point where the electromagnet can no longer maintain engagement reliably. Decreasing the gap reduces the force required to stay engaged. You can buy a new end plate if yours looks too chewed up, but just correcting the gap works and will buy you some extra time.
2003 F-250 XLT Crew Cab 7.3L, Chrome BigTex Grille Guard, Quad pillar - 3 ISSPRO gauges (trans, pyro, boost) and DP-Tuner F6; Roush fuel pressure / temperature / oil pressure gauges, Ford Severe Duty AIS, 31 row 6.0 transmission cooler, ScanGauge II, Marinco mod, Walker BTM
Last year, it was the plug and pressure switch. Changed those out, and it worked fine till a couple weeks ago. Checked the gap...it was .055, took out the washer, new gap is .014, and all is good...no cutting out.
__________________ 2003 F-350 SD, 7.3 PSD, Auto, CC, LB, SRW, FX4, 4.10:1 Genuine Gear Ring and Pinions, Detroit Truetrac Differentials F&R, FabTech Ladder Bars, SuperChips 1705, EBPV delete, IH Up-pipes, Magnaflow 4" Exhaust, Ford AIS Air Cleaner, ISSPRO Boost, Trans, and EGT Guages, Kenwood DNX6160 with Nav & XM, Ford AIC, Brite Box, 203* T-Stat and Billet Housing, Tru-Cool 4739 MAX, ProComp StageII 4" Lift on Eagle 589's with 35x12.50x16.5 BFG AT KO's, Centramatics, WeatherGuard Toolbox, Rhino Liner, B&W Turnover w/Companion 5th Wheel Hitch & Firestone Ride Rite Airbags, PacBrake PRXB.
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