Home > Td5 > Defender TD5 cruise control.....confused! |
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Bim Member Since: 09 Jun 2018 Location: Cambs Posts: 28 |
Thanks Mike would you have the speed healer switched with the cc so only on when selected
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29th Jan 2021 9:18am |
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achuakh Member Since: 12 Apr 2012 Location: Singapore Posts: 157 |
you can do it two way and I've done both.
1. speedo healer - great you can program a A and B setting, so if you switch into your overdrive, if will use one setting while if you do not have the overdrive engaged, you can use the other setting. Technically, what you are doing with this is to reduce the pulses to fool the ecu to thinking the gear ratio is valid, ie the road spead vs the engine rpm. the moment you engage the overdrive, the rpm will drop, but the road speed is higher than what the ecu think its should be. so it doesn't not allow the cruise control to engage. Doing it this way, might be the preferred way for you as you can switch when you want the pulse reduction to kick in via the speedo healer. you might need the extra plug in switch for the speedo healer to work for the switching. 2. modify the valid gear ratio in the ECU map - this is more for those who have change the T-box ratio and cannot get the cruise control to engage in gear 5 due to the same thing that's happening above. If you know your way around how to remap the ECU, then this is definitely the easier way as you just need to use your calculator and not have to mess around with wires. Going this route also allows you to adjust the cruise control PID, or how hard it will accelerate when the speed falls below a certain value. From the land of the most expensive land rover defenders on planet earth. At �125k for a XS 110 csw and you get to own it only for 10yrs! Please find me a good reason to stay on this island. |
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29th Jan 2021 2:19pm |
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Bim Member Since: 09 Jun 2018 Location: Cambs Posts: 28 |
Thanks Mike would you have the speed healer switched with the cc so only on when selected
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29th Jan 2021 4:21pm |
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Wallywulpimuir Member Since: 28 Jan 2022 Location: Murphy Town Posts: 1 |
achuakh I am in Australia and have done similar to you with option 2 this resolves the issues very easily even with a Roamerdrive on a Defender What I cant find in the ECU is the Cruise control PID so I can change the harshness with which the vehicle accelerates when the cruise control is on can you give me any advice Wally |
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28th Jan 2022 9:27pm |
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djam1 Member Since: 30 Apr 2012 Location: Northwest Western Australia Posts: 3 |
I am interested in this subject as well
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29th Jan 2022 10:04pm |
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BP Member Since: 11 May 2022 Location: Brackley Posts: 6 |
I went with the speedhealer option as well for my cruise/overdrive setup. Works really well.
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12th May 2022 7:57am |
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Linds Hanson Member Since: 16 Jan 2021 Location: Cornwall Posts: 430 |
You may find driving along bumpy tracks will induce kangarooing with a light throttle spring TD5's were prone to this at the best of times |
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12th May 2022 5:14pm |
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lightning Member Since: 23 Apr 2009 Location: High Peak, Derbyshire Posts: 2158 |
l wouldn't remove one spring completely, because if the other one ever fails you'll be stuck on full throttle.
You can make the pedal lighter by re drilling one of the spring locating holes so the spring still works but less strong. |
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12th May 2022 5:34pm |
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