1998 Ranger 4.0 l oil temp guage

[kend650]

Does the 98 4.0l have an oil temperature sensor? If so, where, and if not any ideas on how to install one?

 

[franklin2]

Never seen a factory truck that had a engine oil temp sensor. Probably because the oil temp of the engine is going to follow the water temp fairly closely on a gas engine.

 

[kend650]

Thanks for the feedback.

 

[MaicoDoug]

The oil pressure switch sensor is located on the driver's front of the block, just above the oil pan. Lay on the ground looking up, it's most likely the place where oil is leaking. It's also a good place to install any oil sensor you want. It's a 1/4" NPT with a single wire & connector coming off of it. I just tee'ed in a remote sensor keeping the OEM oil pressure switch. I agree with Franklin, oil temp is useful when hauling a load with a turbo mainly. Otherwise yes, oil temp will track with the water temp.

 

[Uncle Gump]

If you're so inclined to add oil temp... an oil filter sandwich adaptor would work nicely.

 

[MaicoDoug]

AHHA! So i'm on my way to the junkyard to pull an old one bring it home and cut, measure a lower rad hose for a 4.0L, and I see a 38mm inline hose temp sensor block in your pic! Just like the one I already have, Thx UG!

 

[Uncle Gump]

AHHA! So i'm on my way to the junkyard to pull an old one bring it home and cut, measure a lower rad hose for a 4.0L, and I see a 38mm inline hose temp sensor block in your pic! Just like the one I already have, Thx UG!

That one is for the lower hose on my Bronco II. I just used the auto parts online to look up the hose and review the specs. The specs stated 1 1/2 hose. 38mm is close enough.

 

[Uncle Gump]

Another thing to consider... if you have a single wire temp sender... you'll need to add a ground wire to your hose adaptor.

You can see in my Pic I drilled and tapped a hole for a 1/4-20 bolt to add a ground wire.

 

[MaicoDoug]

Exactly, it needs a ground reference and using the coolant does not work as well as a wire. I've pulled some aluminum heads off one these early ford V6's with aluminum heads. Lots of galvanic activity no doubt. Caused a divot from the water jacket to the combustion chamber which is why it was drinking water.

Thanks again UG. Hope all is well with you these days. -Doug

 

[gaz]

@MaicoDoug
Hello,
Which Ford engine used Aluminum heads?

 

[MaicoDoug]

Ford Duratec V6 engine

Was in some kind of 90's station wagon