Ford 7.3L Power Stroke (1999-2003) :: For AC Optimum Low / High Pressure Readings?
Jun 11, 2015
What are the most favorable low-side/high-side pressure readings for the AC when fully charged?
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Jun 11, 2015
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Ford 6.0L Power Stroke Diesel :: High Pressure Rails - ICP Readings Mostly Below 100 Hot
I have replaced hpop, lpop gears and cover, stand pipes, dummy plugs, rebuilt high pressure rails, and i still have issues. The icp readings on torque pro are mostly below 100 hot. I am clueless... I ordered the icp air fitting but it wont be here until tuesday.
View 9 RepliesFord 7.3L Power Stroke (1999-2003) :: 252k Not Giving High Ohm Readings - Replace?
Replace them? Have a new set on the shelf, however, the 252k ones that are installed now give no high ohm readings.
View 9 RepliesFord 7.3L Power Stroke (1999-2003) :: High Pressure Power Steering Hose
My high pressure power steering hose just blew at the "B" nut at the pump. Meaning, the fitting is still in the pump but the line is out. Do I need to replace the whole line or is there a retainer I can swap out?
View 14 RepliesFord 7.3L Power Stroke (1999-2003) :: High Pressure Power Steering Line Blown?
I just replaced my 3rd HP power steering line last night( 3rd in 300K, always blows the same point....fitting comes apart where it attaches to the pump.
I'll start, mine have gone about 100K plus or minus 10K, almost thinking about making it a 100K maintenance item.
Ford 7.3L Power Stroke (1999-2003) :: High LPOP Pressure - 75 PSI With A Warm Engine
I noticed this evening that my low pressure oil pressure was much higher than normal. I have a LPOP gauge that typically reads 12 psi or so at idle This evening I was seeing 75psi with a warm engine. Every little acceleration pegged the gauge over 100psi.
The factory non-functioning gauge says that everything is normal.
I am about due for an oil change. I was thinking that I would change the oil and filter as soon as possible and temporarily plumb in my mechanical gauge to see if the high pressure reading is real or not. I replaced the stock LPOP about 3 years ago with a melling and everything has been golden up until now.
Ford 7.3L Power Stroke (1999-2003) :: Injector Cup Causing High Pressure Oil Leak
I just replaced my injector cups a month or so ago and also injectors with some lower mile injectors. but now 3 weeks later still not getting any pressure at icp. I have dead headed pump got 3k plus but when i block off ether head i get no pressure. i have pulled injectors and checked for orings and they are fine...
View 2 RepliesFord 7.3L Power Stroke (1999-2003) :: Testing High Pressure Oil System / Air Coming Out Of CCV
'99 7.3, 258k miles, looses oil fast, oil found in coolant (though not a lot) and the fuel bowl is full of oil.
I re-ringed the oil cooler. Most of the coolant and oil is drained. The HPOP holds its oil level and does not leak down.
Someone shared the below test. Though it says #4 ORB, the actual thread on my IPR is #8. I removed the IPR and threaded in the #8ORB to air hose adapter. I regulated the pressure to 20 psi. The air is rushing out of the CCV.
I suspect I am missing something in the below test and that I'm pushing air back through the low pressure oil pump and into the crank case.
The test shared with me elsewhere:
Apparently someone named "Cody" on the forum did a test and it was labeled that way.
AIR TESTING THE HPO SYSTEM:
7.3L Powerstroke engines may experience hard start and or no start issues. In some cases the no-start issue may occur only with the engine hot. If the observed ICP pressure during cranking is less than the required 500 PSI, then the problem is in the high pressure oil system.
One of the first checks that should be made is to remove the plug from the top of the high pressure oil reservoir (in front of the fuel filter) to observe if the reservoir is full. If the oil is standing within an inch of the top of the reservoir, then the problem is in the high pressure oil system and could be caused by one of three things:
- The high pressure oil pump itself
- The IPR Valve
- A high pressure oil leak
Tools: Adaptor ORB #4, Air Compressor capable of maintaining 90-100 psig, Air Line Adaptors which will allow connection to the #4 OBR , IPR Test Harness, Grease Gun Whip or any whip with a .0625" NPT.
