2000 V70 XC AWD Turbo Confusing problem.

aronkovacs · Post by **aronkovacs** » 23 Oct 2014, 20:02

Hi guys.

After months of worry free driving the car started acting up. The idle started going up and down, and died eventually. Will not stay on idle or on unless I press on the throttle. Codes are:
ECM-130A Intake air leakage (No vacuum hose leaks were found)
ECM-4801 TWC (3way cat. conv.) Efficiency
ECM-262A Long term fuel trim
ECM-261A Long term fuel trim
At first it threw a code for MAS, which was replaced, codes were erased, car ran fine for a week, and issues came back. Codes remained the same except the MAS code. My guess now is a clogged breather box, I heard it can cause similar issues, I'm not sure if the codes would be the same though.
Previous work: New fuel pump+filter, New Air filter, spark plugs, motor mounts, oil change etc. All the maintenance stuff.

Post by **jblackburn** » 24 Oct 2014, 09:05

Breather box will not cause this issue.

Did you check all turbo air hoses for tears or loose connections at the turbo/intercooler? Give everything a good wiggle test, including the air hose from the mass airflow sensor to the turbo itself (sometimes the PTC nipple connector will degrade and cause a massive air leak there)