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Jeep TSB #181599
1999 Jeep Grand Cherokee
TSB Document: - Sorry, the NHTSA has not posted this TSB document yet.
You can still get the detailed info from Jeep for this TSB. Call your local Jeep dealer's service department & ask for a copy of TSB# 181599.
Affected Component: ENGINE AND ENGINE COOLING:ENGINE:GASOLINE
- Summary
- SEVERAL REVISIONS HAVE BEEN MADE TO THE IDLE STRATEGY OF THE 4.7L ENGINE. ONE CHANGE IS TO THE UPSTREAM OXYGEN SENSOR (O2) BIASING / SWITCHING WHEN THE TRANSMISSION IS IN PARK OR NEUTRAL. *TT
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