Remove the IPR valve and insert the ORB #4 Adaptor. Attach Shop Air and pressurize the system. Wait for approximately 30 - 60 Seconds while the air travels throughout the HPO System. Listen for air escaping through the Oil Fill Tube (cap removed).
External high pressure oil leaks would have, of course, been obvious. The primary concern is internal leaks under the valve cover(s). These could include leaking injector O-rings, or leaking injectors. Listen for any air escaping under the valve covers and correct if present.
If the center injector O-ring has failed, high pressure oil may be forced into the fuel system. Remove the fuel filter cap and observe for air bubbles in the fuel. If necessary, individual fuel lines running from the fuel filter assembly to the cylinder heads can be disconnected in order to isolate the problem to which side it is occurring.
2. 7.3L: If no air leaks are observed, the next step is to isolate whether the problem is with the IPR or the high pressure oil pump. Remove the IDM fuse or unplug the IDM or injector connectors at the valve covers to prevent starting.
3. If this test does not assist in diagnosing the issue, remove both valve covers and witness oil from the deflectors as being uniform, look closely at the injector base for any sign of air or oil escaping during test. This is an indication of a loose injector or O-Ring failure.
The same can be done at the ICP Ports (Oil Rail) on either side to determine leaking O-Rings in that Bank.
Ford 7.3L Power Stroke (1999-2003) :: Fuel Rail And High Pressure Oil Cross Over
Next mods are for the fuel rail cross over and the high pressure oil cross over. I see the unused ports will come in handy.
Fuel delivery? any specialty mods to run the fuel lines? I see it's a #4 ORB fitting. Anyone ever use a "T" or a splitter off the fuel bowl to have a quad line set up?
Saw the FRx from RiffRaff .... not sure how it eliminates air from the system 7.3L Diesel Fuel Rail Crossover? (FRx) 99-03 Powerstroke
Ford 7.3L Power Stroke (1999-2003) :: Intermittent Electrical Voltage Readings?
My Volt gauge on the dash has started reading around 10V with the key on waiting on the GP's. Batteries read +/- 12.6V with a DVM in a static state, no key.
But, quickly as best as I could see the reading on the DS battery drop to around 10V with the key on, GP's cycling. Cranking drops down around 8Vish.
After starting the reading on the DS battery is back up to 10V. This lasts anywhere from 30 seconds to a few min. Then it jumps up to the expected 14.6V reading.
I cleaned up the battery terminals and clamps while doing my turbo,and all the connections are tight.
Ford A/C :: Low And High Side Pressure Readings?
1999 F150 .... Been troubleshooting ac on my Dad's truck. Read the FAQ and after going through all the diagnostics on the ac (low-pressure switch, high-pressure switch, ac clutch relay, coil resistance all OK) I found issue with the clutch gap. I removed the washer in the clutch and put everything back together and the clutch is engaging properly now ( the gap is around .020 now) and seems to be working ok. I borrowed a set of gauges from a friend and want to verify the low and high side readings to see if the charge is adequate. Getting about 48F air out of the vents with outside temps around 85F. What the low and high side pressures should be running at that outside temperature?
View 4 RepliesFord 6.0L Power Stroke Diesel :: 2003 - Weak HPOP / High Pressure Oil Leak?
My 03' 6.0l hpop only makes about 1700 psi at wot, at hot idle the ipr is 25.1 and the icp is about 580. It runs pretty good but it seems the crank time to start is getting a little longer sometimes, other times it fires right up. It makes no difference if its hot or cold. Do pumps get weak or do you think I have a leak?....
View 1 RepliesFord 6.0L Power Stroke Diesel :: 2003 - Reconnect High Pressure Oil Line To Rail?
I've found everything there is to know about disconnecting the high pressure oil STC line from the oil rail on the early 6.0's, but I can't find anything about reconnecting them. Do you simply press it back on? Should there be an audible "click"?
