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1.8 Tdci Temperature Gauge Problem


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#1 sky

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Posted 30 October 2011 - 04:36 PM

Hello guys,

I have ford focus mk2 1.8 tdci and noticed strange issue with temp gauge. Got the car only for a month and whenever i accelerate the temp goes down. At least this is what i see on the instrument cluster. It does not matter if the engine is hot or cold.

What i were able to find is that this is soft issue between temp sensor and the cluster. However does anyone know if there is fix released for that? Do i need to replace instrument cluster?

By the way, thermostat was replaced with new one, no change after that. Can i do some kind of calibration?

I noticed that this is issue only with that engine - 1.8 TDCi.

Here is a video of what i am talking about. Please watch the temp gauge on the dash.



Can i do some kind of calibration of that temp sensor??

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#2 Barry_

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Posted 31 October 2011 - 01:22 PM

maybe a software update by a ford garage??

#3 sky

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Posted 31 October 2011 - 04:22 PM

Hi,

Just came back from Ford service. I told them about to check for update, but they could not find anything related under symptoms menu. However i found this thread which is exactly my problem.

http://www.honestjoh...dex.htm?t=59922

The problem appear only on 1.8 TDCi engine.

Could someone point me what update/buletin is, so i can tell my dealer what to search for? I've been told that they will make a request to Ford and will call me back. However i do not know when this will happen. The temp sensor and thermostat are working fine.

My ECU/PCM version is this - 4M51-12A650-JN. It is latest version. According to above thread the issue is with overtemping calibration.

Anyone that can help me with info? Thanks a lot

This is another video with the issue



#4 sky

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Posted 03 November 2011 - 04:06 PM

Guys,

Where can i get new ECU/PCM from? I would like to try with different ECU.

Thanks

#5 sky

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Posted 17 November 2011 - 10:31 AM

Hi guys,

Picked up my car from Ford service yesterday after been there for 2 days. Their conclusion was deffective instrument cluster. I can't belive it yet and more over what new instrument cluster will fix as it comes to be a software issue. I do not know what to do now. Temperature sensor is working fine from what they've checked. Got an offer for new instrument for 650 euro which is a lot. Is there a way to test with second hand cluster? Do i need to adjust the immobiliser only?

Here is the part number i got - 4U7T - 10846 - GS or 4M5T - 10849 - GS

I have to add one more thing to the problem. The issue can be noticed when the car is static and you just keep the rpm between 2500-3000 rpm. I see the temp gauge is going down and when you release the pedal it is coming back. Could it be something related to the voltage?

Any ideas are welcome.

Thanks

#6 jeebowhite

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Posted 17 November 2011 - 03:22 PM

lol, are you sure you dont have @Kingfisher's old car... seems so very similar...

#7 sky

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Posted 17 November 2011 - 04:05 PM

No, it is not his old car. For now i am gonna monitor it for a while and will see what to do after that.

#8 jeebowhite

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Posted 18 November 2011 - 01:16 PM

Good Job, I was going to say it was very coincidental! can you not rip out a cluster from an old wreck? just save yourself a lot of money?

#9 sky

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Posted 18 November 2011 - 02:08 PM

In process to get another second hand cluster. The problem is that i am not sure the new (second hand) won't have the same issue. What do you think?

Could someone help me with the letter of the cluster. I found so far ending on GM or GR, but not GS. What is the difference? Can i go with GM or GR or GP versions of the cluster?

Thanks


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