Its in the back of the air filter box, on the right hand side looking into the engine bay. At least it is on the Xantia.
I was going to reply to your previous post and suggest that your cutting out was a separate issue, looks like it was!
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Sorry, i edited my message. I was talking about intake manifold pressure sensor.Mandrake wrote:I'm confused - the air intake temperature sensor is on the opposite side of the engine to the timing belt, so how could they damage it while doing the timing belt ?
Its in the back of the air filter box, on the right hand side looking into the engine bay. At least it is on the Xantia.
I was going to reply to your previous post and suggest that your cutting out was a separate issue, looks like it was!
Ah, that makes much more sense.larppaxyz wrote:Sorry, i edited my message. I was talking about intake manifold pressure sensor.
But disconnecting sensor while engine is running, always makes engine cut out. I have tested this beforeMandrake wrote:When the engine is hot it will usually run without the MAP sensor, but only if the throttle butterfly is clean, and TPS and oxygen sensor are working properly, then the ECU can adapt and synthesise the lost data to allow the engine to run, but the throttle response can be jerky and there will be a tendency to stall and difficulty starting.
I'm pretty sure it's problem with wiring or connector, not with sensor. However, it's a no-name part, cost me around 30 euros few years ago. I didn't make any difference, so i kept old sensor in my glovebox knowing it's in working condition. I now swapped it back, because it was easy and i wanted to get back home.Mandrake wrote: The MAP sensor you just replaced which has failed, where did you buy it and for how much ?
It's possible, but it just would be pretty amazing that it failed just when they disconnected it from connector. Now that i think about it, it's possible it was damaged by physical force.Mandrake wrote: Could it just be that your MAP sensor has failed by itself due to being poor quality ? If your original sensor is the factory fitted Bosch one and its working fine now you've fitted it back in there was probably never anything wrong with it, just like mine...
I'm pretty sure that if it gives any values, they are fine, but when i twist it or move it, it shorts out. So could be wiring or internal damage. I will take a look at it after i'm sure there are no more problems with my car.Mandrake wrote: To test it measure the manifold pressure with the Lexia in parameters measurement - with the key turned on and engine not running it should read local ambient pressure in millibars, eg around 1000 millibars.
Idling on a hot engine it should read between 350 and 450 millibars depending on whether there is an accessory load. If it passes both of those tests its ok.
Yes, disconnecting the MAP sensor on a running engine will instantly stall it, however leave it disconnected and try to start the engine a few times and it will start on the 3rd or 4th attempt (might require a little bit of throttle too) once the ECU has set a fault code for it, (which takes a few attempts at starting) it will ignore the MAP sensor and rely entirely on the TPS sensor and engine rpm for the base injection calculation, helped by feedback from the oxygen sensor once that warms up.larppaxyz wrote: But disconnecting sensor while engine is running, always makes engine cut out. I have tested this beforeIt could be possible to start it without sensor, i haven't tested that.
I've cleaned it today (but it wasn't very dirty and already turned freely) and done some other work as well like spark plugs but the end result is disappointing - no real change, maybe even slightly worse. I'm too tired tonight to write a detailed post but I will post more details of what I did tomorrow including some pictures.So when are you going to clean your ICV?
I can't quite visualise what you're suggesting ?addo wrote:Have you dummied up the coils to test each plug and lead? You only need to make a ground tether with crimp eyes and affix it to both the coil under test and engine ground.
No, because I can't find anything suitable to replace it which won't be a backwards step from what I have now...Has the battery terminal been replaced yet?
Why don't you replace them and see? It's the cheapest, easiest thing you could do, yet you persist in avoiding doing it. I don't understand..Mandrake wrote:Right, a bit more tinkering today.
Before anyone jumps to conclusions and says "Aha! Poor battery connections!" I really don't think it is.
Mike its nothing to do with trying to avoid it, I simply haven't been able to find any that fit properly, as I've said until I'm blue in the face. I've already spent money on two different styles of terminals recommended on here that IMHO are duds and are not suitable.Northern_Mike wrote:Why don't you replace them and see? It's the cheapest, easiest thing you could do, yet you persist in avoiding doing it. I don't understand..Mandrake wrote:Right, a bit more tinkering today.
Before anyone jumps to conclusions and says "Aha! Poor battery connections!" I really don't think it is.