XLT-89 351 oil pressure problem. - Ford Forums

kinander · 08-14-2005, 10:23

>Hi. I'm a swede living in St.Maarten, Caribbean. I recently bought a Bronco >XLT -89 with the 351cc engine. I have a problem with the oil pressure. I've >change the sensor and put in a VDO instrument instead.
>
>When cold it's showing 20 PSI dropping to almost 0 when warm.
>I tried doing a engine flush witch got the oil pressure up to 40 PSI for a >while but the dropping again.
>Anyone that has an idea ??

During the weekend a decided to take the oilpan down. Wasn't as hard as I tough first. I turned out that the screen was clogged. So after I put in a new screen and oilpump I now have a pressure av 60 psi cold and 15 psi when its warm on idle.

bertha66 · 09-21-2005, 10:12

Sounds like you got it fixed, but what was the oil pump pugged you with? My 66 F100 2wd did the same thing and the pump was pluged with what was left of the valve seals.

**Freshmeat** · 09-21-2005, 12:18

Quote:

Originally Posted by bertha66

Sounds like you got it fixed, but what was the oil pump pugged you with? My 66 F100 2wd did the same thing and the pump was pluged with what was left of the valve seals.

It's easy for pick-ups to get clogged with oil sludge. I can honestly say I've never had one plug from the valve seals, though! Ha!

My Jeep was running fine, but I ran a system flush anyway. It broke up all the gunk and plugged my pick-up, so I had to pull the pan, pick-up, and pump and clean it all out. It was incredibly agitating, but at least I know, now, that everything's clean.