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316
New to Toyota - 2005 Corolla Sportivo!
Got a good chance a month a go to give the beast a good wash. Sydney weather and the usual weekend jobs have stopped me from cleaning since but I also got a good chance to top up the HydrO2 coating. Decided to go for some quick shots not to far away from home. For a few months now, the car has been running a bit rough in terms of the tune. I had noticed for some time it seemed to be running quite rich, especially on cold starts where it would run as rich as 10.7:1 where as it would normally start in the mid 12:1s before. It was also showing random signs of hesitation on partial throttle in particular and occasionally moments of full throttle from a stop. All of this resulted in some pretty poor fuel consumption amongst other things but I caught up with Adam and did some logging and tuning last week to sort out the issues. After doing some driving and logging, Adam could definitely see the car was running way too rich. When checking through the tune, he also adjusted the temperature settings which now read correctly to not stop me from revving out all the way, especially when in stop start traffic or letting the car sit for some time with the engine bay heat. The main cause of the issues I was having was that the open loop tune was tuned to run too rich and the closed loop tune was over correcting too much which caused the sudden hesitation and throttle input delays. Once the open loop was corrected, the closed loop was re-enabled and the manifold pressure settings changed for when closed loop would take over as this reading was set too low. After addressing the concerns, the VVT and Lift tune was adjusted accordingly. Lift was set at 5500 RPM and has been raised to 5700 RPM and it honestly feels much better. Since the exhaust uses a 4-1 header/extractor, it really gets going in the higher parts of the rev range. Raising lift 200 RPM to 5700 RPM actually reduced the dip from small to large cam and the car feels much more linear now. After the hours of logging and tuning, it was a great result to have the car much more driveable at lower revs and singing all the way to redline when giving it a boot full. -
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Classic Toyota
Hi Lou, I have a 1995 one, and it is registered as a classic. Any vehicle older than 25 years is considered a classic, so , since yours is about 26 years old it is a classic. That info is for Victoria, but I would assume the same in Qld. Herb -
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New Rav4 GX Hybrid 2024 for sale
Hi All, A new "Rav4, GX, Hybrid, FWD, Saturn Blue, full-sized spare wheel" is arriving within 2 weeks. I ordered nearly 2years ago. Could not wait. Bought another car late last year. So, this new one will be for sale. Any one insterested, pm me. Location, South East metropolitant Melbourne. Cheers. -
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Listen and Learn from a Professional Mechanic
Thanks Ash for the post mate, I watched this last night and he really explained it well how a simple thing can be so very very expensive when it is designed for use and not for servicing. I recommend watching this as well for all who have a HVAC issue in their Toyota's or Lexus and as always he is the GURU for both KAA -
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FUEL WARNING MESSAGE
After the event, you realise that it is a real labour of love. Past pleasure and lots more pleasure to keep on coming in the future. -
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Classic Toyota
I just bought a 1998 Toyota Hiace Poptop Campervan. Can anyone confirm if it is a Toyota Classic? Any information would be appreciated. Thankyou Lou -
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2015 RAV4 Rear Bumper Cover Removal & Installation
Hi all. I am hoping someone can advise where I can find the instructions to remove the rear bumper cover on a 2015 Rav4 GX model and to install a new one. I am aware I will need to unclip the harness for the sensors. I assume I will need to remove the sensors from the old cover to the new one. How are the sensors secured and how do I remove them? Any advice and tips would be most appreciated. Thank you -
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FUEL WARNING MESSAGE
Glad you got it sorted Geoff. I think I got a win on mine too. I ended up replacing the entire unit inside the fuel tank. The pump was working but was very sick sounding. Also, the filter was very dirty too. I supposed it's to be expected after 14 years. What I can say is that I think some fuel was being pumped from the rear tank, but I think between the filter and the sick pump, it was not enough to empty the rear tank could empty quick enough. Maybe replacing the filter could have gotten me over the line, but I didn't want to have to do the job again. Perhaps if I was selling the car, I might have a different opinion. Its half a day that I won't forget anytime soon. I think I ended up with more diesel on me than on the ground....
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