Collman · Mar 14, 2023

lightning said:
Have you tried disconnecting the MAF unit yet

Takes ten seconds (once the bonnet is open!)
Costs nothing

Disconnect it, go for a drive and see what happens

lt's also a very easy part to change if it does turn out to be defective, takes about five minutes

I will try it but the last time I started the engine there was no delay.

Stanleysteamer · Mar 14, 2023

dag019 said:
I did and it didn't make a difference to the delay I am experiencing on start up. It doesn't cause me any issues and has happily been like it for the last 18months so I plan on ignoring it and continuing as I have been.

I did this until it got so bad it was more or less dangerous.
On advice from on here I checked live data, and it turned out to be the IAT sensor.
Relaced with a new Bosch one.
Problem solved.

And cleaning it did no good at all!

lightning · Mar 23, 2023

Well that's something else to try.

Hope you get it sorted.

Scooby22 · Mar 24, 2023

Engine stalling, rough idling, engine stumbling, and random surges of power are commonly associated with IAT sensor failure. (Air intake sensor)

Caval · Jan 6, 2024

i have a 2003 disco 2 td5 with the same symptoms Filters all changed still a problem until i disconnected the sensors Can this do damage or is there something i am missing i have cleaned the sensors with a compressor and no change. The car just stops with the engine still running and after I switch off and on again it works HELP

Stanleysteamer · Jan 6, 2024

Caval said:
i have a 2003 disco 2 td5 with the same symptoms Filters all changed still a problem until i disconnected the sensors Can this do damage or is there something i am missing i have cleaned the sensors with a compressor and no change. The car just stops with the engine still running and after I switch off and on again it works HELP

Cleaning a sensor that is not working properly may well not fix it.
Live data should show which ones are not working properly and allow you to replace them.

Collman

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Stanleysteamer

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lightning

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Scooby22

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Caval

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Stanleysteamer

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