1997 lhs 3.5 p0306 - Chrysler Forum - Chrysler Enthusiast Forums

300M, Concorde, LHS, New Yorker Discuss the Chrysler LH platform cars within.

1997 lhs 3.5 p0306


Old 09-21-2018, 11:29 PM
Junior Member
Thread Starter
Join Date: Mar 2008
Posts: 4
Default 1997 lhs 3.5 p0306

As title say p0306 cyl 6 misfire. Only misses for about 15-20 secs and only after setting over night. But it will eventual turn on check engine light. 168,000 miles new plugs and Chrysler wires 6 months ago. Replaced number 6 plug and wire again. Ran wire over intake plenum. Have checked for vacuum leaks get no hint of a leak. Went so far as to plug off the brake vacuum line. Still a miss for a few seconds only on a stone cold start. Did a power clean on the injectors. That did keep the light off for about 3 week. After the initial start up miss it runs perfect. I am pretty much at a loss. Any ideas. If I do have to pull the plenum I will put in new injectors. I do have a new coil pack may try that. Any ideas
Reply With Quote
Old 09-22-2018, 07:21 AM
Senior Member
Join Date: Jul 2017
Location: Western NY
Posts: 632

Sounds like you have #6 cyl. leaking down overnight(not holding system pressure). That will partially flood that cyl. on initial start and the injector should be replaced.
Reply With Quote
Related Topics
Thread Starter
Last Post
Chrysler Voyager & Town & Country
04-27-2017 07:17 PM
Chrysler Voyager & Town & Country
07-05-2016 03:36 PM
Chrysler Pacifica
09-16-2015 08:06 PM
Forum Issues
11-29-2009 09:48 PM
New Member Area
02-09-2007 04:57 AM

Thread Tools
Search this Thread
Quick Reply: 1997 lhs 3.5 p0306

Featured Sponsors
Vendor Directory

Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.