2000 RPM max

roger01 · Nov 25, 2024

Hi I've had a 2001 2.5 HDSE auto for many years, been laid up maybe 4 years or so (leaky airsprings and fuel pump playing up) although not on the road always fired up and shunted up and down the drive every few months. Finally got around to replacing the air springs, OH the brakes, new pump in the tank fuel flter etc, probably with being sat lopsided for a while the EAS was locked out so no go from the ride hight button/switch and the max speed message on the dash, reset with RSW and fine, message gone, EAS up and down at the push of a button and stays up for weeks, still fires up at the first touch but doesn't want to rev above 2000 rpm, cleaned the MAF and the EGR to make sure nothing was sticking/clogged but still flattens out at 2k, she's no longer a daily driver (got a 322 for that) just like to get the old girl back on the road, she's family, any suggestions/help would be greatly appreciated.

Rubberknees · Nov 25, 2024

roger01 said:
Hi I've had a 2001 2.5 HDSE auto for many years, been laid up maybe 4 years or so (leaky airsprings and fuel pump playing up) although not on the road always fired up and shunted up and down the drive every few months. Finally got around to replacing the air springs, OH the brakes, new pump in the tank fuel flter etc, probably with being sat lopsided for a while the EAS was locked out so no go from the ride hight button/switch and the max speed message on the dash, reset with RSW and fine, message gone, EAS up and down at the push of a button and stays up for weeks, still fires up at the first touch but doesn't want to rev above 2000 rpm, cleaned the MAF and the EGR to make sure nothing was sticking/clogged but still flattens out at 2k, she's no longer a daily driver (got a 322 for that) just like to get the old girl back on the road, she's family, any suggestions/help would be greatly appreciated.

Disconnect the MAF and try it. The MAF will run on default settings. Don't try using one of the cheap import replacements as not very good and don't last long. In my experience cleaning has not always worked. I've run with MAF disconnected for without mishap until a OEM has been sourced 2nd hand

Datatek · Nov 25, 2024

roger01 said:
Hi I've had a 2001 2.5 HDSE auto for many years, been laid up maybe 4 years or so (leaky airsprings and fuel pump playing up) although not on the road always fired up and shunted up and down the drive every few months. Finally got around to replacing the air springs, OH the brakes, new pump in the tank fuel flter etc, probably with being sat lopsided for a while the EAS was locked out so no go from the ride hight button/switch and the max speed message on the dash, reset with RSW and fine, message gone, EAS up and down at the push of a button and stays up for weeks, still fires up at the first touch but doesn't want to rev above 2000 rpm, cleaned the MAF and the EGR to make sure nothing was sticking/clogged but still flattens out at 2k, she's no longer a daily driver (got a 322 for that) just like to get the old girl back on the road, she's family, any suggestions/help would be greatly appreciated.

Unplug the MAF and see if it is different, also check the MAP sensor. Needs diagnostics, could be in limp mode due to a duff sensor or corroded connector.

backinblack · Nov 25, 2024

Had this on a Disco TD5 due to low battery volts to ecu.

RangeRoller dt · Nov 25, 2024

Maybe pipe has split to MAP on inlet manifold. When checking be extra careful not to snap the spigot it goes onto they can get weak.

roger01 · Nov 29, 2024

Hi Guys, thanks for the replies, sorry for the delay been out of town a couple of days, tried with the MAF unplugged and no change, the pipework to the MAP was replaced maybe 6/7 years ago at the same time I did the leak off pipes and all looks ok, is there anyone in the Wombwell - Barnsley areas with a Nanocom for the Diesel it looks like that may have to be the next step, not asking for a freeby of course.

RangeRoller dt · Nov 29, 2024

Next check would be rubber turbo hoses internally. Turbo to intercooler / cooler to inlet. They just held on with jubilee clips all you need is a screwdriver.
If you can get the intercooler out check/flush same time all the better

Datatek · Nov 29, 2024

roger01 said:
Hi Guys, thanks for the replies, sorry for the delay been out of town a couple of days, tried with the MAF unplugged and no change, the pipework to the MAP was replaced maybe 6/7 years ago at the same time I did the leak off pipes and all looks ok, is there anyone in the Wombwell - Barnsley areas with a Nanocom for the Diesel it looks like that may have to be the next step, not asking for a freeby of course.

Have you checked the spigot in the manifold that the MAP pipe goes to is clear.?

2000 RPM max

roger01

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Rubberknees

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Datatek

Well-Known Member

backinblack

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RangeRoller dt

Well-Sprung Member

roger01

Member

RangeRoller dt

Well-Sprung Member

Datatek

Well-Known Member

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