2000 7.3 new noise

SykoStroker06 · #1 (**permalink**) 08-08-2010, 06:56 PM

This posting is about my brother-in-law's 2000 F-250 PSD. He has a Hypertech programmer, K&N intake kit, and magnaflow exhaust with no cat. He just put an a remanufactored heavy duty transmissions from a place in Denver (can get the name if needed). With an upgraded intercooler, torque converter, and tranny cooler. Whenever the truck is under a heavy load (up mountain with truck camper on back), when he lets off the throttle he is getting a growling noise. Any ideas? Truck won't do it unless it is under a lot of load. Any and all feedback is appreciated.

SykoStroker06 · #2 (**permalink**) 08-09-2010, 01:08 PM

Bump. Anyone?

powerhoghp · #3 (**permalink**) 08-09-2010, 01:41 PM

Is it a steady growl or does it seem choppy? If it is choppy, that is likely compressor surge. If it is steady, it could be related to the trans.

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