Reply With QuoteI wish i could do this to my sons commodore.....it might slow him down
Swaggie
Had an interesting one this week.
Td5 D2, had a turbo failure (Big time, engine runaway the whole deal, was able to stall it out though luckily. Would've been a total loss if it was auto)and was towed in.
After turbo was replaced, and a chipped ECU was fitted, (NOT a Tombie one unfortunately, it was an early non flash model) it still had average performance. I checked ECU, AFM, replaced fuel pump as it was 200+k old, checked and adjusted valve timing and injector bump clearances and ran diagnostics in realtime while driving. Still no clues.
It was then I noticed the ECU was being told the vehicle was in Low range. When I selected High, the ECU was told Low, and vice a versa.
After unplugging and bridging the connector on the TF case, it was a goer. A real goer.
I am ata loss to explain why this happened. Apparently the vehicle has never had good performance, even when new. The upgraded ECU made it worse as the mapping for low range is really 'flat' to make good off road driveability.
Anyone have any ideas as to why it happened?
And Tombie, WHEN ARE YOU GOING TO MAKE NON FLASH ECU'S AVAILABLE????
JC
The Isuzu 110. Solid and as dependable as a rock, coming soon with auto box😊
The Range Rover L322 4.4.TTDV8 ....probably won't bother with the remap..😈
Swaggie
I wish i could do this to my sons commodore.....it might slow him down
RoverLord
Thanks JC
Something else to look into with mine.
Sometimes its a flyer other times a gutless slug.
Need to do more work with the Nanocom and Laptop.
Andrew
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TopicToaster
Wiring fault from new maybe?
dodgy repair early in its life?
Nope!
Factory fix for surging issues in some vehicles....
They inverted the mapping in the ECUs to remove throttle sensitivity in High by flipping the internal settings....
Mines like that.... (Hard chipped ECUs only)
How do you find out if it has been "flipped'?Originally Posted by Tombie2
Also is it hard to reverse?
Mine is like LandyAndy's .... a gutless slug.
Impossible to "flip" without fitting a different chip.
Gutless isnt that issue commonly, mine was going hard as is.
I have a fuel pressure issue killing my power at the moment.
Master
Andrew, interesting!
Mine performs well normally, however after towing the caravan 500+ km, it drives like a bloody rocket when the caravan is removed (no not imagining it). It's almost like the ECM has configured itself to be more responsive or something? After driving for a while it reverts back to "normal" performance again.
Has anyone else found this?
Swaggie
Had an auto one today (2000MY) and it is also configured that way. Apparently the standard mapping isn't as critical with auto ones as they arent effected much in low range IE no clutch/surging issues etc.
JC
The Isuzu 110. Solid and as dependable as a rock, coming soon with auto box😊
The Range Rover L322 4.4.TTDV8 ....probably won't bother with the remap..😈
RoverLord
FWIW from memory the switch is open in one position and closed in another... I think that there is a couple of aftermarket switches that will fit in the switches position but the NO/NC of the switch is reversed... might be worth mulitmetering the switch....
Dave
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