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Old 3rd April 2022, 17:20   #1
Alleytee
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Default Help please. Flooded plenum

Have owned the the MGZT CDTi for 12 years and cleaned out the plenum drains many times but missed it at last service and then foolishly ignored the warning sign of the windscreen misting from the vents. Heavy downpour, ECU wet and the in tank fuel pump stopped. Sent ECU off for rebuild which sorted the fuel pump circuit but now the check engine light illuminates and the cooling fan runs on fast as soon as ignition is turned on.
Have tried a new temperature sender, tried changing the engine fuse box relay. No bent pins on ECU. The wires from ECU plug to sender and to relay show low resistance ( 0.2 ohm )
I have the following message on OBD2
“ Can Link ECM ABSCM Circuit Network Malfunction” and “ Engine coolant temp sensor 1 Circuit Low”
The ECU has been rebuilt again and I have tried a Freelander ECU. Fault still present.
Any advice please?
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Old 3rd April 2022, 18:10   #2
Mike Noc
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Who did you send the ECM to for the repair?
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Old 3rd April 2022, 18:10   #3
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Where in the Highlands are you? Lovel (Gary) in Aberdeenshire might be able to help. Failing that speak to BigRuss.
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Old 3rd April 2022, 18:31   #4
Alleytee
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Autotronics in Leicester £300
Very quick service and accepted it back without quibble for another try.
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Old 3rd April 2022, 18:32   #5
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Inverness so still 100 miles from Aberdeen. Thanks I’ll try BigRuss
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Old 3rd April 2022, 19:53   #6
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Quote:
Originally Posted by Alleytee View Post
Inverness so still 100 miles from Aberdeen. Thanks I’ll try BigRuss
Absolutely -Big Russ is the man you need to speak to - he will sort you out.
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Old 9th April 2022, 19:23   #7
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Many thanks for the advice. Sent ECU to BigRuss for programming and had it back within a day. Engine runs beautifully, no warning light and fans function correctly. Very helpful and great service. Delighted to have car back working - I thought it might to go for breaking
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Old 9th April 2022, 23:14   #8
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Originally Posted by Alleytee View Post
Many thanks for the advice. Sent ECU to BigRuss for programming and had it back within a day. Engine runs beautifully, no warning light and fans function correctly. Very helpful and great service. Delighted to have car back working - I thought it might to go for breaking
HI Alistair.
I hope you have or are going to contact ( Autotronics in Leicester )for your £300 back, as they clearly did not do the job properly, in fact most likley made the matter worse, Russ is a Wizard with these cars so glad to here you are now sorted
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