We are a UK based recovery company with a couple of F-550's, one with various problems. Unfortunately being in the UK means we find it difficult to get technical help so hopefully you guy's can help us. The truck is a 1998 7.3 Powerstroke with an automatic transmission (4R100) with gearbox mounted PTO and Century Wrecker Kit. Problem 1 - Under 1000rpm the truck sounds like it has a dry bearing somewhere (we have looked everywhere!) is this normal? Problem 2 - Does this engine have hydraulics tappets if so are they adjustable? Problem 3 - Would the air conditioning pump still work if the system became discharged? Problem 4 - Does anyone know of a supplier of 19.5" Phoenix wheel trims with pop out centres for the front differential locks? Problem 5 - The vehicle sounds and feels like it has a wheel bearing fault but they all seem ok could it be the tyres (Firestone On & Off Road Tyres)?Any help would be gratefully received.

 

Well on the wheel bearing issue I know they can go bad and not have play in them. It's these new sealed bearings. I've heard several reports of folks that jacked them up and couldn't find any play but the bearings were shot.

 

The air conditioning pump will not work if the system becomes discharged. There is a sensor that will not allow the pump to activate if a low refrigerent level is detected.

 

Thanks people just need answers to the other 3 problems. Once again many thanks.

 

I know alot of people hate those firestone tires. The way they ride and the way they wear. you should podssibly try a new tire mabye a nitto, or a bfg all terrain, I have bfg at's on my super duty and i love them!!
Ken

 

hi there. For the 1st question i need a lil more info. Like under any load, 1000rpm's is low so is there any idle issues, what noises are you hearing? the 7.3 has hydraulic lifters and do not need adjusting ever as they are hydraulic. lemme know

 

The noise is apparent when the engine speed drops below 1000rpm (when ticking over or when slowing down to stop). Someone mentioned that this could be the main gearbox shaft?
Its difficult to explain a noise but it sounds something similar to a loose dry worn bearing running at speed!!!!!!! Also the truck seems to lack power on pull away, someone mention something about fitting a direct drive unit? Does such a thing exist?

 

Can anyone help with the remaining problems?

 

I may be way off, but the ticking sound, could it be the torque converter? I owned my SD with a 4r100 for almost 2 years before I realized it was making a noise. I replaced it over the weekend and I keep thinking it died when I come to a stop. It sounded like a bolt in a coffee can.

 

The truck is fitted with a Muncie Power Take Off unit fitted to the gearbox has anyone had any problems with these?

 

Firststroke, what was wrong with the torque converter that you removed? We got the motor into the workshop yesterday and drained the oil on the torque converter, there is something rattling around inside the torque converter so it is coming out over the next day or two. Are the torque converters repairable? Does anyone know how much a new torque converter for a 1998 Ford F550 7.3 Powerstroke?

 

I have a question for anyone?..I need help.. my truck runs great but everytime i turn on the wipers it dies can someone help me with this?

 

Wow, old thread to dig up...

Anyway, sounds like a possible CPS(Camshaft Position Sensor) issue. Any chance you know if it has a parts store CPS in it?

Get one from Ford or international and try that first.

 

Yeah even if you did a search, the title doesn't tell you much about the problem. That FNG must have been searching forever!.

 

T early convertors all made that noise. Some got replaced by ford, and most didn't. When you change it out it will sound completely different.. Parts house CPS tend to do that when the windshield wipers come on. Not all, but 50/50.

Chet