Rx7oneluv

I'll start this off with I LOVE MY CAR.....BUT IT HATES ME.

I finished doing a rebuild on my car, one of the housings had a ring seal that overheated and let coolant in.

The car has 73k and its a 93 touring Automatic. The car drove perfectly for the first 300miles. Then the hold light started blinking when I would slow down (no performance changes). I did a self diag check and the error that came up was speed sensor 1 error. I took the speed sensor out, checked it with an ohm-meter, it pulsed fine and put it back in. Presto no blinking hold light.

In the last few days the car hit the 500mile mark since rebuild. I've been having problems where my car doesn't want to shift. It will go to about 20mph/3000rpms, then just continue to rev with no change in speed or power. Some times it will adventually shift but not till after a few seconds of letting go of the accelerater and giving it some gas again.

I listened to it idle, seemed to idle fine, a little low and rough, nothing terrible. Noticed the Upper radiator hose was bulging. Replaced the thermostat thinking it wasn't cooling the engine properly even know my temp gauge looked fine. I figured that could be a reason the tranny wasn't shifting because of the car overheating a bit.

Tried driving my car today after spending 2 hours changing the thermostat. SAME dame problem, shifting.

Ok long story sorry. Current problems: shifting, a little low idle, oil pressure seems a little low but builds up, and I noticed a little oil in the tubing between the turbos and the intake.

PLEASE HELP ME.......Anyone have any solutions or guesses on what might be wrong with my beauty?

thanks for your time

xstacy7

Have you tried automatic transmission fluid, try filling the transmission up to where it supposed to be...maybe some leaked out somehow?

Jack

911GT2

A little oil on intake hoses is normal, but be worried if it spread to intercooler pipes. Other than that, I think it's just a tranny problem. Try the fluid check/change, and let us know.

Rx7oneluv

Fluids have been checked like the manual says.....drive car, check while running. ATF is perfect. The only other thing is, I think there is some oil in the intercooler piping.
Do you think there is a bad seal on the turbos?

Snook

iTrader: (12)

So there should be no oil that gets to the intercooler piping or intercooler?

Rx7oneluv: How was the transmission shifting before you did the rebuild on the motor. It sounds like that's the only problem and it's also weird that if it was fine that it would give out so soon after. Can you check the wiring on the transmission and make sure it's all hooked up correctly and maybe flush the atf out. Good luck and good job for sticking with it.

rpm_pwr

* swelling pipe - did you like the pain of rebuilding your motor? Get this sorted out now. It's obviously swelling because there's a block in the system., and it wont be your thermostat. If you dont fix this you're going to be up for more than a gearbox.

* Shifting - sounds like a classic case of low fluid/lack of pressure to me. Check the fluid level, then check it again hot.

* Fix the cooling system
* Fix the cooling system
* Fix the cooling system
* Fix the cooling system
* Fix the cooling system
etc

-pete

Rx7oneluv

Well...well.....I'm starting to break it all down. Tranny still messing up on shifting. My details on the tranny problem can be more specific. I did an ohm check on the Pulse sensor, and Speed sensor 1 (which is the error that is still coming up). I'm figuring the Hold light blinking came on because I reset the ECU again, and the error is still registering. I drove it around for awhile and noticed the light doesn't start blinking till the tranny tries to shift from 1st to 2nd. The speed sensor checked out fine when testing the ohms, same with the pulse sensor. So....I know they are functioning correctly. Its down to one of three things: AT-ECU, Selenoids in Tranny, or wiring (grounding or harness). Next plan is to drain the tranny and check the selenoids. I think it could be a sticky selenoid at this point from sitting for awhile, plus the fact that it will adventually shift.

I HOPE I CAN FIX THIS.

Snook: I bought the car with a blown engine. Did the rebuild myself, never touched the tranny, never took it out, only unpluged it. Seller never mentioned bad shifting, and he was an honest seller. 74yrs old doctor, who owns a ferrari, funny thing is he liked his rx7 better than the ferrari.

rpm_pwr

are you testing the speed sensor at the at-ecu harness connector?

-pete

Rx7oneluv

The swelling was at the top of the upper radiator hose going to the thermostat. Replaced thermostat. I tested the sensors at the plug like the shop manual says. The ohm reading came out perfect for all sensors. I'm going to check readings at the ecu after I drain the the ATF and check the selenoids. ATF fluid level is perfect. Checked it hot and cold. Cold seems a little high, and at hot its on the money (perfect).