Oil Pump Problems
Thread Starter
|
Freshman User
Joined: Feb 2004
Posts: 47
Likes: 0
Oil Pump Problems
Hey Gang, on my 90 F250 the oil pump seems to be iffy. When its cold it makes great pressure (in the "normal" range on the oil gauge) when it warms up it goes down near the Low side and the needle bounces until I push the throttle and it makes oil pressure again, I figure the gauge could be phony, but it will start to overheat if it idles without oil pressure. Could the filler neck be clogged or does the pump need replacing?
New User
Joined: Dec 2004
Posts: 4
Likes: 0
sounds like the same problem i have on my 5.0. I was told to check the oil return ports in the heads, they were clear so i think its the oil pump screen. The pumps hard to get at so i think i might try and soak it in solvent (in the oil pan) for a day or two to see if that clears it. if not i will have to remove pan and repace pump and tube
Last edited by CCTeeth; Jan 19, 2005 at 04:00 PM. Reason: spelling
Thread Starter
|
Freshman User
Joined: Feb 2004
Posts: 47
Likes: 0
CC: What solvent are you going to try and soak it in? If you have any luck please let me know! Otherwise I'm in in the same boat with cracking the pan off and redoing pump/pickup
Sparky: how hard was it to replace that intermediate shaft? Is there any way of testing for a broken intermediate shaft?
Sparky: how hard was it to replace that intermediate shaft? Is there any way of testing for a broken intermediate shaft?
Thread Starter
|
Freshman User
Joined: Feb 2004
Posts: 47
Likes: 0
Trending Topics
New User
Joined: Dec 2004
Posts: 4
Likes: 0
They make a special engine flushing solvent...I forgot the name of it, but it is made for stuff like this. I'm going to put the solvent in this weekend, so I don't know how it will work.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Top 6 Best Deals Available on New Fords & Lincolns Right Now
Brett Foote
This Hennessey Takes the Expedition Tremor's Off-Roading Capability to the Next Level
Verdad Gallardo
Top 10 Fords at 2026 Carlisle Ford Nationals
Joe Kucinski
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
New User
Joined: Dec 2004
Posts: 12
Likes: 0
I'm still working at the repairs on weekends (I'm a rookie). I didn't find the broken intermediate shaft til I pulled the oil pan off. In my opinion, if I ever have to take the oil pan off again, I'll just pull the engine (which I'm doing now)...
New User
Joined: Dec 2004
Posts: 4
Likes: 0
studlybilly, we put the solvent in over the weekend and tonight we drained it out and replaced the oil filter. Put some more oil in, fired it up, and it ran just fine. Either the solvent worked, the oil filter had something wrong, or we were just lucky.
Posting Guru
Joined: Mar 2004
Posts: 1,099
Likes: 0
From: Destin/Ft. Walton Beach,
If the oil pressure is better when the oil is thick, it is not the screen. Think about it. The oil would go through a clogged screen easier when warm and thin. Usually, when the oil pressure is low when the engine is warm, the bearings are worn out.