Ford 7.3L Power Stroke (1999-2003) :: Ring And Pinion Change?
Jan 26, 2011
I have a 1999 7.3 psd F-450. It's rigged out for welding with a Lincoln SA-200 engine driven welder. My overall weight is approx. 11,500 lbs. and I rarely tow with it. It has a 4 speed automatic and 4.89 ratio gears in it now. I bought it with 245/70/19.5 tires. Stock size is 225/70/19.5. I am going broke trying to keep the fuel light from staying on all the time, and I am considering changing the gear ratio. My questions are; Is this a wise investment, as far as cost vs. gain? I also need to know if it may create a higher risk of other mechanical failures? I need to research what other ring and pinion ratios can be used in the ford 10.5 12 bolt rear axle. Money is hard to come by these days, and even harder to keep. I cannot afford a costly mistake if the funds can be more effective elsewhere.
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I'm sure there is something on this somewhere but can't seem to find. Getting ready to change injector o rings and see where people say to drive it 200 miles to get it running right again. Well, I am in the process of a conversion and have no tags or insurance on the truck. Trying to fix issues before I spend that money on it because don't know how much I am going to have to put in it to fix the issue's.
Is there a way to bleed out the air so I don't have to drive it 200 miles? Also, how long will it smoke after the injector change to see if it is actually fixed? I know I should probably see a big difference is ICP,IPR and such. Already know it has leaks in the turbo up pipes which will have to be dealt with too.
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My fuel filter lid o-ring keeps blowing out upon hot start, this has happened 4 times now once last week, I replaced filter and all was ok until Thursday it happens again I change the filter allis fine! Now today!!!!! TWICE I have to install new filters because the o-rings are blowing outside the bowl lid! I'm using the same BALDWIN PF7698 filters I've used for years, my reg. Is set at 75psi and holds steady! No spikes but I haven't been able to watch it when the o-ring blows out! Injectors and o-rings are new (<1000miles) no problems during operation at all!
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Having trouble getting large plastic nut to start threading on top of the fuel tank sending unit, after doing in tank mods.
It just doesnt seem to want to start threading on properly. Its always cocked when it grabs, and after a while opposite side pops up and it falls off. Not sure how to get it back on there
Dealer has new ring for 18 bucks, maybe mine is warped or dried up since 2000?
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My front carrier is leaking at the bottom of the Ring and Pinion Cover. I am going to pull the cover and replace the gasket. I am also a believer in Amsoil full synthetics, should I use the Severe Gear 75W-90, Severe Gear 75W-110 or the Severe Gear 75W-140. How many ounces does it take. I presume to fill until the bottom of the fill hole? What are the torque specifications for the bolts?
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If I switch to synthetic will I be able to stretch out my changes? Currently do it @ 5k miles with rotella triple, was thinking about trying T6 and extending changes to 8k miles
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Mechanic at work told me to run 10-15 k.
My truck is my daily driver for work and such. Occasional 300 mile round trips to see family.
Last time I changed my oil was in June. And I've put about 6500 miles on it.
I run royal purple 15-40
I just not sure what to believe. Maybe someone has a link to an article ?
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I was getting ready to replace the carrier bearing and noticed the rear pinion seal is leaking. Before attempting the replacement myself, I would like some opinions on the noise in the video below. Is this normal? I am confidant I can replace the carrier bearing and pinion seal, but not sure I have the tools for anything else.
YouTube ...
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Will it work? My ring and pinion is fubar and I found a 06 with 99K local. I know I would have to change the brakes to fit my 16" wheels...Anything else y'all can think of?
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I'm getting ready to change the glow plugs in my dad's e99, 196k on the clock. When I pulled the air intake tubes I found some oil in the turbo:
The inlet tube also had a bunch of gunk in it too:
Does this look like it is caused by the PCVor is it a bigger issue?
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I did a bunch of reading before I bought this truck, and the seller said it really just needed a new battery as far as he could tell... When I bought it, I drove a considerable distance with no problems, other than it seeming to be a little sluggish with acceleration.
I have not seen any leaks anywhere, and all of the visible reservoirs appear to be nominal. No odd exhaust (really clean/invisible, in fact). No weird sounds, and running engine has a pretty even sounding cadence.
I initially changed all of the shocks because the old ones appeared to be original and were severely corroded/rusted. There is some surface rust elsewhere as this truck was apparently used in agricultural setting.
I replaced the battery and it was starting fine for a few weeks, but it would intermittently crank with no start, and would sometimes die within a few minutes after starting. I also charged the a/c with 134a, and it is blowing cold.
So... yesterday, I changed the oil, and installed a Fram Tough-Guard filter and precisely 15 quarts of oil (dipstick shows right level). I also changed the air filters, and disassembled and reassembled the air-cleaner to turbo hoses. While the hoses were disassembled, I took off the relays (AIH/GPR) and reinstalled an aftermarket GPR (crappy foreign-made one). No start. Several times. I reinstalled the original GPR. No start. Several times.
Even tried to jump it from my running Explorer. Still no start. (When I say no start, I mean that it will crank, but not turn over).
