First check the oil to make sure it's not low. Then, check the wire to the sending unit to make sure it's not loose, frayed, or corroded. After that, if nothing seems wrong the sending unit is probably bad. If you really lost oil pressure, you'd hear it.
In addition to Master486's suggestions, you may simply want to clean the connector stem on the oil pressure sender and the inside of the connector cap. I do this every time I do an oil change. A few shots of brake cleaner, swab with a Q-tip, then a few shots of electrical cleaner, and swab with a Q-tip. If the cap seems a little loose, you could lightly crimp it so the fit is snug, but not overly tight so you can't disconnect it...
I'm on my 3rd sending unit, if I rev the engine above 3,000 rpm the gauge will drop like a rock and the idiot light comes on , checked it with a mechanical gauge and it holds about 60 psi hot, I'm going to do the gauge mod this time.
yep ,must be common with these motors/sending units, cuz my factory guage does wierd stuff like some times it reads perfect pressure, or other times, it says theres low pressure, when really my engine is fine, and at WOT it drops like a rock, then goes back up.
Okay I replaced the sending unit and then i had a leak....I took it back off and noticed a crack in the unit.....i got another and put in on but while tightening the cast aluminum on the engine broke off in my hand.......is the oil filter assembly replaceable?????
Well, you overtightened your sender. The sender/oil filter adaptor is pipe thread, which is tapered, in other words, it's not like a bolt where the threads are the same all the way down, they actually get bigger up top. The sensor is steel and the adaptor is cast aluminum. If you overtighten the sender, the threads are bigger the more you tighten it and eventually you will expand the threaded hole to the point where it will crack/break.
Ask me how I know...lol.
I replaced mine and it really isn't that bad of a job. I replaced mine on a full-frame car-I would imagine that replacing it on a car with shock towers might be more of a PITA but definitely doable. I got the part from Ford but you could probably get one from a boneyard, as almost any 4.6 will have these adaptors. Markviii, Town Car, Crown Vic, Grand Marquis, some Mustangs will have this adpator as well as the T-Birds and Cougars. If you remove one from the boneyard it will save you a bunch because I believe when I got mine it was over $200 where the junkyard part is like $20. While it's off you might as well replace the gasket too.
Drain the coolant down and you don't even have to drain the oil but it's not a bad idea. You do have to remove the filter though. It's pretty straightforward: remove the old part/gasket, replace with new part/gasket. When replacing the sender on the new piece, use a good-quality thread sealant such as Permatex-and DON'T OVERTIGHTEN IT.
Just snug it up good-the thread sealant will keep it from leaking. I use steel-braided hose to a mechanical oil pressure gauge inside the cabin of the vehicle. With this setup I have absolutely NO LEAKS and NO PROBLEMS after almost 100K miles. Sorry to hear that this happened to you, but it happened to me and I got my ass out of a jam-I'm sure you can too.
First of all Thankyou guys for letting me join the group, I purchased a non running 1996 cougar with a 4.6. I was told it had been sitting for 12-18 months, So we replaced fuel pump,fuel filter, crank sensor and the PCM, We checked fuel pressure with gages great pressure, checked for...
First I want to say just about everything I’ve fixed so far on our new-to-us T-Bird cane from suggestions, and past posts here. This site has been a huge help! I did read a lot of old posts regarding the code I’m having, but nothing seems to have a solution, nor my exact symptoms..
Since day 1...
Hey guys, it has been quite a while but it's good to be back!
I am in need of some guidance regarding a recent engine swap in my 97 bird.
The back story:
It has been quite a while since I have posted, mostly due to the fact that my motor exploded roughly 6 years ago. Since then the car has...
I've been screwing around with this all day. Short of removing the cam, is there any way to get to the lower head bolts on this car? My socket wrench (all 4 that I've tried) is obstructed by the shock tower. I had a hell of a time removing one of the valve cover bolts on the bottom, but...
Hey guys; I've been posting in a few threads talking about the various mods for our cars, and I thought I'd start a thread where we could pull a bunch or the info together, and link to the various Howto threads.
So, in our best free-for-all fashion, lets discuss the various mods, and kick...
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