Traded my BROKEN Zero Turn Mower for a 86GT w/ 92k miles

[Fierofool]

PM sent

[Donster]

Don, the AC on the 85 isn't working?  Check on the receiver/dryer to see that the cycle switch is plugged in.  The AC always worked for me.  If you'll get the 134a, I'll recharge it for you.  I had a problem with the schrader valve leaking, so if it's leaked down, that may be the problem. 

Yep, the 85
Don't really have a clue what you are referring to  but I might grab the manual and try and figure it out. Right now she's blowing nothing but hot air.

\D

[Fierofool]

In the front compartment, look for the receiver/dryer.  Back under the cowl, at the top of the receiver/dryer toward the drivers side there should be a wiring pigtail plugged into the receiver/dryer.  If not, plug it up.  It's the cycle switch.  I often unplugged it when running in the twisties so I could energize the cooling fan without the AC compressor consuming horsepower.

[Donster]

Will test/check as soon as I get home tonight
Where's the best place to get 134a? And if I get it, does your offer stand to charge it?

\D

[Fierofool]

I've been getting it at Advance on the club account.  I heard that the price has recently gone up, wherever you get it.  Get 1 can of 134 with stop leak and 2 regular 134's.  The offer stands. 

[oldone]

aerodonamic got 134a for about 8 dollars plus a can at dollar general about aweek or two ago.

[jwrape]

aerodonamic got 134a for about 8 dollars plus a can at dollar general about aweek or two ago.

Man....you can get everything there. That's crazy that they carry that

[jwrape]

I replaced the Oil Pressure Sending Unit in the GT. It wasn't a new one but was by far in better shape and the guy swears up and down it's a good one but it is reading crazy.
One second it will be zero, the next it's 40psi, the next it's 80 psi, the next it's over 80psi and the need jumps like it's walking on the sun.

The guy seems to think I did something wrong installing it. I simply unscrewed the old and screw in the newer one with a 14mm or 15mm wrench on the fitting of the sensor. I didn't use teflon tape so that it would ground properly. It's not leaking.

I don't know why it would jump around like it is.

[jwrape]

It's probably useless. If you remove the connector and look to where it attached to the sensor you'll likely see a small hole at the bottom. GM made a mistake here and there is a plug that should go there or you can use a dab of high-temp RTV to seal it.
Water/condensation tends to get inside the sensor through that hole and damages the unit. That would cause the problem you describe. You can't fix it as far as I know.

I doubt that it had anything to do with your installation.

Sorry, I wish I had better info for you.

Ok, Thank you.

[Fierofool]

Ed Parks of The Fiero Factory put out a bulletin years ago about the oil pressure sending units for the V6.  He ordered them by the case, and just about everything he got was faulty in the sense that the indicated pressure was incorrect.  He said there was a problem in the circuitry inside. 

As I said, that was years ago, but it seems that either there's still a lot of them out there, or they're still making them with a fault.  I don't know how many BWD units I've returned to Advance and O'Reilly.  The AutoZone brand is just as bad.  Even AC/Delco has some bad ones, but that's where I got my last good one. 

The only way I've found to be reasonably sure I have one that's reading correctly is to hook up a $10 mechanical oil pressure gauge and check the pressure when the engine is up to operating temperature.  I think I bought my SunPro gauge at AutoZone.  Once I know what the hot idle oil pressure is, then I have something to compare to when installing a new electric sending unit. 

[jwrape]

I'm not overly concerned if it's exactly correct, I just want it to actually register something other than 0 or 80+ psi. Somewhere in the middle would be nice

[Fierofool]

Then I have one for you.  Free.  It registers close to 80 psi all the time.  Came off the 86GT I sold Rat Pee 86.  The mechanical gauge showed 15 psi. 

[jwrape]

Then I have one for you.  Free.  It registers close to 80 psi all the time.  Came off the 86GT I sold Rat Pee 86.  The mechanical gauge showed 15 psi. 

Wow! Maybe I overstated. LOL! Um, don't care if it's totally accurate, maybe off by a few psi. LOL!
Thank you though.
Actually, my original sensor read over 80psi all the time. Looked like the motor was gonna blow a seal.
I'll break down and get a AC Delco. I'll just wait till after the A/C is fixed. I should have known better than to buy a used sensor anyway.

[Fierofool]

First, you need to check it with a mechanical gauge.  Even without suspected problems with the sending unit, it's not a bad idea to check with a mechanical gauge, maybe once a year, especially on the higher mileage engines.  Otherwise you don't know how close your replacement unit is to being correct. 

Again, if you need to borrow a mechanical gauge, I have one. 

[jwrape]

I have one, Thank you