I am scheduled to take this truck into the dealership tomorrow for the recall issues (CPS), but I can't drive it there right now. Did I mess something up with the crappy GRP? Why wouldn't it start after reinstalling the original?
Another observation -- I had my batteries tested just now, and they are around 60%. I have ordered a new Alternator because this one looks original and is likely not charging the batteries. Still, I figured if I jumped it, it would start.
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Does the yellow injector solenoid cap change color with mileage and age?
I have a guy that has a set of injectors out of a truck that got scrapped. He's estimating mileage at 40k based on the fact that they caps are still yellow claiming that caps start to discolor around 60k and they get darker with miles/age.
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I just picked up an 09 F250 a couple of weeks ago and I was planning on replacing all the fluids since I'm not sure when everything had been done in the past, but it did pull a camper 5th wheel. It has about 93000 Km/57000mi on it
One thing I noticed when reading the manual is that a rear diff fluid change is not necessary on these rear axles unless they have been submerged in water or repaired etc..
Just after I got it I noticed the pinion seal was leaking. It was fixed under warranty but the dealer did not replace the diff fluid as they said Ford will not pay for it.
My question is do you think I need to replace the diff fluid or should it still be good, given the relatively low mileage.
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Recently had a rear pinion leak and replaced the seal and nut. I jacked up the truck, took off wheels and felt the drag so I could duplicate once i had the new seal as I tightened the nut. I've done this only once before on my F150 years ago, but when I put the driveshaft back on and test drove it, i had shudder when not under load. So when I let off of the accelerator, it had shudder and more the faster I was going.
Obviously thinking this is a preload issue with the rear axle but would this be caused by tightening too much or too little. I had no issues before so I would think that the driveshaft itself is not the issue. I can't confirm that I got it bolted up in the exact same manner as before in relation to the flanges but still wouldn't think that to be the issue.
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I installed a BPD EGR cooler about 4 years ago just as a preventative measure (along with an oil cooler) in my '06 F-250 6.0. About 6 months ago some coolant was found to be coming down the rear of the engine and onto the garage floor but only in the mornings after cooling down and even then not every morning.
A couple weeks ago I did a coolant flush and put the red ELC coolant in and now I can see better where the coolant is coming from. It appears to be coming out from the O-ring between the cooler and the intake manifold. I did check the torque on the stud and bolt and they are tight.
Is there a way the drop the cooler enough to install a new O-ring with out going through the whole process of removing the intake manifold and everything that is associated with that? The thought is daunting...
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I am tearing down my junkyard engine to prep it to put into my truck and I came across this on the rear main seal... is this a wear ring?
It kinda looks like a oil slinger. My new seal is on the way so I have nothing to compare it to.
I don't want to be yanking on it if it's supposed to stay.
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What is the tool part number for a good pair of snap ring pliers that are heavy duty enough to remove the snap ring from inside an 05+ 4x4 front hub? I have broken two pairs of regular snap ring pliers attempting to remove it. The snap ring itself is roughly 1/8" thick and copper plated. It really wouldn't be that difficult to remove, but that collar on the spline that it has to pass over is thick too and it is whipping me something serious.
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I need to remove my EGR valve to clean the unit of carbon. While there I will be removing the intake elbow to check if I have the throttle plate installed on my engine. What the part number is for the gasket / o-ring that seals the elbow to the intake manifold??
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Just started. Replace fuel pimp and bracket 8 months ago. Now, three times in two days ...freely cranks, but does not fire. It has been suggested by a key man that my ignition key "Ring Transponder(??) is failing, about a $50.00 part.
Any links to a step-by-step to where I could do this myself? ($$$). I don't know what to call it, so it makes it hard to search online. the part he referred to in under my ignition switch shroud...but that"s all I know. (I was driving when I talked to him and forgot the exact term he used (I'm old, and easily confused by anything post ignition points and condenser)
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I had my oil changed at 40,000. I am at 42,500 right now . My " change oil soon light " . Seem like a little soon ! Plus I am 5 hours from home on a ski trip. I have checked oil level it fine. Will I be fine to drive it home 5 hours back to my local dealership for oil change? Or should I find a place up here? What would cause the light to come on so soon ? I am new to this truck . My old 7.3 did not have all the BS that this truck has .
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Last November I forgot to plug my truck in and it got down to 0, my girlfriend tried unsuccessfully to jump start it. When I got home I jumped it and got it running. I took it down to a heated shop to troubleshoot the glow plug circuit. I discovered it was not getting 12v to the glow plug relay. Also I started it and tried to back it up in the shop, when put in reverse it killed the engine, not lugged it down it was like you shut the switch off.
Also I discovered if you turn the lights on it kills the engine immediately. It will not crank with the lights on either. So far I have replaced the computer,ignition switch,batteries, and cam positioning sensor. Now comes the weird part!! I decided to get it running and pull the bulbs out of the back up lights I pulled the drivers bulb first then the passengers side bulb. When I pulled the passengers side bulb it killed the engine.
It is not my daily driver so it still sits in my shop. I have a hunch it's a ground issue but I've checked and cleaned up all the grounds I can find and it still has the problem.
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