Login  |  Register
Nissanhelp.com - All About Nissan
Do-It-Yourself Maintenance Owners Manuals Recalls/Campaigns Service Bulletins Service Manuals Nissan OBDII Codes Glossary & Acronyms More...
Member's Ride Photos Stock Photo Gallery
Classifieds - For Sale Classifieds - Wanted To Buy Classifieds - Mechanic Wanted Classifieds - Auto Services Search Auto Parts
Register FAQ Social Groups Mark Forums Read
2008 Pathfinder Engine Whine Forums > > 2008 Pathfinder Engine Whine 2008 Pathfinder Engine Whine
Forgot Password? Join Us!


Pathfinder Nissan Pathfinder Discussion Forum

Reply
 
Thread Tools Display Modes
  #1  
Old 07-30-2018, 01:53 AM
rpdalton rpdalton is offline
Registered User
2008 Pathfinder
 
Join Date: Jul 2018
Posts: 3
Default 2008 Pathfinder Engine Whine

I did the famous transmission fluid in the coolant and vise versa transmission replacement over the weekend and was dismayed to find there is still a whine in the engine compartment. Further research took me to TSB on secondary timing chain replacement. Question is, is this critical or is the whine just an annoyance? After just dumping $3K and a full weekend into a transmission swap, I am not real thrilled about digging into it again.
Reply With Quote
  #2  
Old 07-30-2018, 02:07 AM
mpe235's Avatar
mpe235 mpe235 is offline
Moderator
2015 Rogue
 
Join Date: Jun 2006
Location: New York
Posts: 5,570
Default

Quote:
Originally Posted by rpdalton View Post
I did the famous transmission fluid in the coolant and vise versa transmission replacement over the weekend and was dismayed to find there is still a whine in the engine compartment. Further research took me to TSB on secondary timing chain replacement. Question is, is this critical or is the whine just an annoyance? After just dumping $3K and a full weekend into a transmission swap, I am not real thrilled about digging into it again.
I have seen a lot of 4.0L with that noise. I have never seen a chain completely fail on one. It is something that you can put off for a while. If you can do the repair yourself it doesn't cost too much. It's mostly labor.
Reply With Quote
  #3  
Old 08-07-2018, 10:15 AM
smj999smj's Avatar
smj999smj smj999smj is offline
Master Enthusiast
2006 Pathfinder
2003 Frontier King Cab
2003 Frontier KC SVE 4x4
 
Join Date: Jun 2012
Location: Prospect, VA
Posts: 1,849
Default

I've seen them fail and when the chain jumps, it bends valves; my recommendation is you don't put it off too long. The problem occurs because the tooling that was used to stamp the chain links wore and created sharp edges, which cut through the plastic tensioner faces. The amount of wear on the tooling, if any, when the links were stamped varies so that is why some engines don't experience the problem, some fail with little mileage (under 50,000 miles) and some can go well over 100,000 miles until the problem occurs. As the chain cuts into the plastic tensioner face, it will start to whine. Eventually, the chain will begin to ride directly across the hardened steel plunger of the tensioner, which can then lead to potentially causing the timing chain to jump and serious damage occurs. To do the "basic repair" as outlined in the TSB, one is usually looking in the $1200-$1600 range, depending on the shop's labor rate. Many will opt to add to the basic repair while everything is exposed, which increases the cost. This can include replacing the primary chain and tensioner, guides, water pump, thermostat, serpentine tensioner and belt. Those who want to eliminate another potential problem, which can cause low oil pressure issues, may address the rear timing cover, which can develop a leak at the cover plate gaskets at the back side of the rear timing cover.
Reply With Quote
Reply

Bookmarks

Tags
engine, pathfinder, whine

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -8. The time now is 12:25 PM.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, vBulletin Solutions Inc.
Search Engine Optimisation provided by DragonByte SEO v2.0.42 (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.