*urgent* oil pressure sender

Synthesis5

Member
:
MX-5 MazdaSpeed
ok i just got off the phone with my mazda parts and service dealer. they told me that the oil pressure sensor is somewhere near the valve cover, drivers side. is that true????? because from my searches on this site i read that its under the car, right near the oil filter. :confused:


see ive been tring to install my AM oil pressure for sometime and i havent been able to because i dont know the thread size that i need for the new sender and i'm not sure where this sender is.
i was under the car one day looking up at the oil filter, and i seen two wires their. i wasnt sure which was which. there was one there with a little green wire going to it and the other one had a little bit thicker black wire going to it. if this is the location of the oil pressure sender, which is which ??

so did anyone hear about this location near the valve cover? (its new to me)

called autometer,summitracing and they dont know anything themselves. i even went to a auto shop and they couldnt figure out themsleves either. so now im gunna need some help from you guys and im gunna need to do it myself now.


HELP!
 
The oil pressure sender is on the back of the block. Look up like you are changing your oil now look to the drivers side of the oil filter, directly accross there shoudl be a small sensor with ONE wire going to it, the sensor looks like a bolt with a wire basically this is your stock Oil Pressure sensor. It is a 1/8th BSPT thread get a metric to NPT adapter if you don't want to retap it. Hope that helps you some.
 
ok i went under the car today, and i found the sensor. the only problem is there is no way in hell to get to it to unscrew. for some strange reason i drained my oil then i wanted to take my oil filter off so that i can have more room to manuever. huh my oil filter didnt want to come off. i sat there for atleast half an hour trying to get it off. nothing happened. so then i noticed the black bar connecting from the block to the chasie i think. so i tryeed to get that off and again no freakin go the bolts where not moving at all and i even used wd-40 on um.

i'm freakin pissed. this is the only mod that has been a pain in the ass to do by myself. i went to pep boys and stausse auto store they were gunna charge me 68 bucks just to hook the freakin sender up for me, fuk that i said, i'll just try to suffer some more by trying to figure out how the hell to get this freakin sensor off myself.

so i quess my question now is what is the freakin easiest way to get this sh!t off. anybody that has done this have any tips for how to get this sensor off??? special tools???
 
FINALLY ! i got the freaking oil pressure sender on and the rest of the gauge hooked up. well except for the gauge pod, still need to order that.

oh yea by the way i ordered my guage pod from jcwhitney, its the universal pod. hopefully it should fit, right?
 
one more thing that i forgot to add..... when i took the old sensor off and put the new one in, i forgot to ground the old sensor (so that my oil light wouldn't come on in the dash). so basically the light doesn't come on and its not hooked up to anything. hmmm strange, but it works with me.
 
the reason it didn't come on is because you didn't ground it. If you ground it you will get the oil light its a pressure switch when it sees I think 5 psi it completes the ground circuit to turn on the light.
 
o ok, one more thing i just wanna check.

when the car is warmed up and idling (700-900) the pressure reads 25, and when im on the highway at (3000-4000) im reading shy of 75. are these around the right pressure readings?
 
sounds about right. Stock fuel pressure at running temps should be around 50 or so i believe so you are reading a bit high or you just have a harder working oil pump for some reason.
 
so will this be in anyway a problem in the long run??? plus not to mention could it be the cold weather conditions that is might be giving a higher reading as well?
 
i've made another post about this (P5 section), but i need this info asap and i want it before i have to drain my engine oil because it's about 10 miles to the motor parts place to get a T-adapter so i can keep the stock oil pressure sender and my new one, but...

i just got my defi gauge today (yay). there was an adapter that came with it to put onto the sender (obviously for a different size thread to the engine). anyone with the defi gauge, did you use this or is the thread on the sender the right size?
 
here is what i did

to keep both the stock pressure sending unit and the
after market gauge functional, i bought a greddy oil
block adapter. the oil block adapter has a 12mm port
for a oil pressure sending unit. you'll have to get a
metric-to-npt adapter so that the pressure sending unit
will fit. the greddy oil block adapter just fits between the
oil filter and the block.

try http://store.racerwheel.org/racerwheel/tp-12002801.html
for the greddy oil block adapter

try mcmaster.com
for the adapter (you may need to call the sales dept.)

i think this is my first ever post. lmao...
 
the greddy oil block adapter works even with the stock oil cooler? ive read conflicting reports...
 
driftingMSP said:
here is what i did

to keep both the stock pressure sending unit and the
after market gauge functional, i bought a greddy oil
block adapter. the oil block adapter has a 12mm port
for a oil pressure sending unit. you'll have to get a
metric-to-npt adapter so that the pressure sending unit
will fit. the greddy oil block adapter just fits between the
oil filter and the block.

try http://store.racerwheel.org/racerwheel/tp-12002801.html
for the greddy oil block adapter

try mcmaster.com
for the adapter (you may need to call the sales dept.)

i think this is my first ever post. lmao...

please elaborate. i'm in the middle of gauge hell. what adapter did you buy to get the o.p.sender to fit into the oil block adapter. i got a SS braided line for this greddy adapter and don't know which size adapter to use for this. please advise. thanks!
 
i just ried to pu the greddy oil adapter on and the bolt for our filter was too long to secure the adapter to. i may either have to cut the filter bolt ar get the threads on tha greddy block adapter bolt deepened if i can
 

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