Hello everyone, I ve been a silent reader of the forum and for sure I was able to find tons of usefull information.
I become an active member because I need help.
I bought this Jaguar STR 2005 with almost 90 000 miles on it. Fully serviced untill 2011 at a Jaguar place. they replaced the tranny at 74000 miles for erratic gear changes.
Shortly after buying the car the check engine light came on.
I bought a scanner with life data and pulled the fuel rich codes.P0172/P0175.
I replaced airfilter, took off MAF sensor and cleaned it up with special spray.put it back on. light stayed off for a tank or so of fuel then came back on.
I decided to write down the life data and here I need your help
numbers are as follows:
idling
ST1-varies from -7 to 0
LT1- -3.6
ST2--3
LT2- -4
Fuel pressure 378 KPA
MAP-27
MAF- 5-6
TPS 8.2
o2S12 0.15
o2S22 0.1
driving between 1500 RPM to 2500RPM
ST1 +9 to -7
LT1 -20
ST2- -2
LT2 -14 to -20
Fuel pressure 375 KPA, MAP 48
ABS tps- 5 %
o2S1 0.13 to 0.09
O2S22 0.15
and a curios thing. when not in gear and accelerating to 2000-3000 RPM the MAF varies from 5-6 to 30-40 in metric measuring units.
when in gear and i pushed down, but the engine doesnt rev too much lets say goes from 1200 to 1600 the MAF goes in 3 digits to 120!!!
What this means? obviously when not in gear it s a big discrepancy!
Also when I scan the computer anomalies appear,like the oil light is on, the navigation screen shows: Comunication fault,contact your dealer.
All this weird messages go away when I take off the scanner, and turn the light off. Sometimes I need to disconnect the battery to come back to normal.
Please any input will be usefull.
Thank you

 

welcome to the forum, I have copied your issue into a new thread in the Stype/S Type R section for better visibility - see link below

https://www.jaguarforums.com/forum/s...issues-101779/

recommend adding vehicle details to your signature - use the User CP in the upper left to add signature - this will help technicians when trying to assist with issues

 

Welcome to the forum Valentin,

Good to have you here with us at Jaguar forums.

Sorry to hear about the issues with your STR. Follow Steve's link to the new thread he's started for you in S-Type section for help and advice from members with the same model.

Please remember to add vehicle details to your Signature to help others to give relevant advice. Go to the User CP button on the left of the top menu bar, then Settings & Options under Your Control Panel. Select Edit Signature and enter the details.

You can also visit the US Mid West Region section by following this link https://www.jaguarforums.com/forum/mid-west-us-il-ia-mi-mn-mo-oh-wi-39/ to find other members in your region.

Enjoy the forum.

Graham

 

Welcome to the forum Valentin,

Good to have you with us.
Enjoy the forum.

If you haven't done so already you should add your car details to your signature to help others to help you.

 

Hey there and welcome aboard....... good to have you here with us here at Jaguarforums

If you need any further help with the site, please just ask any moderator, veteran member and we'll be glad to assist.

In the meantime, any useful site information you may need such as how to post pictures, edit signatures, add videos, using the search facility etc, can be found here within the following link
Helpful_information

Please also take the time to check out the regional section for your area!
There are lots of members local to you with the same interests with info on local dealers and possible meets.
Regional - Jaguar Forums - Jaguar Enthusiasts Forum

I've manually upgraded you to Full forum access so you can better view the site and all its features
Please Jump on in and enjoy the site........

See you in the forums....

 

Welcome to the forum Valentin.

 

Welcome! *secret handshake* These are great cars if maintained. Sounds like you have an understanding of what makes them tic. Be sure to evaluate the battery. A lot of electrical issues disappear after replacing a suspect battery.

 

Hi Valentin

It’s great to have you as part of this awesome forum, and welcome from the Midwest Region.
Sorry to hear about your Jaguar problems, hopefully you will get it fixed soon.
Please check out the link in my signature, this will get you in touch with members that are local to you.
All the best to you.