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Old 03-18-2010, 11:41 AM   #7
Someclown
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2002 VUE 3.0L
Default Re: 02 V6 Misfire codes; need engine layout

Quote:
Originally Posted by yzracer14 View Post
I can't find the TSB for this recall issue but maybe someone who knows where its located can provide you with a link.
YZR, I found this in the archives, is this the one you mean ??
SNIP
(MIL) Service Engine Soon Telltale Illuminated With DTCs P0171 and/or P0174 (Retorque Intake Manifold Vacuum Chamber Bolts, Install Vacuum Chamber Springs) #02-06-01-016A - (Mar 24, 2003)
(MIL) SERVICE ENGINE SOON Telltale Illuminated With DTCs P0171 and/or P0174 (Retorque Intake Manifold Vacuum Chamber Bolts, Install Vacuum Chamber Springs)
2002-2003 Saturn VUE -- Built Up To and Including VIN Breakpoint 3S854417 with 3.0L, V6 Engine (VIN R -- RPO L81)
This bulletin is being revised due to a change in Parts Requirements. Please discard bulletin 02-T-28 (Corporate Bulletin Number 02-06-01-016 , Section 06 -- Engine).
Condition
Some customers may comment on the (MIL) SERVICE ENGINE SOON telltale being illuminated. (DTC(s) P0171 - Fuel Trim System Lean Bank 1 and/or DTC P0174 - Fuel Trim System Lean Bank 2 may be set and stored in the ECM memory.)
Cause
This condition may be caused by insufficient torque on the intake manifold vacuum chamber bolts. Under deceleration, enough vacuum can be created inside the intake manifold to lift the vacuum chamber off it's seal creating an intermittent vacuum leak.

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