87/88 2.9 oil pressure sender locations

piotrsko · #1 (**permalink**) 11-29-2008, 06:24 PM

I've looked and searched the forum but haven't found out all the places an oil pressure sensor can hide on a 87/88 2.9 ( engine may not be correct model)

In the "normal" place next to the drivers engine mount I have coolant and a red wire with a white tracer. Makes a lovely coolant pressure gauge. No oil mixing and no coolant useage

some mention theirs is on the drivers side midway down. Pictures would help

thanks in advance

TigerDan · #2 (**permalink**) 12-05-2008, 01:37 AM

It should be on the driver's side, just in front of the engine mount. If there's coolant coming out of that hole when you take the sender out, then you've got something strange going on there...

Lead Head · #3 (**permalink**) 12-13-2008, 10:15 AM

On my truck if you look under neath towards the driveside, on the side of the engine is a fairly large round metal canister with a wire sticking out of the center. That is the oil pressure sending unit on mine.

piotrsko · #4 (**permalink**) 12-25-2008, 09:35 AM

I gave up looking for it. after Xmas, we'll take it down to the quarter car wash and blow about $10 cleaning off the grease and look again.

I'm guessing if it isn't ticking and the valve covers weep I must have pressure somewhere.

TigerDan · #5 (**permalink**) 12-25-2008, 11:26 AM

Didn't know you still hadn't found it. Here's a diagram that shows it:

Hopefully when the crud is cleaned away it'll be more clear. Yours' probably doesn't have the Oil Level sender as shown, but the pressure switch should be in the location shown above. What about a wire going down to it, is there one just hanging? Perhaps a previous owner removed the sender because it was leaking and just plugged the hole...

piotrsko · #6 (**permalink**) 12-25-2008, 05:50 PM

known things: engine swapped a while ago, by P.O.. original oil pan because sender is there for oil level and it works. Location shown in the above post has a oil sender in it and that is the one that leaks coolant when removed. taking the wire for the oil press coolant sensor and grounding it affects the oil pressure light on dash. couple of hundred miles on it so far, still no mixing in either coolant or oil, not seriously consuming oil except for noted cover leaks..

millions of years ago, Ford used to put tapped plugs all over their blocks to machine oil galleries, but apparently they stopped that on this engine, since I can't find them, yet. If I can find one I put the OP sensor there and hard wire it to the cluster wire.

Lead Head · #7 (**permalink**) 12-25-2008, 06:12 PM

Maybe the guy who did the original engine swap put the oil pressure sender in the wrong spot? No coolant should come out of it.