Who has 120 psi of oil?? I DO!!!

[airhead04]

I have a 1991 supra 7mgte and put my new prosport gauges in today. A/F, OIL PSI, and BOOST. Well I have the A/F and the Boost working great. The oil psi on the other hand went crazy.

I turned on the car and the oil read 50psi.....I thought holy shit.
Any ways I took it for a spin aroung the block and what would you have it, I stopped in front of my house and the thing went to 120psi. I cant figure out what is wrong. I triple checked all my connections and made sure everything was how it needs to be.

So my question is how can I fix my problem? lol

I have a new pressure sending unit from DM installed to, its oem. Maybe thats the problem? Or do I have to use the pressure sending unit that came with the oil psi gauge?

 

[nick88]

I have a 1991 supra 7mgte and put my new prosport gauges in today. A/F, OIL PSI, and BOOST. Well I have the A/F and the Boost working great. The oil psi on the other hand went crazy.

I turned on the car and the oil read 50psi.....I thought holy shit.
Any ways I took it for a spin aroung the block and what would you have it, I stopped in front of my house and the thing went to 120psi. I cant figure out what is wrong. I triple checked all my connections and made sure everything was how it needs to be.

So my question is how can I fix my problem? lol

I have a new pressure sending unit from DM installed to, its oem. Maybe thats the problem? Or do I have to use the pressure sending unit that came with the oil psi gauge?

I would use the one that came with the gauge because different gauges take different readings of the same signal and the one that came with it is the signal that the gauge reads.

 

[Zumtizzle]

I have a new pressure sending unit from DM installed to, its oem. Maybe thats the problem? Or do I have to use the pressure sending unit that came with the oil psi gauge?

Theres the problem bud!

 

[Poodles]

Yeah, definately the problem, and the ECU uses the stock sender for some trimming, so hook it back up.

 

[92nsx]

You have to use the pressure sensor that came with your prosport gauge.

 

[airhead04]

Yeah, definately the problem, and the ECU uses the stock sender for some trimming, so hook it back up.

My oil pressure gauge (stock) is bad. It doesnt read.

so i need to put the oil pressure sender that came with it on?

 

[airhead04]

You have to use the pressure sensor that came with your prosport gauge.

sweet, okey dokey. thanks guys.

Go ahead and make fun of me now. lol

 

[Poodles]

Stock gauge or sender is bad? Like I said, it's used by the ECU...

 

[airhead04]

Stock gauge or sender is bad? Like I said, it's used by the ECU...

My stock gauge is bad. I thought it was the sender, I put a new one on and th gauge didnt read still. So its the gauge. Thats why I have the prosprt one now. Ill put the sender that came with the gauge on tomorrow and let yall know what happens. Its getting to dark to work on the car.


Thanks for the help again.

 

[TurboStreetCar]

Stock gauge or sender is bad? Like I said, it's used by the ECU...

Off topic slightly, What exactly does the TCCS determine with oil pressure, I know it gets the signal, and the EWD shows that and says it uses the reading (http://www.cygnusx1.net/Supra/Library/TEWD/MK3/manual.aspx?S=Main&P=044) but i cant figure out what it would do with it.

 

[airhead04]

Off topic slightly, What exactly does the TCCS determine with oil pressure, I know it gets the signal, and the EWD shows that and says it uses the reading (http://www.cygnusx1.net/Supra/Library/TEWD/MK3/manual.aspx?S=Main&P=044) but i cant figure out what it would do with it.

I believe its for the CEL to come on if there isnt sufficent pressure to the system.

 

[jetjock]

Read the next page.

OP: The MKIII's oil sending unit is very unique. Not that connecting an aftermarket gage to a stock sending unit is a bright idea to begin with..

 

[airhead04]

It worked fine on my acura. So it didnt really click in when I did it on the car today. lol

 

[TurboStreetCar]

Read the next page.

OP: The MKIII's oil sending unit is very unique. Not that connecting an aftermarket gage to a stock sending unit is a bright idea to begin with..

Ahhh, i missed the 13 in the ISC system. Interesting it looks at oil pressure for ISC. Wouldn't have thought of that, Though a good idea.

 

[airhead04]

Wow what a PITA that new sender is from prosport. It is the same thread size just it is to fat. Well I used a tap and die kit and made it smaller. Fits like a charm now.

Thanks for the help guys.

 

[lewis15498]

Wow what a PITA that new sender is from prosport. It is the same thread size just it is to fat. Well I used a tap and die kit and made it smaller. Fits like a charm now.

Thanks for the help guys.

Are you saying you put the prosport sender in place of the factory unit?

 

[airhead04]

no. The little adapter for the oil filter. it didnt want to go in. I bought the adapters and they didnt work. But I could get the stock sender in fine. Idk what was wrong with it. It just didnt want to fit.

 

[SURUKO]

did the gauge ever work right ??

 

[airhead04]

yep, its reading perfect now. =]