engine lights on code p0171 p0174 p0465 2003 str great car lots of problems
car lag's under acceleration and pulls back over 2000rpm
spend 2000, 8 months ago on 2 new fuel pumps at jag dealer says codes on have nothing to do with the problem
thanks

 

what do the codes mean ?

 

Look here:
https://www.jaguarforums.com/forum/s...00-p1901-1116/

 

From memory first 2 codes are bank 1 and bank 2 running lean, (I think) the other code you'll have to look up. 1st thing I'd try is clean the maf

 

Chances are an air leak.

On an STR usually the air filter ir wrong size, badly fitted lid, cracked air tubing etc. Have a good hunt before damage to cats etc.

To check, read LTFTs with an OBD tool with live data such as an ELM327 (about $15). Read at idle & 2500rpm.

 

Welcome to the Forum.
Please take time to visit
New Member Area - Intro a MUST - Jaguar Forums - Jaguar Enthusiasts Forum
and introduce yourself so we can all say 'Hello'

 

the light came on about 6months ago after i took it for an oil change right after the jag dealer brought it out
then got stuck in 1st and shut it off and started car drove fine but the light is still there

 

Probably DIY fixable but never ignore the MIL as it'll only get more expensive.

 

i love the str i would also like to do some upgrades but im scared to touch anything untill this issue is fixed when i push past 2000 rpm sometime it pulls back and makes a grinding noise some people say its a vapor leak should i do a smoke test new plughs NEED HELP
thanks great forum love the posts

 

2003 stype r 180000km

 

You need to understand codes only say what the symptoms are not the cause 1 code can be caused many different things, take the first 2 codes, running lean both banks, you now have to work out what's causing it to run kean on both banks, running lean means more air than fuel in the mix, start with none cost diagnosis first, do es jagv8 suggests and look for airleaks first.

 

where do i buy an intake elbow i may have noticed a small crack
ive seen lots of intake pictures like mafioso intake etc but i cant find where to buy it

 

Fix faults before doing mods.

 

I'd tape it up really, really well, clear codes and see how it is.