Compression Ignition Addict
Join Date: Dec 2009
Location: in my body...oooh Sacramento California
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X-man, I would say it's your engine fan. The fact you said it happends when it'e warm out and the AC going leads me to this assumption. I had an '02 7.3 which I pulled alot in the Kansas summer and the fan was just to the temp where it needed to cycle but was still not quite locked in and it was up and down for several minutes until it was back to normal operating temp. My AC would get warm while it cycled. I had a recall on the fan clutch and Ford installed a new clutch, all is well. They told me when the engine fan clutch locks in, your engine will lose up to 60 hp.
you dont happen to have the recall number do you?
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2002,7.3L,6sp,cc,lb,xmonitor,1705,zoodad,AFEstg2, wicked wheel,hpx ss line,straight pipe,325/65r18 mtz,kmc 18x10,6.5"procomp lift & track bars,firestone bags,viair 480,5g tank,train horns,70g transfer tank,leer shell,12k warn & hidden bumper kit,05-07 H-D headlights,35W 5K HIDs in head/fogs