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[arth]

Hi:

I have to replace this part of my motor, in the Opel Service they are charging me about 300 euros but I can get a cheaper one

This is the part



My car is 96 model 2.5td, but this picture is of 2001 model

Anybody can help with the location of it in the motor

Thanks

Arth

[Marks DTM Calib]

Given the age it may not have one! 

Pre 96/97 ish there was no MAF on the 2.5TD.

[arth]

Given the age it may not have one! 

Pre 96/97 ish there was no MAF on the 2.5TD.

That is what I thought, as it should be before the aire filter and it is not there

Arth

[aaronjb]

If you have a MAF it will be in the elbow shaped rubber pipe that comes out of the air filter housing and down to the turbo inlet (it's after the filter):



That car has no MAF.



That diagram shows the location of the MAF.


If you get an aftermarket part be sure it's really a genuine part - eBay specials are often nothing more than an empty box with a resistor in..

[Marks DTM Calib]

Given the age it may not have one! 

Pre 96/97 ish there was no MAF on the 2.5TD.

That is what I thought, as it should be before the aire filter and it is not there

Arth

It should be just after teh airfilter in the connection from the air filter housing to the turbo inlet.

I suspect you dont have one....

Any fault symptoms?

[MV6Danny]

If you have a MAF it will be in the elbow shaped rubber pipe that comes out of the air filter housing and down to the turbo inlet (it's after the filter):



That car has no MAF.



That diagram shows the location of the MAF.


If you get an aftermarket part be sure it's really a genuine part - eBay specials are often nothing more than an empty box with a resistor in..

Just out of curiosity what are all those extra copper pipes in that picture?

[aaronjb]

I have no idea I 'borrowed' the picture from Google images and didn't notice that until later.. I'm wondering if someone hasn't fitted a coolant powered fuel heater for veg oil maybe, but either way they're definitely non-standard! I'd run a mile if I opened the bonnet on a car and saw that

[arth]

Just came from OPEL service and confirmed me that there is no MAF in my car a s it is 96 model

Problem I face that now in summer with hot weather and clima working the car gets a little heavy driving and sometimes when I press the clutch to change gear the revolutions decrease so fast that the motor stops. Also when starting to run the car stalls quite often. It is not clutch problem

I guess the problem  are the 425.000 kilometers already done and the age, 17 year old car 

Recently I have done some service, I have cancelled the inmobilizer, repair the clima as there was a electronic problem and we had to make a new instalation, all the Car Ball Joint from the front wheels as I have to pass the MOT now, nearly 1.000 euro bill, more than the car value.

Hope to not to have more problems in couple of years.


Arth

[aaronjb]

In your place I'd start looking at the MAP sensor first - there's a small bore pipe running from the centre underside of the inlet manifold to a 2cm 'cube' on the drivers (assuming left hand drive) side suspension turret - make sure that isn't split and isn't full of oil residue.

Then it's probably also worth checking all of the vacuum piping to & from the EGR valve - there should be, at the very least, a small bore vacuum pipe from the vacuum gallery (runs down the centre of the inlet manifold from vac pump at front toward the rear where it connects off to the brake servo) to a solenoid valve very close to the aforementioned MAP sensor which will then run on (in another pipe) to the EGR valve. The solenoid may have two hose connections or three (with one going to a small filter) depending on year; my similar vintage car only had two, a later car had three.

If you're not sure which bit is which, post up a picture

Here's the ones I took when I had my TD..

Hose to MAP (hard to see but it goes to a nipple pointing straight down from the underside of the inlet manifold):


MAP sensor - note one single hose connection and single electrical connection:


EGR solenoid, note two hose connections and one electrical connection:

[arth]

In the second picture the red model, the EGR solenoid, is the vertical rubber piece??

The MAP sensor is just to take a faulty one and replace it with a good one, do we have to pass the computer on the motor??

Will it work a MAP sensor from a 99 98-99 model with my 96 model??

Thanks a lot.

Arth

[arth]

Some pics from that aerea of my car








At first sight I do not see anything wrong

Arth

[albitz]

I have no idea I 'borrowed' the picture from Google images and didn't notice that until later.. I'm wondering if someone hasn't fitted a coolant powered fuel heater for veg oil maybe, but either way they're definitely non-standard! I'd run a mile if I opened the bonnet on a car and saw that

 

[Marks DTM Calib]

On the feed to the MAP sensor, you need to check that the feed pipe is clear and not blocked and also check the drilling in the manifold is also clear. What you are seeing is an inability for the fuel pump to track load in a reasonable time and hence the symptoms. The MAP is a key input to the engine load calculation and hence the need to start here

For the EGR, blanking it off is a recommened approach

[aaronjb]

For the EGR, blanking it off is a recommened approach

Indeed - although I notice in arth's pictures that the EGR solenoid isn't (electrically) connected to anything, so perhaps that's already been done to the car..

[Marks DTM Calib]

I hope in the pic with the copper work under the bonnet that the owner is not a plumber by trade as the quality is bloody awful!