are either of these worth purchasing? i will be checking my grounds and tps after this post.





Mazda RX7 FC S5 2nd Gen Oil Metering pump (OMP)





http://cgi.ebay.com/ebaymotors/Mazda...Q5fAccessories





89-91 MAZDA RX7 FC3S HIGH VOLUME OIL PUMP 13B





http://cgi.ebay.com/ebaymotors/89-91...Q5fAccessories

you dont need the internal main oil pump,, but you MAY need the external oil metering pump if yours is faulty

but first you must use the FSM to test the OMP feedback senders and the motor windings

( and also that end of the ECU mother board ) before blindly replacing parts



the ( no revs beyond 3500 ) fault on a s5 will almost certainly be in there on that lot

( a similar symptom issue on s4 cars is poor sender earth and shield grounds )

,, the stalling will likely be a unmetered air leak



find the FSM and do the OMP checks with multimeter

if you are a little bit cluey you may wish to do a code check also

( but am expecting codes 20, 26, 27 and or 37 to be present--telling exactly what i have posting since post 1 )

if i do not have a tps tester how can i tell if it needs to be adjusted?

volt check it people will tell you one way is better but do both if you can to make sure its all good

wow that was quite a task getting to the omp and eomp. removing the fan shroud is a damn headache without removing the clutch fan. anyways so ive removed airbox intake pipe top coolant hose and fan shroud the as far as testing the OMP feedback senders and the motor windings, idk where the feedback senders are and what is "motor windings"?

yea umm mine was missing half the bolts for fan shroud so i had like 2 or 3 lol

it wasnt even the bolts that was the issue it was jimmying it around the top of the radiator and the fan https://www.nopistons.com/forums/pub...1047683358.gif

Mine wasnt even that bad

picked up a multimeter today but i dont have a clue as to what i am checking for or what the number should be reading,

Look in the fsm