93 s10 blazer 4.3 oil sending unit removal??

[mcomp93]

I cant seem to get a wrench on it. Its hard to get to. its under the distributor, and it seem like the intake has to come off for me to take out the distributor just to get to the sending unit? need help!

[BlazerLT]

First off, why are you replacing it?

[mcomp93]

because its bad! lol

[BlazerLT]

Bad as in?

[Mikado14]

You should be able to get to it with a crowsfoot and an extension.

[mcomp93]

Thanks Mikado14, i got it, just had to take out the distributor. then i could get to it fine.

[drewgibs]

hey I believe my sending unit is going bad too (i get a lot of oil pressure fluxuations and I'm hoping its just the sending unit). Anyways I went to NAPA and they said they have both a 3 wire and a 2 wire sending unit listed for my 96 VIN W 4.3L blazer and I didn't know which one it takes, what does yours take? If you could give me a part number that'd be great too. Thanks.
-Drew

[BlazerLT]

also, I though my oil sending unit was bad too but it was a dirty oil filter going into bypass mode causing the oil pressure to flicker.

How old is your oil and oil filter?

[mcomp93]

hey drewgibs, The part Number i have for the sending unit is S4088. Its for the w 4.3. good luck tell me how it gose!

[mcomp93]

hey BlazerLT Thanks for the info but, I knew to begin with It was my oil sending unit, Runs great now! Thanks for the info, That may come in handy later on. thanks again!

[quaddriver]

rule of thumb: unless you are fond of paying snapon about $50 for the 4.3 sender, yank out mr happy distributor and its an easy grip for a medium metric crescent wrench.

AND

its a great time to install a t fitting to allow a real oil pressure gauge instead of the factory installed abortion.

[drewgibs]

can you give me more information about installing a t-fitting and how to use it to give a more accurate oil pressure reading? do you need a new gauge? what are the parts you need?

Originally Posted by quaddriver

rule of thumb: unless you are fond of paying snapon about $50 for the 4.3 sender, yank out mr happy distributor and its an easy grip for a medium metric crescent wrench.

AND

its a great time to install a t fitting to allow a real oil pressure gauge instead of the factory installed abortion.

[quaddriver]

once out, take the extension out. use a 2" 1/8th npt nipple to raise above the manifold, then put a t fitting on that, screw the sender in the 'side' port so it now 'points' back at a 45 degree angle between the dist and firewall. then install the 1/8th npt fitting that any mechanical oil pressure gauge will use - I recommend sunpro - appx $25 at advance.