Hi all,

 

I'm trying to sort several issues on my car at once and the gearbox is still holding onto the gears for too long.

 

Here's where I'm at at the minute.

 

I've now sorted the idle out so it's idling at the correct rpm. I've again reset the TPS with the help of JeffTT's guide so that is now set at 0.46.

 

The car is still holding into every gear until 3500 rpm when under acceleration regardless of speed or amount of acceleration.

 

If I take my foot off the accelerator for a few seconds then the car will change up to the appropriate gear.

 

When I first set the TPS it was originally sitting at 1. I set it to 0.46. I then had the idle sorted (the cable was slightly tight and holding the throttle just off the rest peg and I was missing a nut from the throttle on passenger bank meaning the drivers side was opening up at a different level to the other bank) I then drive it for the weekend and the TPS was at 0.34 yesterday after the alteration. Reset it again to the correct 0.46.

 

Weird thing is that no matter where the TPS was set (0.34, 0.46 or 1) the car was always changing up at 3500rpm under acceleration.

 

Any ideas on what could be causing this?

Is the selector switch by the Auto change leaver marked A/T set to Power, Hold or in the middle ?

Faulty power/hold switch? Mind you that would mean the lights would be on on the dash.

 

First thoughts would be on the TPS being faulty. Maybe worth swapping it for a known good one first and see if that solves it

Yeah, I've tried the switch. It's set in the middle. Push it to power and it holds for even longer.

 

I'd thought that about the TPS being faulty but the voltage changes when the throttle is opened. Could it still be faulty?

 

Peter

Yeah, I've tried the switch. It's set in the middle. Push it to power and it holds for even longer.

 

I'd thought that about the TPS being faulty but the voltage changes when the throttle is opened. Could it still be faulty?

 

Peter

What is the voltage range on your tps, from fully closed to fully open. iirc it should go from 0.44 upto 4.06v (not sure if this is correct, so feel free to correct me)

Yeah, I've tried the switch. It's set in the middle. Push it to power and it holds for even longer.

 

I'd thought that about the TPS being faulty but the voltage changes when the throttle is opened. Could it still be faulty?

 

Peter

What is the voltage range on your tps, from fully closed to fully open. iirc it should go from 0.44 upto 4.06v (not sure if this is correct, so feel free to correct me)

I'm not sure what the full range is but I know it does move. I'll check again on Wednesday just to be sure. Seems strange though that it always chooses 3500rpm for each gear.

I'm not sure what the full range is but I know it does move. I'll check again on Wednesday just to be sure. Seems strange though that it always chooses 3500rpm for each gear.

Right, checked the TPS voltage and all seems well. Goes from the 0.45 up to 3.83 at the fully open position.

 

Any ideas?

Could the auto box filter need a clean out?

 

Sent from my SM-G900F using Tapatalk

That was my next idea. Just wondered though as it changes up without the accelerator pressed using engine speed? Would it still do this if it was the filter?

That was my next idea. Just wondered though as it changes up without the accelerator pressed using engine speed? Would it still do this if it was the filter?

 

No idea to be honest. Hopefully someone will be along to answer it.