K

Kai123

New Member
Hello everyone,

I've been looking on this sight for a week or so seeing if I can find an answer to my problems but as yet I'm just confusing myself so I was wondering if someone could give me nudge in the right direction.....

My problem is that I'm suffering from major power loss whilst traveling up hill,or even getting to 70mph full stop. I have read lots on the delaminating turbo pipes but short of driving with the bonnet off is there another way to test it? and if this is the problem as I seem to think it is, where is the best place for replacements? I'm really sorry if this is a repetitive subject its just i need a nudge towards what to change...

Thanks in advance

Kai
 
Check the pipe from the inlet manifold to the MAP sensor on the fuel filter housing is not perished or blocked. Common cause of low power. Really it needs to go on diagnostics as it may be in limp mode.
 
is it possible to be in limp mode with out an engine light on? please excuse my lack of knowledge (I guess I wont learn if I don't ask) and where is the plug for the diagnostics? again this is something i tried to research but i cant find it in either foot well?
 
Kai123 said:
is it possible to be in limp mode with out an engine light on? please excuse my lack of knowledge (I guess I wont learn if I don't ask) and where is the plug for the diagnostics? again this is something i tried to research but i cant find it in either foot well?
Click to expand...

R/H top of passenger footwell. Check the pressure pipe as Data says or your intank pump maybe on it's way home.
 
Kai123 said:
is it possible to be in limp mode with out an engine light on? please excuse my lack of knowledge (I guess I wont learn if I don't ask) and where is the plug for the diagnostics? again this is something i tried to research but i cant find it in either foot well?
Click to expand...

The most likely cause of lack of power is the MAP sensor pipe.
The OBD connector is in the passenger footwell next to the transmission tunnel just forward of the glove box hinge point. It won't help you as the P38 is not OBD compliant so standard OBD readers do not work. You need a Nanocom, Faultmate or Testbook to read the faults or look at live data to see if the MAP sensor is working.
You have not given much info about your car, what year is it, does it have EGR?
 
Kai123 said:
and where is the plug for the diagnostics?
Click to expand...

Trust me mate I remember it taking me a while to find it too! I was thoroughly bemused by the fact that my mate could reach under without looking and plug it in each time and I for the life of me couldn't find it! Felt a right wuss! Nowadays I just leave the bloody Hawkeye lead plugged in, I use it that often. :p
 
sorry Datatek, its a 1998 'R' 2.5 dse thats all I know I dont know what an EGR looks like? sorry :(

thank you wammers and rasheed ;)
 
Kai123 said:
sorry Datatek, its a 1998 'R' 2.5 dse thats all I know I dont know what an EGR looks like? sorry :(

thank you wammers and rasheed ;)
Click to expand...
EGR = exhaust Gas Recircultaion. If it has a plastic inlet manifold it has EGR, if it has an alloy manifold it does not have EGR unless the engine has been changed for one from an Omega. For your year I think it does not have EGR.

Download RAVE the LR workshop manual from the How To section at the top of the page, it give all the info you will ever need.
 
It definatley has a metal inlet manifold, but I cant seem to find this map sensor on the fuel pump I have two electrical connectors one held on by a cable tie :eek: and the other going to the pump? am i looking in the wrong place?
I will go and download that now

Thank you so much
 
Kai123 said:
It definatley has a metal inlet manifold, but I cant seem to find this map sensor on the fuel pump I have two electrical connectors one held on by a cable tie :eek: and the other going to the pump? am i looking in the wrong place?
I will go and download that now

Thank you so much
Click to expand...

I said fuel filter not pump. The primary pump is in the tank. Mid way along the underside of the inlet manifold you should find a rubber pipe with a woven protection coming off, this goes to the MAP sensor located on the fuel filter housing at the front. The MAP sensor also has wires coming from it. Fuel filter is a large metal lump hanging below the black plastic housing.
 
Datatek said:
EGR = exhaust Gas Recircultaion. If it has a plastic inlet manifold it has EGR, if it has an alloy manifold it does not have EGR unless the engine has been changed for one from an Omega. For your year I think it does not have EGR.

Download RAVE the LR workshop manual from the How To section at the top of the page, it give all the info you will ever need.
Click to expand...

Later 1998 models have EGR. July or August on. :):)
 
my apologies I read it wrong, I have this woven pipe in my hand but its not connected to anything on one side its connected to what I now assume is the map sensor, but then there is nothing on the other side?
 
Kai123 said:
my apologies I read it wrong, I have this woven pipe in my hand but its not connected to anything on one side its connected to what I now assume is the map sensor, but then there is nothing on the other side?
Click to expand...

That small braided hose should go from top of fuel filter to the Aluminium air intake about 3/4 along from underneath you can see it if you get a small mirror where it plugs into that is
 
Last edited:
IMG_1021.jpg" border="0" alt="map sensor 2


IMG_1020.jpg


sorry to be a pain but is this the map sensor i should be replacing? I'm certainly no mechanic but its the only thing with the woven wire tube thing

many thanks kai
 
Looks like it :)the other end should be connected to air manifold rub your fingers underneath you should feel a small short pipe sticking out for the hose to connect too the bit in photo plugs into the fuel filter housing
 
Last edited:
Kai123 said:
IMG_1021.jpg" border="0" alt="map sensor 2


IMG_1020.jpg


sorry to be a pain but is this the map sensor i should be replacing? I'm certainly no mechanic but its the only thing with the woven wire tube thing

many thanks kai
Click to expand...

That does indeed look like a MAP sensor but it should be bolted to the fuel filter and have a plug in it. Other end of pipe goes under manifold as described.
 
Fantastic thank you so much, for all your help..... I will replace this and let you know how get on, if its not this then I will replace the turbo hoses, thank you again every one :praise:
 
So after unplugging and cleaning the connections that were blue it works!!!! I'm so grateful for your help!!!! Thank you again so much
 
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