Hello!
I have a 2003 Jaguar X-Type 2.5, was very excited when I bought it last 4th of July it only had 74k miles bought it from a Acura dealership. I use the metro a lot so I rarely drive it but this past December with 76k miles on it I decided to take it for a drive to work in the winter storm and the Check Engine light came on. Also, I got a Cruise Not Available message across my dashboard. I noticed that when I try to accelerate it stalls like I am stuck in 1st or 2nd gear. I decided to take it to AutoZone to have the codes scan and it came back with codes P0171 and P0174. Call the Acura Dealership and they said they couldn’t fix the car because it’s a Jaguar, I called a Jaguar and from them its sounds like it’s going to cost me a lot of money. Can someone please help me as to what the problem could be?

 

Those codes mean that the engine is running lean on both banks of cylinders. A common cause of this is a vacuum leak. I had that, and solved it by changing the IMT o-rings, PCV hose, and brake booster hose. The only one of these parts that is somewhat expensive is the brake booster hose, which is around $100; the others are quite cheap. There are other possible causes, but these are common. I never did figure out which was the culprit in my case, I just changed them all and the problem went away. It took me less than an hour to do the job, and I am slow!

 

I got these 2 codes too for a year and couldn't fix it until I found the problem shown on the picture. the leaking part of the brake booster hose was on the back side. the whole brake booster line looks so new that I neglected any possible defect of it before. Then I sealed it with 60 second epory glue and high temp tape. now it works well and those 2 codes are gone.

2003 jaguar x-type 2.5L

 

Thank you all for suggestions! I think I will just replace all three things (IMT O-rings, PCV Hose & Brake Booster) and see what happens. Also, this weekend I noticed that I filled my tank up to a ½ tank and drove about 100 miles and I swear to God my gas hand is on the red for empty, would this also be a cause because of the three things listed?

 

Can you elaborate or send any pics about the location of the PCV hose, and brake booster hose?

 

The Pcv hose is right when you open the hood of your jag take of the plastic part over the engine and its a small hose on top.

 

have you checked all these areas

you replaced the o rings below..what about the others







for the brake booster





one of theses plugs maybe disconected



if you have checked all these for vac leak

I have the same problem but Im going to fix it myself. Check my forum.

 

Thanks for the pics, I am sure these will be helpful for others as well

 

Thanks for the pics, I checked all but not those plugs. Where are them located ?

 

Sorry I dont know exactly. I pulled it from another forum thats talking about are problem but I lost it.

 

Hello,I'm having the same code errors on my 2003x-type, I tried to change the O rings.
I did manage to do so with the top one, but the one on the buttom i have a problem removal from the engine.. please advise on how to remove it
Thanks Chrys

 

Hello, how can I remove the bottom O ring housing?? It touches the engine and can't get out...
Thanks for your help

 

Hi everybody,

The floor carpet from the passenger side of my X-type is wet i noticed this and it is been going on for a while and dry out by itself but it comes back, It is coming from the buttom

Anyone had this problem? why it is wet? again passenger side floor, wet is coming from the buttom

 

I got it they are by the driver side

 

The bottom will not come out all the way, and that's ok. All you need to do is to cut the old yellow ring off. Then, gently stretch the new green ring around. It will stretch a little, just be careful and you'll be fine. I have done this, actually many of us on this forum have done this.

 

He is exactly right... That is how you get it on and off... Mine were already green but looked awful so i changed them anyway. Sounds better but not perfect. Im going to clean tb and maf today.. will post results.

 

What are the names of the O-Rings in the first pic so I can order them?

Also, I've found the upper O-Rings to order, but cant find the lower? What is their exact name?

Thanks!

 

I am not very mechanically minded, but I found this link which may help

Jaguar X Type Diagnostic codes

It seems to think that your fault is to do with the power train

 

To save you time you can only buy them from Jaguar and the part number is C2S40669...

 

http://www.motorcarsltd.com/C2S40669.html

Are these the ones that are shown in the first pic?

Thanks!