2003 Volvo XC90 engine overboost

Tiny
SGAPEN
  • MEMBER
  • 2003 VOLVO XC90
  • 6 CYL
  • AWD
  • AUTOMATIC
  • 100,000 MILES
I have a xc 90 with a code, po234 engine overboost,
how do I go about, fixing this?
Thursday, June 3rd, 2010 AT 12:47 PM

1 Reply

Tiny
JIS001
  • MECHANIC
  • 3,408 POSTS
Smoke test the intake system. You have a leak somewhere in the turbo system. Could be the plastic charge pipe hoses down to a split open vacuum hose that controls the turbos. You could also have a stuck closed turbo control valve or it can be plugged up also?
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Saturday, June 5th, 2010 AT 8:25 PM

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