Location of the MAP sensor - Alfa Romeo Forum
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(Post Link) post #1 of 13 Old 01-02-11 Thread Starter
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Location of the MAP sensor

I haev been advised by my local tuner to check my map sensor before going down the expensive route of remapping again and possible turbo replacement. Although I've found mentions of it no one supsects it as a problem causing sensor or mentions where it is. Can someone enlighten me please
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do you mean the maf sensor
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(Post Link) post #3 of 13 Old 01-02-11 Thread Starter
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No I mean the map sensor. Now I didn't think the jtd had a map sensor as it already has a maf. So my theory is that why would you need two sensors that essential perform the same function???? And yes I know that each of them measure different perameters. One air flow and the other presure in the manafold but this is used for the same process in the engine so it can work out the right fuel mix. See this is the problem I have whenever I talk to tuners on the phone they say things that I'm not sure about and then everyone asks why I ask such a silly question???. so really my first question should be does the jtd have a map sensor as well as a maf???? And where is the map sensor?

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MAF monitors air volume (air flow)
MAP monitors air pressure (vacuum and boost, although vacuum not applicable to diesels)
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But where is it?
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back of your cylinder head on a 1.9 I think? Take the plastic engine cover off and it's kind of behind the cam cover and mounted vertically? - black unit with I think one torx screw holding it on and a wiring plug (Sorry, it's hard to describe!!). Over towards the left as you look at it (I'm going off my 20v). I also believe it's not quite in the same place on my 20v but I remember seeing a pic of the 1.9 one on here a few days back....

edit: http://www.worldcarparts.co.uk/Deskt...SCH.jpg&IW=300

bit like that one I think!
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d'yknow what, if my memory worked properly I could be quite useful! Being the MAP sensor it's on the INLET MANIFOLD innit

I think this pic might help?

http://i41.tinypic.com/11vl6gz.jpg

the thing at the top of the pic to the right, with the wiring connector on it I think....
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(Post Link) post #8 of 13 Old 02-02-11 Thread Starter
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Bingo!. Cheers photodave.
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Wahey! No worries - i'll try and do it in less than two posts and four edits next time!
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Looks about right I'm gonna take a look at this as well.
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(Post Link) post #11 of 13 Old 21-02-11 Thread Starter
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A quick update. Cleaned the MAP sensor. WOW was it cacky. Hopefully this may help towards the boost spike errors.
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File Type: jpg 9c089915.jpg (56.2 KB, 85 views)
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Any better?
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(Post Link) post #13 of 13 Old 28-02-11 Thread Starter
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Seems ok. Not been on track so can't replicate the fault
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