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Changing Coolant Sensor & Air Sensors


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#1 electricfurnace

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Posted 02 August 2014 - 05:44 PM

Figured due to the low cost I'd change these to new to get my mpi running tip top.

Where are they located and any guides for changing?

#2 dbcool20

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Posted 02 August 2014 - 08:19 PM

The coolant temp sensor on the MPI is the brown color plug sensor which is mounted by the thermostat housing.

The inlet air temp sensor is mounted on the right side of the inlet manifold (when looking at the engine) and is green.

 

As for removal/installation nothing too crazy. pretty straight forward job no magic tricks to share on that one.



#3 electricfurnace

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Posted 02 August 2014 - 09:55 PM

Cool, are they all easily accessible then - no taking off manifolds etc?

 

Any other sensors I should replace while I'm at it?



#4 dbcool20

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Posted 02 August 2014 - 10:47 PM

Nope no need to remove manifold. both are easily accessible.

well to be honest if none of the sensors are found to be faulty i wouldn't bother changing them in the first place. I would rather spend my money on a set of new plugs or filters, parts which are more prone to get bad over time. 



#5 Fast Ivan

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Posted 02 August 2014 - 10:54 PM

sound advice there about the changing of sensors; you could actually be introducing a faulty sensor and end up going round in circles, better to prove its faulty



#6 minisilverbullet

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Posted 02 August 2014 - 11:06 PM

If it aint broke don't fix it

#7 firstforward

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Posted 03 August 2014 - 09:53 AM

I disagree, they are supposed to be changed every few years/miles. It is very unusual to get a faulty new sensor if it is a brand name. I replace mine every 60K including all vacuum hoses and elbow joints.



#8 electricfurnace

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Posted 03 August 2014 - 07:34 PM

Don't see the harm in changing them, if they are brand new they'll no doubt help with the running surely!



#9 Fast Ivan

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Posted 03 August 2014 - 08:03 PM

hope it sorts your issues


Edited by Rob Mac, 03 August 2014 - 08:09 PM.


#10 FlyingScot

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Posted 04 August 2014 - 03:15 AM

Lamba sensors get "slow" after service use, but the other sensors? Given their construction I am not convinced that they are a service item. Dealers used the Testbook to determine faulty sensors and replace as and when.
I agree with vacuum pipes and if more people spend a few quid every few years they would probably have less problems.

FS




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