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Discussion starter · #1 · (Edited)
The car makes an unusual skipping noise (and it is loud) when the computer is down shifting gears. I have to let go the break to stop the skipping noise from happening. At the same time a message pops-up on the dash saying "Gear unavailable" thou on the screen it shows gear going from 4 to 3 or 3 to 2. It only happen when shifting down to 3 or 2. Sometimes the downshift is fine. When shifting up I DONT get "Gear unavailable" or the skipping noise. It is only during down-shifting and happens may be 50% of times.

Has anyone experienced this during downshifts alone?
 
I'd suggest towing it to the dealer. Not worth putting another mile on it as you may endanger your tranny.
 
I'd suggest towing it to the dealer. Not worth putting another mile on it as you may endanger your tranny.
+1.

At this point it could be as simple as a position sensor or could be your F1 pump.....best to have a proper diagnosis first.
 
Discussion starter · #4 ·
I only get the "gear unavailable" warning when the car heats up after driving for 15-20 mins. Initially, when I take out the car and is cold, I can shift down without any issues.

I took the car to a indy shop yesterday. He topped up the fluid (F1 fluid?) and I guess did some adjustments. I picked up the car and drove home on the highway. No issues. I took the car out in the evening again, drove it for 20 or so minutes in city and no issues. Then suddenly, got the "transmission failure" warning. It happened when I was approaching a stop sign and was trying to manually shifting down from 3. The gear got stuck, got the "gear unavailable" warning, couldn't shift down or put in neutral, then 2-3 seconds later got he "transmission failure" warning. I turned the car off immediately, waited 10 seconds and fired it up. From there on I drove in auto mode.

This never happened before. I only use to get "gear unavailable" when shifting down. After the "transmission failure", was getting the same warning when shifting up too. At this point I had been driving the car for 30 or so minutes.

So, this morning I took the car for a drive in the city again. Drive around for 15 mins in a stop and go traffic. Didn't get the "transmission failure" this time or anything. Shifting down was okay too. No issues.

I'm guessing the new error I got yesterday was probably because of the adjustments they might have done at the shop? What could have done to cause this? Point of Initial Slip (PIS) setting? I don't think he adjusted the PSI because doesn't that reset the clutch readings?

Unfortunately, I couldn't pick up what the tech was saying when I asked what was done. He spoke very quickly and it just went over my head :ashamed:
 
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