Running Lean & Underpowerd

[steve 0]

Hi, guys n gals, ok I've been on here alot with this looked at lots of threads and still have a problem with the gal , the car is running lean (drinking fuel) underpowered at bottom end and as a slight chugging and loss of power when driving normaly, This is what as been replaced so far MAF, 02 SENSOR , THROTTLE BODY , SPEED SENSOR, TEMP SENDER, NEW EXHAUST SYSTEM AND CAT, PLUGS LEADS COILPACKS and I've removed/cleaned all vac pipes under bonnet EGR valves and air idler unit with the same problem it only does this when hot and then when you go to restart the car it will not start unless you keep the revs up for a coulpe of seconds then it will be ok . I have had the diog done and the code p1131 keeps coming up. Does anyone think I will need to remove the inlet to have a good look at it as this is the only thing i have'nt done yet or does the ecu need a reset or remap how can this be done?. Please Please Help this is driving me nuts now the car as only done 88500 miles...

 

 

 

Many Thanks Steve...

[seatkid]

Air leak at manifold?

 

Check brake vac pipe to manifold.

[steve 0]

Thankyou seatkid will check and put new one on today thanks again for the help :unsure:

[steve 0]

Ok this thing is a git looked at the mainfold it's new also looked at the brake one taken off cleaned it out same old problem , I'm going to have another diog done tomorrow....

[steve 0]

Ok had the gal put on the diog today and they found that the 02 sensor cable wasnt fitting in properly so I now have a galaxy that drive's like a dream, thanks to the guys for the help....

[seatkid]

p1131 is usually associated with the O2 sensor (aka lambda probe), showing too lean mixture.

 

However you said you changed the O2 sensor.

 

Whoever didnt fit the sensor (wiring) correctly should be responsible for any subsequent expenditure. If it was a garage, and they or you did any work after the sensor change, then I would be seeking compensation from them.