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Topic: Oil Pressure sending unit (Read 1588 times) previous topic - next topic

Oil Pressure sending unit

Is there a difference in the sending units from a thunderbird to a mustang. My oil pressure gauge reads high almost all the time and it just doesnt seem like it is working properly.

Oil Pressure sending unit

Reply #1 –
Ford used a fake oil pressure sender back in the day (and still does). It is not really a sensor, it's a switch with a resistor. Under, say, 15PSI, the gauge will show low. Over 15PSI it will show midwaybin the gauge. This was an (extrememely dishonest) way of reducing uneccesary trips to the dealership (and warranty costs). Mustangs use the same gauge.

What I did to get around it is to use an aftermarket sender - AC Delco, P/N 01972321. It fluctuates with temp and RPM, so it seems to be working
2015 Mustang GT Premium - 5.0, 6-speed, Guard Green - too much awesome for one car

1988 5.0 Thunderbird :birdsmily: SOLD SEPT 11 2010: TC front clip/hood ♣ Body & paint completed Oct 2007 ♣ 3.55 TC rear end and front brakes ♣ TC interior ♣ CHE rear control arms (adjustable lowers) ♣ 2001 Bullitt springs ♣ Energy suspension poly busings ♣ Kenne Brown subframe connectors ♣ CWE engine mounts ♣ Thundercat sequential turn signals ♣ Explorer overhead console (temp/compass display) ♣ 2.25" off-road dual exhaust ♣ T-5 transmission swap completed Jan 2009 ♣

Oil Pressure sending unit

Reply #2 –
Quote from: Thunder Chicken
Ford used a fake oil pressure sender back in the day (and still does). It is not really a sensor, it's a switch with a resistor. Under, say, 15PSI, the gauge will show low. Over 15PSI it will show midwaybin the gauge. This was an (extrememely dishonest) way of reducing uneccesary trips to the dealership (and warranty costs). Mustangs use the same gauge.

What I did to get around it is to use an aftermarket sender - AC Delco, P/N 01972321. It fluctuates with temp and RPM, so it seems to be working


was that swap fairly straite forward? i noticed a few gauges in all the 88s and 87s i drive being off and was wondering about how to fix it. expecialy on the turbo coupe with its insaine oil pressure. i still need to get a real gauge to check it before i "fix" it tho.