For the next guy who has this issue,

I got a cel, and pulled a map sensor circuit malfunction code. The car ran fine, so it seemed, but I did notice a 20 percent decrease in fuel economy. l looked at the stored data in my obdii reader to see that the map sensor showed 27.2 inhg, with no change due to rpms.

I looked for the map sensor to no avail, but came across a detached vaccuum line to the rear of the engine. It was fixed with a small clamp. There are a few electrical switches attached to the firewall, one of which has a nipple for a vaccuum line. I hooked the line up, and checked the reader data again. The cel reset, and life is good. I guess the switch the vaccuum line hooked up to might be the map sensor. I don't know and don't care......

 

Thanks John!

 

John, for future searches, can you post the actual DTC code you received? Glad it was an easy fix bud.

 

it was probably a P0105 which is exactly what i have going with the MAP sensor...i just had my octopus hose changed and i bet they forget to hook the vacumm hose back up...hope that fixes my issue too

 

the vacuum tube that is supposed to connect to the bottom of the MAP sensor was disconnected....i reconnected so my problem has been solved...see attached for pics of the infamous MAP sensor...

 

Hi
Your photo of MAP sensor looks like it is somewhere near and under the windshield wiper motor. Is the MAPS (Manifold Absolute Pressure Sensor) only on the XJ Supercharger models?

Jim Lombardi

 

yes the MAPS is located right by where the windshield wiper motor is...it is also only on supercharged cars...

 

I have been down this road recently and I think your photos are the Emissions Purge valve.

That Purge Valve has a vacuum line running to the Purge Solenoid that also connects to the Emissions Vapor hoses from the fuel tank cannisters and routes it to the intake.

My question is, how does a proper fuel injection system work without sensing the MAP unless it is phaked in the computer?

 

Is your car a non supercharged as I am not sure if the non sc have a map sensor...also in the pic where the square hole is around where the sensor mounts to

 

Also


see these pics ...the yellow wire is part of the connector to the map ...it is very hard to see but it’s there

 

I don't think anyone is hitting on my point, I'm looking for the map sensor location on a 06 Jaguar XJ8 Vanden plas. This is really frustrating, I'm getting everything except 06 Jaguar XJ8 Vanden plas

 

I don't think anyone is hitting on my point, I'm looking for the map sensor location on a 06 Jaguar XJ8 Vanden plas. This is really frustrating, I'm getting everything except 06 Jaguar XJ8 Vanden plas

 

If all else fails did you check the workshop manual?

 

Took me 2 minutes to find the info (Google). https://www.jaguarforums.com/forum/x...sensor-160742/

 

the 06 engine is different I'm getting every engine except a 06 Jaguar XJ8. I'm finding the rest of them in 2 minutes or less also, but not so much for the 06 xj8

 

You look to be in the wrong forum.

 

The pictures you see in this forum (for X308 Jags) are not relevant to your X350 engine. On X350, the MAP sensor is bolted to the intake manifold, at the back of it.

 

Yes yes and yes.. thank you so much

 

That's what has been posted in the correct forum, too.

 

Should my xjr AJ27sc have a map sensor ? I did have not connected vacuum hose hangin around but I dont' have sensor installed. There is only bolt holes where sensor bracket should bolt on. I do have an egr.