View 14 RepliesFord 6.7L Power Stroke Diesel :: Optimum Gear Ratio For DRW - 3.73 Or 3.55?
I got burned with a smoker back in the mid 1980's and have been hesitant to come back. I am currently pulling my 5er and my enclosed gooseneck with a 6.2 gasser SRW. It has the 3.73 gears in it...not the best for towing.
I am thinking about ordering a new SD DRW 2wd with the 6.7 PSD.
Both my trailers are rated at 18000 GVW, what would be the best ratio to order? 3.73's?? 3.55? Fuel mileage will be what it will be with what ever ratio I go with. The truck will be mainly a puller. Not a daily driver.
Ford 6.0L Power Stroke Diesel :: 2007 - Rough Idle - No Power Till Optimum Temp?
I have 2007 6.0, rough idle starts, rough and no power till engine reaches running temperature, runs great after that. If the engine is off for half hour, and restarted, runs rough again till engine temp is back again.
View 3 RepliesFord 6.0L Power Stroke Diesel :: Oil And Water Reading Climbed About 15 Above Optimum Temp On SG?
The oil and water readings on my SG have been gradually climbing for the last few year to where they are about 15* above the ambient temperature after sitting over night. My question is could the values for the other readings be getting high. For instance going down the road at 65mph my ICP was 1250 and my IPR was 62.
View 3 RepliesFord 7.3L Power Stroke (1999-2003) :: Low Power - Fuel Pressure?
Low power on my 2003 7.3 F350. The truck runs fine but I can tell it is low on power (seat of the pants). I figured it to be fuel related so changed fuel filter and oil with no change. When that didn't work I installed a fuel guage and this what I found. Key on no start fuel pressure 45 psi. Start truck the pressure will get up to 61psi. Under a load it will drop down to the low 30s. I have dropped the tank mixing chamber screens clean and so was the tank. Changed fuel pump and now under a load it drops to the high 30s. Does this sound like the fuel pressure regulator is leaking by and causing low pressure under a load? Truck is stock besides superchips 1705 programer.
View 9 RepliesFord 7.3L Power Stroke (1999-2003) :: Oil Pressure On Startup?
I just bought a 03 7.3 Ex w rebuilt motor done really nice .. it has a Terminator HPOP .. and pressure spikes to 80/85 on cold startups and spikes until engine warms up .. engine only has couple thousand miles on it .. is that normal ??
View 1 RepliesFord 7.3L Power Stroke (1999-2003) :: Just Died Then No Start And No Oil Pressure
Ok so this past Saturday I drove the truck about 40 miles round trip to get fuel and came back to the house to pick up my tux for a wedding I was in that afternoon. On the way to the wedding I went about 10 miles down the highway doing about 65-70 mph and all of a sudden I heard the engine just shut off. No stutter or anything.
Went to restart and nothing just cranks. had to call and get a tow back to the house real quick and grab the excursion and head to the wedding. When I got home on Sunday I hooked AE up and started to poke around.
RPM around 150-170
Batt Voltage 11.5-12
IPR up to 65%
ICP 0 (have tried to unplug and start) (sensor is dry no oil bleed through)
Buzz test is good all injectors are strong. I am sure it is the lack of oil pressure but I dont know why. I can get more info from AE if needed.
Ford 7.3L Power Stroke (1999-2003) :: Where To Install Oil Pressure Sensor For Gauge
I need to install an oil pressure sensor sending unit. I've already occupied the 1/8"NPT test port on the rear of the oil cooler, where else might I be able to tap into oil pressure? (LPOP)
View 4 RepliesFord 7.3L Power Stroke (1999-2003) :: Typical Boost Pressure / Mostly 0 Unless Under Acceleration
I just recently installed a CTS2 Insight and wondering what the typical boost pressures I should be seeing without a load just normal driving. Right now I am seeing mostly 0 unless under acceleration then it goes up to 10 psi if I floor it I am getting 15psi.
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